Useful tools. All in one place.
Browse our growing collection of fast, private online utilities. Every tool is engineered for clean inputs, in-browser execution, and zero unnecessary friction.
Live Working Utilities
These utilities are fully operational, executing locally in your browser with instant, high-performance data processing.
Name Combiner & Couple Name Generator
Free online name combiner, couple name generator, and ship name maker. Combine two names into cute couple blends, baby name combinations, and nicknames.
Word and Character Counter
Free online word counter and character count tool. Calculate words, characters with and without spaces, sentences, estimated pages, reading duration, and keyword density in real time.
Text Case Converter
Free online case converter. Transform text between UPPERCASE, lowercase, Title Case, Sentence case, Capitalized, camelCase, snake_case, and alternating meme case instantly.
Text Difference Checker
Compare two passages of text side-by-side with visual highlights of additions, deletions, and modifications.
Markdown Editor and HTML Previewer
Split-pane Markdown editor with real-time rendered HTML preview, GFM tables, formatting toolbar, and one-click exports.
Lorem Ipsum Generator
Generate customizable dummy placeholder text by paragraphs, sentences, words, or lists with classic Cicero Latin, German Blindtext, Business English, and HTML tags.
Clean URL Slug Generator
Transform article headlines, blog titles, and text strings into clean, SEO-friendly URL slugs with custom delimiters, stop words removal, and bulk multi-line support.
Line Sorter
Sort lines of text alphabetically, by length, or in reverse. Deduplicate repeated lines and remove empty rows.
Remove Whitespace Online
Clean trailing spaces, collapse multiple spaces into single spaces, remove empty lines, and convert tabs.
Text Reverser
Reverse text characters, word order, line sequence, or flip text upside down with one click.
Letter Frequency Counter
Analyze letter frequency, character distribution, Shannon entropy, Index of Coincidence, and bigrams in real time.
JSON Formatter and Validator
Format, validate, repair syntax errors, sort keys, and minify JSON with real-time structural telemetry.
Base64 Encoder Decoder Online
Encode plain text and binary files to Base64, decode Base64 strings, convert to Hex, and generate URL-safe tokens in real time.
HTTP Status Code Lookup
Searchable directory and troubleshooting guide for RFC 9110 HTTP status codes, headers, and reverse proxy errors.
URL Encoder Decoder Online
Encode and decode URLs, percent-encode query parameters under RFC 3986, and edit query strings with live parameter tables.
Cryptographic Hash Generator (SHA-256, MD5, HMAC & Checksum)
Generate SHA-256, MD5, SHA-512, SHA-384, and SHA-1 cryptographic hashes, compute HMAC digests, and verify zero-upload file checksums.
UUID & GUID Generator (v4, v7, v1 Bulk)
Generate cryptographically secure random RFC 4122 v4, time-ordered RFC 9562 v7, and v1 UUIDs in bulk. Format with hyphens, braces, quotes, or JSON, and inspect structure.
HTML Entity Encoder & Decoder (Named, Decimal, Hex)
Encode and decode HTML special characters into named entities, decimal character references, or hexadecimal codes. Prevent XSS and format code snippets with full HTML5 entity support.
JSON Web Token (JWT) Decoder
Decode and inspect JSON Web Token headers, payload claims, and expiration timestamps locally without sending secrets over the network.
Cron Expression Generator & Crontab Schedule Explainer
Translate 5-field and 6-field cron schedule expressions into plain English descriptions and preview upcoming execution times.
Linux Chmod Permissions Calculator
Calculate Linux file permissions in octal (755, 644) and symbolic notation (rwxr-xr-x) with interactive checkboxes.
Percentage Calculator
Calculate mathematical percentage changes, percentage increase or decrease, and fraction conversions with step-by-step formula explanations.
Date Difference and Duration Calculator
Calculate the exact number of days, weeks, months, years, and business days between any two calendar dates.
Unit Price Calculator & Cost Comparison Tool
Compare package sizes, quantities, and prices across different measurements to identify the true lowest cost per unit.
Loan Payment and Amortization Calculator
Calculate monthly loan payments, total interest paid, and the total cost of borrowing with amortization schedule math.
Tip and Bill Split Calculator
Calculate tip amounts, total bill totals, and split payments evenly among multiple people.
