Latest Tools

263 free tools across 19 categories.

Browse calculators, generators, converters, and utilities in the order they were added, newest first.

XML to JSON Convert XML to JSON and choose how attributes and repeated elements appear in the output. Online Teleprompter Read a scrolling script in your browser with adjustable speed, text size, mirror mode, keyboard pause and full-screen display. Morse Code Translator Translate text and Morse code, copy or download the result, and hear adjustable-speed Morse audio in your browser. Markdown to HTML Convert Markdown files or pasted text to sanitized HTML source, preview the result, and download a fragment or complete HTML document. Image to Base64 Encode local image bytes as Base64 or a data URL without recompression, with media-type detection and copy or download output. HTML to Markdown Convert pasted or uploaded HTML to Markdown with headings, lists, links, code blocks, tables and a safe local preview. Curtain Size and Fabric Calculator Estimate curtain-panel width and fabric yardage from rod width, fullness, finished length, and sewing allowances. CSV Compare Compare two local CSV files by row order or a unique key and download added, removed and changed cell records. Board Foot Calculator Calculate board feet for an editable lumber list with thickness, width, length, quantity and optional price per board foot. Binary Text Translator Translate UTF-8 text into eight-bit binary bytes or decode binary back to text with strict validation and copy or download controls. Asphalt Calculator Estimate asphalt tonnage and supplier cost for several paved areas, with thickness, density, and waste included. Wallpaper Calculator Estimate how many wallpaper rolls your walls need, including pattern repeats, trimming, and spare material. Subtitle Converter Convert SRT and VTT subtitle files, adjust timing, and download your finished file in your browser. Stud Calculator Estimate studs and plate lumber for your wall with adjustable spacing and extra-material allowances. PDF Booklet Maker Reorder PDF pages into folded-booklet spreads with blank-page padding, binding options, and a print-order preview. Paver Calculator Estimate patio pavers, whole packs, base and bedding sand volumes, and paver purchase cost. Image DPI Changer Set JPG or PNG print resolution (DPI) to 300 or a custom value without changing image pixels. Contact Sheet Generator Create printable photo contact sheets with filenames, ordered thumbnails, and multipage PDF downloads in your browser. Brick Calculator Estimate facing bricks from wall size, openings, actual brick dimensions, mortar joints, and waste. Board and Batten Calculator Plan a board-and-batten wall with even spacing, board counts, installation marks, and a scaled layout. Audio Joiner Join recordings in order, optionally add silent gaps, and download one MP3 or WAV file with local processing. Webcam Test Preview your webcam at its highest available quality, test common resolutions, and download a local snapshot. QR Code Reader Read a QR code from an image and review its decoded contents in your browser. PDF to Text Copy text from selected PDF pages or download it as a plain-text file. Microphone Test Test your microphone level and listen to a sample recording in your browser. Gamepad Tester See button presses, trigger values, and stick movement as you test your game controller. Dead Pixel Test Inspect your display for stuck or dead pixels using full-screen colors and a grid. Compare Two Lists Compare two lists to find matching, missing, and unique items, then copy or download the results. Combine Images Join images side by side or vertically, reorder them, match dimensions, and download a combined PNG or JPG locally. Audio to MP4 Converter Turn audio into an MP4 locally using a still image, animated waveform, or both without uploading your files. Extract Frames from Video Capture PNG still frames from a video at regular intervals locally and download them together as a ZIP. Rotate and Flip Video Rotate or mirror a video locally with compact controls and download a compatible MP4. Discord Video Compressor Compress a video toward Discord's upload limit with a safety buffer and no watermark. Resize Video Reduce video dimensions locally and download a broadly compatible MP4 with no upload or watermark. Video to GIF Converter Turn a short video segment into an animated GIF locally with simple time, width, and frame-rate controls. Mute Video Remove the audio track from a video locally and download a silent MP4 without uploading the source. Compress Audio Make audio files smaller as MP3, choose an output bitrate, and switch to mono for speech. WAV to MP3 Converter Convert a WAV recording to a smaller MP3 locally with clear bitrate choices and no upload. MP3 to WAV Converter Convert MP3 audio to WAV with adjustable sample-rate and channel settings. MP4 to MP3 Converter Extract an MP3 audio track from an MP4 video locally in your browser with selectable output quality. PDF to PNG Converter Convert selected PDF pages into PNG images in your browser at three resolutions. Unlock PDF Unlock a password-protected PDF when you know its password, right in your browser. Protect PDF Protect a PDF with an AES-256 password in your browser. Rotate PDF Rotate all or selected PDF pages without turning them into images. GIF to MP4 Converter Convert animated GIFs to MP4 videos right in your browser, with no upload. GIF Speed Changer Speed up or slow down an animated GIF while preserving its frames. GIF Cropper Crop animated GIFs in your browser with square, circular, or custom shapes; keep your files on your device. GIF Maker Create an animated GIF from images or a short video, adjust timing, and preview your result before downloading. GIF Resizer Resize every frame of an animated GIF to exact pixel dimensions in your browser. GIF Compressor Compress animated GIF files locally by reducing colors, dimensions, or frame count with a preview before download. Image Metadata Viewer View JPG, PNG, and WebP image details such as camera, date, GPS, and color-profile metadata. Pixelate Image Pixelate an entire photo or a percentage-defined region locally for privacy or style. Image Splitter Split one image into equal rows and columns for grids, tiles, or separate panels. Circle Crop Image Drag, position, and zoom an image into a circular crop with transparent PNG corners. Rotate and Flip Image Batch rotate sideways photos or flip JPG, PNG, and WebP images locally. Watermark Image Batch add diagonal, corner, centered, or tiled text watermarks to images in your browser. Image Metadata Remover Remove camera, GPS, and other common metadata from an image without changing the picture itself. JPG to WebP Converter Batch convert JPG and JPEG photos to WebP with adjustable lossy or lossless encoding. WebP to PNG Converter Batch convert static WebP images to lossless PNG while preserving transparency. SVG to PNG Converter Batch convert SVG files to PNG at a chosen width with transparent or white backgrounds. HEIC to JPG Converter Batch convert HEIC and HEIF iPhone photos to JPG or JPEG locally, with no upload. Pomodoro Timer Stay focused with customizable work and break cycles and a record of completed sessions. Countdown Timer Set a private browser countdown with presets, pause and resume controls, and a visible completion alert. Online Stopwatch Run a precise browser stopwatch with pause, resume, lap recording, keyboard controls, and CSV export. Reaction Time Test Measure five visual reaction trials with false-start handling, averages, and a local personal best. Click Speed Test Measure clicks per second over 1, 5, 10, 30, or 60 seconds with locally saved personal bests. Mouse Tester Test mouse buttons, scroll-wheel direction, double clicks, dragging, and pointer movement instantly in your browser. Keyboard Tester Test keyboard presses, releases, codes, modifiers, repeat events, and simultaneous keys locally. Typing Speed Test Measure typing speed, accuracy, and errors with a private one-, two-, or five-minute browser test. Barcode Generator Create Code 39, EAN-13, and UPC-A barcodes locally, then download SVG or PNG artwork. JavaScript Formatter & Minifier Format or minify JavaScript locally with parser-based tools for readable review and compact delivery. CSS Formatter & Minifier Format or conservatively minify CSS locally while preserving important license comments. HTML Formatter & Minifier Beautify or conservatively minify HTML locally for easier editing, review, and transfer. JSON to TypeScript Converter Infer a readable TypeScript interface from sample JSON locally, including nested objects, arrays, nulls, and unusual property names. Cron Expression Generator Build and understand standard cron schedules with checks for each field and timezone guidance. Markdown Preview Write Markdown and inspect a sanitized browser preview with GitHub-style tables, task lists, and code blocks. SQL Formatter Format or compact SQL locally with dialect and keyword-case controls for easier query review. XML Formatter & Validator Format, minify, and validate XML locally for readable SOAP, RSS, SVG, Android, and configuration files. YAML Formatter & Validator Format and validate YAML locally, choose indentation, or inspect the parsed data as JSON. Watermark PDF Add a centered text watermark to every PDF page locally with opacity and angle controls. Split PDF Divide a PDF into separate page-range documents locally and download them together as a ZIP. Remove PDF Metadata Clear a PDF's title, author, keywords, and other standard metadata in your browser. PDF to JPG Converter Render every PDF page as a numbered JPG image locally and download the complete set as a ZIP. Organize PDF Pages Reorder, remove, or duplicate PDF pages in your browser to create the sequence you want. Merge PDF Combine several PDF files into one document locally while preserving each source page. Free QR Code Generator Create QR codes for links, Wi-Fi, contact details, email, phone, SMS, or text, all in your browser. Extract PDF Pages Copy selected PDF pages into one new document locally using page numbers and ranges. Crop PDF Adjust the top, right, bottom, or left edges of PDF pages to fit your needs. Compress PDF Choose how to shrink a PDF: optimize the document or compress its pages as images, all in your browser. Add Page Numbers to PDF Place sequential page numbers on a PDF locally with starting number, position, and font-size controls. JSON Formatter & Validator Validate, format, and minify JSON locally while seeing useful syntax errors and the top-level data type. Base64 Encoder & Decoder Encode UTF-8 text as standard Base64 or decode Base64 back into UTF-8 text entirely in your browser. Regex Tester Test JavaScript regular expressions locally with flags, match positions, and captured groups. JWT Decoder Decode a JSON Web Token locally to inspect its header and payload claims. Unix Timestamp Converter Convert Unix timestamps in seconds or milliseconds into UTC, local time, and ISO 8601 dates. URL Encoder & Decoder Percent-encode or decode a URL component locally with UTF-8 handling and malformed-escape validation. CSV to JSON Converter Convert CSV with headers, quoted fields, escaped quotes, and selectable delimiters into JSON locally. JSON to CSV Converter Convert a JSON array of objects into CSV with unioned columns, quoting, and selectable delimiters locally. JSON Diff Checker Compare two JSON documents locally and see the exact paths that were added, removed, or changed. Number Base Converter Convert very