GPA and Grade Point Average Calculator
Calculate college and high school Grade Point Average (GPA) supporting variable credit hours and letter grade scales.
Unix Timestamp Converter
Convert between Unix epoch timestamps and human-readable dates with UTC and local timezone breakdown.
Data Storage and Bandwidth Converter
Convert between bits, bytes, KB, KiB, MB, MiB, GB, GiB, TB, and TiB with decimal SI and binary IEC units.
Color Code Converter (HEX, RGB, HSL, CMYK, OKLCH)
Convert color codes between HEX, RGB, HSL, and inspect WCAG accessibility contrast ratios.
Temperature Converter (Celsius, Fahrenheit, Kelvin)
Instant multi-way temperature conversion across Celsius, Fahrenheit, and Kelvin with mathematical formulas.
Number Base Converter (Binary, Hex, Decimal)
Convert numbers across Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16).
Aspect Ratio Calculator & Pixel Dimension Resizer
Calculate matching dimensions, simplify pixel ratios via Euclidean GCD, swap orientations, and generate copyable modern CSS and Tailwind aspect-ratio code.
SVG Optimizer, Minifier & Code Viewer Online
Clean, format, inspect, and optimize SVG vector markup with a synchronized real-time vector preview frame.
Image Color Picker and Palette Inspector
Upload an image locally in canvas, pick pixel colors with an interactive magnifier, and copy HEX or RGB codes.
Color Palette Generator & 12-Season Personal Color Analysis
Generate harmonious color palettes with Spacebar, lock swatches, test WCAG contrast, extract palettes from photos, and run 12-season personal color analysis diagnostics.
List Randomizer and Item Picker
Shuffle lists, pick raffle winners with podium badges, split balanced teams, evaluate weighted options, roll dice, and flip coins using cryptographic randomness.
Private Offline Scratchpad
Private in-browser multi-note scratchpad with automatic localStorage persistence, burner incognito mode, Markdown formatting snippets, and multi-format export.
IP Address, Geolocation, ASN & Whois Inspector
Inspect public and local IP addresses with zero-network RFC scope classification, binary/hex notation, reverse DNS PTR generation, and public geolocation.
Browser and User-Agent Inspector
Inspect current browser telemetry or parse custom User-Agent strings to identify browsers, rendering engines, operating systems, hardware concurrency, and search bots.
MAC Address Generator
Generate valid unicast or multicast IEEE 802 MAC addresses with vendor OUI presets, customizable delimiters, bitmask controls, and real-time OUI inspection.
SERP and Social Meta Previewer
Inspect and preview Google search snippets, Open Graph cards, and Twitter Cards with pixel-accurate layout constraints.
Global University Directory Lookup
Search thousands of universities worldwide with verified website domains and country filtering.
Currency Converter & ECB Multi-Currency Cross-Rate Matrix
Convert between major world currencies using open European Central Bank reference exchange rates.
Crypto Profit/Loss, Market Cap Scenario & Live Spot Price Calculator
Inspect live prices, 24-hour price changes, and market capitalization for major cryptocurrencies.
Body Mass Index (BMI) Calculator
Calculate Body Mass Index (BMI) for adults across metric and imperial units with WHO weight category evaluation.
Chronological Age and Milestone Calculator
Calculate exact age in years, months, weeks, days, hours, and seconds with next birthday countdown.
Discount and Sale Price Calculator
Calculate sale prices, percentage discounts, total dollar savings, and optional sales tax additions.
Compound Interest and Investment Calculator
Forecast investment growth with initial principal, recurring monthly contributions, and compounding intervals.
Daily Calorie and BMR Calculator
Calculate Basal Metabolic Rate (BMR) and daily calorie targets for weight maintenance, loss, or gain.
Fuel Cost and Trip Mileage Calculator
Calculate fuel consumption, total gas expense, and passenger cost splits for road trips and commutes.
Sales Tax and Reverse Tax Calculator
Calculate sales tax addition or reverse-calculate pre-tax amounts from total purchase receipts.
Strong Random Password Generator
Generate cryptographically strong, customizable passwords using native browser entropy with password strength evaluation.
Memorable Passphrase Generator
Generate secure, memorable multi-word passphrases based on Diceware principles and the EFF long wordlist.
Interactive QR Code Generator
Generate customizable QR codes for website URLs, Wi-Fi connections, plain text, and contact details with instant SVG and PNG export.
Online Stopwatch with Laps
Measure elapsed time with millisecond precision, record split laps, and track fastest and slowest intervals.
Random Number and Range Generator
Generate cryptographically random numbers across custom ranges with duplicate toggles and sorting options.
Binary Code Translator (Text to Binary)
Convert plain text to 8-bit binary code and decode binary streams back into readable English text.
Global Weather and Forecast Inspector
Query real-time weather conditions, temperature, humidity, wind velocity, and forecasts for any city worldwide.
English Dictionary and Phonetics Inspector
Lookup English word definitions, phonetic pronunciations, grammatical parts of speech, synonyms, and usage examples.
Country Profile and Demographics Inspector
Inspect country capitals, populations, currencies, languages, timezones, land borders, and national flags.
Postal Code and Geographic City Inspector
Lookup city names, state/province affiliations, and coordinates by postal code across international postal systems.
PDF Page Counter
Inspect page counts, page dimensions, paper sizes, and orientation of PDF documents locally.
PDF Metadata Viewer
Inspect PDF author, creator, producer, creation date, modification date, and PDF specification version.
PDF to Text & Markdown Extractor Online (100% In-Browser)
Convert PDF documents into formatted plain text or structured Markdown with heading detection.
PDF Watermark Previewer
Simulate watermark text, confidentiality stamps, rotation angles, and opacity on document layouts.
Image Resizer
Resize photographs and graphics by exact pixel dimensions or percentage ratios in your browser.
Image Cropper
Crop images to 1:1 avatars, 16:9 widescreen, 4:3 photos, or custom freeform crops with live preview.
Image Format Converter
Convert images between PNG, JPEG, WebP, and BMP formats directly in your browser with quality control.
SVG to PNG Converter
Convert SVG vector graphics into high-resolution transparent PNG bitmap images at custom scale factors.
Favicon Generator
Generate standard multi-resolution favicons, Apple touch icons, and Android app icons from any image.
Robots.txt Tester
Test robots.txt exclusion rules against specific user agents and URL paths using RFC 9309 standards.
XML Sitemap Validator
Validate sitemap XML schema compliance, inspect URLs, count links, and check lastmod timestamp formatting.
Canonical URL Checker
Normalize webpage URLs, strip marketing tracking parameters (UTM, gclid), and build canonical HTML link tags.
Open Graph Generator
Build and preview Open Graph and Twitter Card social preview meta tags with real-time card mockups.
Length Converter & Metric-Imperial Distance Matrix
Convert distance and length units across meters, kilometers, feet, inches, yards, and nautical miles.
Weight & Mass Converter (Grams, Pounds, Ounces, Stone)
Convert mass units between kilograms, grams, pounds, ounces, stones, metric tons, and troy ounces.
Speed & Velocity Converter (MPH, KM/H, Knots, M/S)
Convert velocity measurements across mph, km/h, knots, meters per second, and feet per second.
Area Converter & Square Footage Land Matrix
Convert surface area between square meters, square feet, acres, hectares, and square kilometers.
Volume & Liquid Capacity Converter (Gallons, Liters, Fl Oz)
Convert liquid volume across liters, milliliters, US gallons, UK gallons, fluid ounces, cups, and quarts.
Pressure Converter (PSI, Bar, Pascals, ATM, Torr)
Convert pressure units across PSI, bar, kilopascals, atmospheres, torrs, and millimeters of mercury.
Water Intake Calculator
Calculate personalized daily fluid and water needs based on body weight, activity duration, and climate.
Sleep Cycle Calculator
Calculate optimal bedtime and wakeup times based on natural 90-minute circadian sleep cycles.
Pregnancy Due Date Calculator
Estimate baby due date, gestational age in weeks and days, and trimester milestones using Naegele rule.
ROI Calculator
Calculate net profit, total ROI percentage, and annualized compound return (CAGR) on investments.
Simple Interest Calculator
Calculate simple interest, total repayment balance, and interest yield over any term.
Overtime Pay Calculator
Calculate gross earnings, 1.5x time-and-a-half overtime, and 2.0x double-time holiday wage pay.
Text Repeater
Repeat words, sentences, or multi-line text blocks with custom delimiters and optional line numbering.
Duplicate Word Finder
Find repetitive words, adjacent double words (the the), and word frequency density in your writing.
Word Scrambler
Scramble letters in words for anagram puzzles, vocabulary games, or typoglycemia reading demonstrations.
String Obfuscator
Obfuscate email addresses and phone numbers into HTML numeric entities to shield them from scrapers.
NATO Phonetic Alphabet Translator
Convert words, serial numbers, and license keys into NATO phonetic alphabet code words with pronunciations.
Regex Tester
Test JavaScript regular expressions in real time with syntax match highlighting and capture group tables.
cURL to Fetch Converter
Convert shell cURL terminal commands into modern JavaScript async/await fetch() code snippets.
SQL Formatter
Format, indent, and beautify SQL queries with consistent keyword capitalization across SQL dialects.
XML Formatter
Beautify, indent, or minify XML markup and SVG code with schema validation and tag hierarchy display.
HTML Table Generator
Design data tables in an interactive spreadsheet grid and export clean semantic HTML or Markdown tables.
Margin & Markup Calculator
Calculate gross profit margin percentage, markup percentage, cost of goods, and selling price in real time.
CAGR Calculator
Calculate compound annual growth rate (CAGR), absolute return, and projected growth trajectories.
Morse Code Translator
Translate text to Morse code and play authentic 700 Hz acoustic dits and dahs using the Web Audio API.
Pomodoro Timer & Focus Study Clock (Custom Intervals & Task Log)
Focused 25-minute Pomodoro countdown timer with custom intervals, completion chimes, and task log.
GitHub User Finder
Inspect public developer profiles, public repository counts, follower metrics, and account details in real time.
GitHub Repo Analyzer
Analyze public open source code repositories for star counts, fork activity, open issues, and primary languages.
DNS Lookup & Multi-Nameserver Propagation Checker (A, MX, TXT, CNAME, NS)
Resolve and audit DNS records including A, AAAA, MX, TXT, CNAME, and NS records with authoritative TTL values.
HTTP Headers Checker
Inspect HTTP response headers, security headers, content encodings, and server configurations for any URL.
Random User Generator
Generate realistic synthetic user personas with names, addresses, emails, phone numbers, and avatars for QA testing.
On This Day Historical Events Lookup
Explore historical milestones, notable births, and significant passings that took place on any calendar day.
Book ISBN Lookup
Inspect book titles, authors, publishers, publication dates, page counts, and citations using 10 or 13 digit ISBNs.
Country Border Lookup
Inspect international land borders, bordering sovereign nations, landlocked status, and territorial frontiers.
Astronomy Picture of the Day Viewer
Explore daily high-resolution space photography, deep sky captures, and astrophysicist annotations.
Space Launch Tracker
Track upcoming orbital rocket launches, payload missions, launch pad locations, and live countdown timers.
ZIP Code Distance Calculator
Calculate straight-line aerial distances and estimated driving mileage between any two 5-digit postal codes.
World Clock and Time Zone Meeting Planner
Inspect real-time local times, UTC offsets, daylight saving status, and working-hour overlaps across global cities.
Public Holiday Finder
Inspect annual statutory public holidays, bank closures, and national observances for over 100 countries.
Guess Age by Name Calculator
Predict statistical median age, generational cohorts (Gen Alpha to Boomers), and census demographics associated with any first name.
JPG to PDF Converter
Convert single or multiple JPG, JPEG, PNG, and WebP images into clean, professional PDF documents with custom paper sizes, margins, orientation, and zero file uploads.
Sunrise Sunset and Golden Hour Calculator
Calculate precise astronomical sunrise, sunset, civil twilight, and day length for any coordinates.
Air Quality Index and Smog Level Monitor
Inspect real-time Air Quality Index (AQI), PM2.5, PM10, ozone, and UV radiation levels worldwide.
Wikipedia Article Search and Summary Finder
Search, read structured summaries, and inspect encyclopedic facts directly from Wikipedia.
Recent Earthquakes and Seismic Activity Map
Track live global seismic events, earthquake magnitudes, focal depths, and epicenters from the USGS.
Foreign Exchange Rate Matrix Calculator
View multi-currency foreign exchange cross-rates and inverse conversion values published by the ECB.
Elevation and Altitude Coordinates Finder
Find the exact elevation and altitude above sea level for any geographic coordinate in meters and feet.
Marine Weather and Ocean Wave Height Checker
Inspect oceanic wave heights, swell periods, and wave directions for coastal and offshore coordinates.
World Bank GDP Comparison Calculator
Inspect historical Gross Domestic Product (GDP) records and macroeconomic statistics from the World Bank.
NPM Package Inspector and Version Analyzer
Inspect package versions, open-source licenses, dependency counts, and install commands from the npm registry.
CDN Script Library and CDNJS Package Finder
Search open-source web libraries and copy production-ready CDN script or link tags with one click.
GitLab Repository and Code Search Explorer
Search open-source projects, star ratings, and repositories hosted on the public GitLab platform.
Nutrition Facts, Macro & Nutri-Score Lookup
Inspect calories, macronutrients, and Nutri-Score grades by looking up product barcodes.
Search Poems by First Line
Browse and search complete classical poems, sonnets, and stanzas from public domain literature.
OpenStreetMap Coordinates Finder
Convert addresses, cities, and landmarks into exact latitude, longitude, and OpenStreetMap coordinates.
Cloudflare Trace Inspector
Inspect edge network routing, client IP address, data center colo codes, TLS version, and HTTP protocol metrics in real time.
HTTP Echo Console
Echo and inspect incoming client HTTP headers, connection attributes, origin IP address, and payload signatures.
Test Public DNS Servers
Query public DNS records including A, AAAA, MX, TXT, and NS records with live nameserver verification.
Synonym Finder
Discover exact synonyms, contextual alternatives, and semantic equivalents for words and expressions on demand.
Rhyme Finder
Find perfect phonetic rhymes, slant rhymes, and syllabic rhyming patterns for songwriting, poetry, and creative copywriting.
Antonym Finder
Lookup direct opposites, antonymic pairs, and contrast words to refine technical prose and clear vocabulary.
Word Association Finder
Explore semantic word associations, conceptual triggers, and related terminology for ideation and creative writing.
CoinGecko Crypto Market Comparator
Compare real-time spot rates, market valuation benchmarks, and 24-hour pricing shifts across leading blockchain assets.
DeFi TVL Tracker
Examine total value locked (TVL), liquidity metrics, and cross-chain protocol benchmarks across decentralized finance ecosystems.
CoinPaprika Altcoin Market Price Ticker
Monitor digital asset volume, circulating supply, all-time records, and market capitalization statistics in real time.
IP Whois Lookup
Query public autonomous system numbers (ASN), regional internet registries, ISP routing networks, and geographic IP origins.
Postal Code Regex Validator
Validate postal code regex patterns, formatting syntax, and alphanumeric structure by country for developers and forms.
Historical Weather Lookup
Query meteorological climate archives for historical temperatures, precipitation metrics, and atmospheric records for any location.
Time Zone Converter, World Clock & International Meeting Planner
Convert time across global IANA time zones, compute precise daylight saving offsets, and coordinate international meetings.
RSS to CSV & JSON Converter
Convert RSS and Atom feeds to CSV, Excel-ready spreadsheets, and JSON. Extract titles, URLs, dates, authors, and summaries directly in your browser.
Subtitle Time Shifter & Sync Adjuster
Shift and resync subtitle timestamps for SRT and VTT files. Add or subtract milliseconds or seconds with instant in-browser timestamp recalculation.
SRT to VTT & VTT to SRT Subtitle Converter
Convert SubRip (.srt) subtitles to WebVTT (.vtt) and vice versa. Clean styling tags, remove unwanted cue markers, and download ready-to-use caption files.
JSONL & NDJSON to CSV Converter
Convert newline-delimited JSON (JSONL / NDJSON) datasets and log files to structured CSV or standard JSON arrays locally in browser memory.
AI Web Scraper Blocker & robots.txt Generator
Generate custom robots.txt rules to block or manage AI scrapers, web crawlers, and LLM bots including GPTBot, ClaudeBot, PerplexityBot, and CCBot.
HAR to cURL Converter
Inspect HTTP Archive (HAR) files locally, sanitize authentication tokens and cookies, analyze network requests, and convert requests to cURL commands.
App Icon Resizer
Generate all required icon dimensions for iOS, iPadOS, watchOS, and Android from a single 1024x1024 image. Preview and download icon sets instantly.
Hreflang Tag Generator
Generate reciprocal hreflang tags for multi-language websites. Export HTML link elements and XML sitemap alternate urlset blocks with x-default annotations.
CSP Header Generator
Build and validate Content Security Policy (CSP) headers and meta tags. Configure directives for scripts, styles, frames, and images with trusted service presets.
Bulk WebP Converter Online
Batch convert WebP and AVIF images to PNG or JPEG format directly in your browser. Fast local canvas processing with zero file uploads or limits.
AdSense Eligibility Checker
Audit your website for Google AdSense approval eligibility. Checks content depth, mandatory legal pages, navigation structure, and ad policy compliance with a strict 100-point score.
Paycheck Bill Allocator & Bi-Weekly Budget Planner
Align recurring monthly bills with your bi-weekly or semi-monthly paychecks. Allocate expenses to paydays, calculate safe cash buffers, and prevent overdrafts.
Roommate Rent & Utility Splitter Calculator
Split apartment rent fairly based on bedroom square footage, private bathrooms, closets, balconies, and parking. Calculate objective rent division without disputes.
Google Search Console Regex Builder (Queries & URLs)
Generate valid, non-breaking RE2 regular expressions for Google Search Console filters. Build patterns for question queries, brand exclusions, long-tail terms, and intent.
Prorated Rent Calculator
Calculate partial month rent for mid-month move-ins or move-outs. Compare Actual Calendar Days, 30-Day Banker Rule, and Annual 365-Day formulas side by side.
DIM Weight Calculator (FedEx, UPS, DHL)
Calculate dimensional (DIM) weight across USPS, UPS, and FedEx. Detect 1,728 cubic inch surcharge thresholds and find the cheapest standard box sizes.
YouTube Chapter Generator
Convert DaVinci Resolve and Adobe Premiere Pro timeline marker exports into clean YouTube chapters. Strips frames, subtracts hour offsets, and inserts zero timestamps.
Freelance Hourly Rate & Day Rate Calculator
Calculate your true freelance hourly rate, day rate, and minimum project fee. Factors in unbillable admin time, self-employment taxes, insurance, and vacations.
Tile Waste Calculator (Square Feet & Overage)
Calculate tile, flooring, and grout requirements based on room size and layout patterns (Herringbone, Diagonal 45°, Offset, Grid). Rounds up to full carton boxes.
Party Drink & Wedding Alcohol Calculator
Estimate wine bottles, beer cases, liquor handles, mixers, and ice for weddings and parties. Generates an itemized shopping list ready for wholesale clubs.
Sourdough Bread Hydration & Levain Calculator
Calculate true total dough hydration by isolating the flour and water inside your sourdough starter. Scale recipes by loaf count and target dough weight in grams.
Timecard Calculator
Calculate daily and weekly work hours, subtract unpaid breaks, handle overnight shifts crossing midnight, and convert minutes into decimal hours for payroll.
Subnet Calculator
Interactive IPv4 subnet and CIDR mask calculator. Visualize 32-bit network and host binary boundaries, calculate usable IP ranges, broadcast addresses, and subnet masks.
TikTok, Reels & Shorts Safe Zone Checker & Overlay Template (1080×1920)
Test short-form vertical videos and image frames against TikTok, Instagram Reels, and YouTube Shorts UI overlays. Keep captions, titles, and faces in the safe area.
Concrete Calculator
Calculate concrete volume in cubic yards and cubic meters for rectangular slabs, circular patios, cylinders, post holes, sonotubes, and tube forms. Includes bag counts for 40 lb, 50 lb, 60 lb, and 80 lb bags, multi-section project builder, ready-mix truckload planning, clean mixing water estimator, transparent formulas, and itemized cost estimator with adjustable waste factors.
Paint Calculator
Estimate paint and primer requirements for rooms and walls with precise door and window cutout deductions. Calculate net square footage, gallons, and trim quarts.
Stripe & PayPal Fee Calculator
Calculate exact payment processor deductions and reverse invoice amounts for Stripe and PayPal. Determine how much to bill clients to receive your desired payout.
Schengen Visa 90/180 Calculator
Track short-stay travel days in the European Schengen area under the 90/180 day rolling rule. Prevent overstaying with visual calendar logs and countdown alerts.
Etsy Fee Calculator & Profit Estimator
Calculate real net profit, Etsy seller fees, transaction charges, and profit margins. Factor in listing fees, shipping costs, and optional offsite ads.
Electricity Cost & Appliance Energy Calculator
Calculate electricity costs per hour, day, month, and year for household appliances. Compare rated wattage, compressor duty cycles, regional utility tariffs, and total home energy bills.
Online Screen Ruler & Actual Size Calibrator
Free online screen ruler calibrated to actual size using a standard card or coin. Measure physical objects in millimeters, centimeters, and inches on phone or computer displays.
Rebar Grid, Slab Mesh & Concrete Footing Reinforcement Calculator
Calculate concrete slab volume in cubic yards and cubic meters with customizable waste allowance, pre-mixed bag counts, rebar reinforcement, sub-base gravel, and itemized project costs.
Gravel Calculator: Yards, Tons & Cost
Calculate gravel needed in cubic yards, cubic feet, tons, and bags for driveways, patios, walkways, and landscaping with customizable material density, waste margin, and costs.
Web Directory & Citation Opportunity Finder
Free online web directory and citation opportunity finder. Enter your website domain to generate a curated checklist of verified web directories, public WHOIS lookups, web archive captures, and SEO diagnostics.
Text to Handwriting Converter & Assignment Maker
Free online text to handwriting converter and homework assignment maker. Convert typed notes, essays, and letters into realistic handwritten pages with custom ink colors, ruled paper, and natural human variation.
Avatar Maker & Profile Picture Generator
Free online avatar maker and profile picture generator. Create custom vector SVGs, 8-bit pixel characters, identicons, and modern profile pictures for Discord, GitHub, and social media.
Mock Data Generator
Free online mock data generator and dummy test data maker. Create realistic user profiles, schemas, and records exported as JSON, CSV, or SQL INSERT queries.
Code to Image Converter
Free online code to image converter and aesthetic code snippet screenshot generator. Create beautiful, high-resolution code graphics with macOS window headers, custom gradients, and syntax themes.
Docker Run to Compose Converter
Convert docker run CLI commands into clean docker-compose.yml files and decompose Compose YAML back into docker run one-liners. 100% in-browser, bidirectional, and private.
EXIF Metadata Remover
Strip hidden EXIF metadata, GPS geotags, camera details, device serial numbers, and timestamps from photos before sharing online. 100% in-browser, private, and preserves full image quality.
Invoice Maker Online (Free PDF, No Sign-Up)
Free online invoice maker with instant PDF download. Zero sign-up, zero watermarks, and zero account registration required. Create professional commercial invoices with taxes, discounts, and custom logos.
Fertilizer Calculator & NPK Mixing Guide
Calculate fertilizer dilutions, lawn and garden spreader rates, greenhouse ppm fertigation, and custom NPK blends with precision element conversions.
X (Twitter) Shadowban Checker & Visibility Test
Free X (Twitter) shadowban checker and visibility diagnostic tool. Check observable public profile, search, and reply visibility signals and zero password required.
Drywall Calculator & Sheetrock Estimator
Calculate drywall sheets needed for walls and ceilings with customizable board sizes (4x8, 4x10, 4x12, 54-inch), door and window deductions, joint compound buckets, screws, tape, and project costs.
Calligraphy Alphabet A-Z: Styles & Practice Sheets
Explore calligraphy alphabets from A-Z in modern, gothic, copperplate, and cursive styles. Generate free printable 300 DPI tracing practice sheets with 55-degree slant guides and practice custom words or letters with zero signup.
Kaomoji Copy Paste: Japanese Emoticons for Discord, Instagram & TikTok
Browse and copy 10,000+ kaomoji Japanese text emoticons organized by mood, animal, and action. One-click copy for Discord, Instagram bios, TikTok, and WhatsApp. Includes a custom kaomoji generator, favorites system, and platform-specific guides.
Transformer Calculator: Turns Ratio, kVA & Wire Sizing
Calculate electrical power transformer parameters including turns ratio, line and phase voltages, kVA sizing, AWG wire gauge, 3-phase Dyn11 and Zigzag connections, core losses, and short-circuit fault currents in browser.
Conduit Fill Calculator: NEC Raceway & Wire Sizing
Calculate NEC conduit fill and allowable raceway capacity. Computes Chapter 9 Table 1 fill rules (53% for 1 wire, 31% for 2 wires, 40% for 3+ wires, and 60% for short nipples), Table 4 conduit areas (EMT, RMC, IMC, PVC Sch 40/80, FMC, LFMC, LFNC-B, ENT), Table 5 wire dimensions (THHN, XHHW, RHW, Compact Al, Bare Cu), Note 7 single wire rounding, and IEEE 1185 jam ratio hazard warnings with interactive SVG cross-section modeling.
Small Text Generator and Tiny Font Maker
Convert standard text into small capitals, superscript, subscript, inverted tiny text, and bubble characters. Copy tiny fonts for Discord nicknames, Instagram bios, and Twitter profiles instantly.
Twitch Bits to USD and Payout Calculator
Calculate Twitch Bits to USD cash values, streamer net earnings, and viewer purchase costs. Includes payout threshold progress, payment fee deductions, and currency conversions.
Podcast Name Generator and Show Finder
Generate catchy and unique podcast name ideas across 27 genres in multiple languages. Features Radio Test phonetic scoring, mobile title length guard, and availability verification.
JXL Converter Online and Image Encoder
Convert JPG, PNG, WebP, AVIF, and other image formats to genuine JPEG XL (.jxl) online. Adjust lossy quality or lossless compression with instant file size comparison.
Punch Needle Pattern Maker and Yarn Tool
Design custom punch needle embroidery patterns, calculate yarn yardage, preview 3D loop pile textures, match needle sizes, and export printable monk cloth transfer templates online.
XRechnung & ZUGFeRD XML Invoice Viewer
Inspect, validate, and visualize German electronic invoices in XRechnung and ZUGFeRD Factur-X XML formats with syntax checking, IBAN verification, and PDF extraction.
PDF Merger & Page Combiner Online (100% In-Browser)
Merge multiple PDF documents into a single organized file directly in your browser with zero server uploads, page reordering, and instant download.
Gerador e Validador de CPF e CNPJ (com Pontuação e Estados)
Generate and validate Brazilian CPF and CNPJ document numbers with optional formatting punctuation, state origins, and bulk export for software testing.
HEIC to JPG Converter Online (High Quality, 100% In-Browser)
Convert Apple iPhone HEIC and HEIF photos to standard JPG, PNG, or WebP images in your browser with zero quality loss and no server uploads.
Visor de Facturas CFDI 4.0 y 3.3 XML (SAT México)
Inspect, validate, and print Mexican SAT CFDI 4.0 and 3.3 XML electronic invoices with breakdown of taxes, line items, and digital stamps.
LLM GPU VRAM & Hardware Sizing Calculator (Llama 3, DeepSeek, MoE)
Calculate exact GPU VRAM requirements, KV cache scaling, and tokens-per-second hardware fit for open-weight LLMs across FP16, FP8, INT4, and GGUF quantizations.
Gerador de QR Code Pix e Copia e Cola (Estático e Dinâmico)
Generate official Banco Central do Brasil PIX QR Codes and Copia e Cola EMV payload strings with custom keys, amounts, merchant descriptions, and zero fees.
Bcrypt Hash Generator & Password Verifier (Custom Salt Rounds)
Generate cryptographically secure bcrypt password hashes with adjustable work factor cost and verify plaintext passwords against existing bcrypt hashes.
Mulch and Topsoil Coverage Calculator (Cubic Yards & Bags)
Calculate exact cubic yards, cubic feet, tons, and bag counts of mulch, topsoil, or compost needed for garden beds with custom depth and area geometry.
Simulador de Recibos Verdes Portugal (IRS, IVA e Segurança Social)
Simulate net income, IRS withholding, Social Security contributions, and VAT for Portuguese independent workers and freelancers under the simplified regime.
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