large signed integers exactly between binary, octal, decimal, and hexadecimal. PNG to WebP Converter Convert a static PNG to a smaller WebP with transparency and adjustable quality. Favicon Generator Create favicon files in ICO and PNG formats, plus a web manifest and HTML code, from one image. Image Color Picker Pick a color from JPG, PNG, WebP, HEIC, or HEIF images and copy its HEX, RGB, or HSL code. JPG to PDF Converter Combine and reorder JPG images into a PDF locally with page size, scale, orientation, and margin controls. Crop Image Crop, zoom, and rotate JPG, PNG, WebP, HEIC, or HEIF images locally in your browser. JPG to PNG Converter Convert a JPG image to optimized PNG and optionally make a selected color transparent. PNG to JPG Converter Convert a PNG to JPG with selectable quality and transparency background, entirely in-browser. WebP to JPG Converter Convert a static WebP image to a compatible JPG locally in your browser. Image Compressor Compress JPG, PNG, and WebP files locally with quality, target-size, and dimension controls. Image Resizer Resize JPG, PNG, and WebP images by pixels or percentage in your browser. Security Header Checker Check pasted HTTP response headers for common browser security settings. Subnet Calculator Calculate an IPv4 network, mask, address range, and traditional host range from an address and CIDR prefix. Numbered List Maker Turn one item per line into a numbered list with a chosen start number and marker style. List Randomizer Shuffle a pasted list randomly while keeping every nonblank item. List Alphabetizer Alphabetize a pasted list in A–Z or Z–A order while preserving duplicates, spelling, capitalization, and original text. Batch Time Calculator Estimate elapsed processing time from batch count, minutes per batch, parallel capacity, and setup time. Room Layout Grid Calculator See how many identical items fit in a room and plan their spacing in a simple grid. Frequency Converter Convert frequency among hertz, kilohertz, megahertz, gigahertz, and revolutions per minute. Stair Calculator Divide a measured total rise into equal risers and estimate tread count and horizontal run. Sod Calculator Plan sod for a rectangular lawn with area, a waste allowance, and roll or piece counts. Printable Checklist Generator Turn your task list into a clean printable checklist in seconds. Event Capacity Calculator Estimate how many people a space can hold based on usable area, spacing, and any venue limit. Meeting Cost Calculator Estimate what a meeting costs in staff time, for one session or a recurring series. Post Hole Concrete Calculator Plan concrete for post holes with estimates for total volume and whole bags. Browser Viewport Tester Preview a custom CSS viewport to see how your page fits different screen sizes. Map Scale Calculator Turn map measurements into real-world distance in meters, kilometers, feet, or miles. Energy Converter Convert energy among joules, watt-hours, kilowatt-hours, BTU, calories, and related units. Power Converter Convert power values among watts, kilowatts, megawatts, horsepower, and British thermal units per hour. Fence Calculator Plan a straight fence run with estimates for sections, posts, rails, and pickets based on your spacing. Deck Board Calculator Estimate deck board rows, linear footage, and whole stock boards for a rectangular surface. Electricity Cost Calculator Estimate energy use and electricity cost from watts, quantity, run time, days, and price per kWh. Browser Feature Detector See which selected web features are available in your browser without permission prompts. Fraction Calculator Add, subtract, multiply, or divide fractions and get simplified answers with decimal equivalents. Fuel Economy Converter Convert fuel economy among US MPG, imperial MPG, liters per 100 km, and kilometers per liter. Unit Price Calculator Compare two package prices using cost per selected base unit. Data Transfer Time Calculator Estimate ideal data transfer duration from a data size, transfer rate, and overhead allowance. Data Storage Converter Convert data amounts among bits, bytes, decimal units, and binary IEC units. Credit Hours Calculator Add course credit hours to a completed total and see progress toward a target. Roofing Shingle Calculator Estimate roof area, roofing squares, and shingle bundles from plan dimensions and roof pitch. Rebar Calculator Estimate rebar lengths and stock bars for a rectangular grid with your chosen dimensions and spacing. Recipe Scaler Paste a plain-text ingredient list and adjust quantities for a new serving count. Cookie Support Checker Check the browser cookie setting and test a temporary first-party session cookie on this site. Proportion Calculator Find a missing value in two equivalent ratios and see how the calculation works. Cooking Measurement Converter Convert cooking measures like cups, tablespoons, milliliters, ounces, and grams, with separate volume and weight modes. Random Decimal Generator Generate random decimals within a range and choose how many places to include. Quiz Score Calculator Calculate a quiz percentage from correct and total questions with an optional passing threshold. Drywall Calculator Plan drywall for your wall: estimate board count, subtract openings, and include extra for cuts and waste. Speaking Time Calculator Convert words or pasted text to speaking time in minutes, include pauses, or calculate how many words fit your available time. Remove HTML Tags Tool Extract readable text from pasted HTML without carrying over its tags. Color Mixer Blend two colors and fine-tune the mix to create the shade you want. Color Palette Generator Build a coordinated five-color palette from a color you choose. Color Contrast Checker Check foreground and background colors against WCAG 2.2 text contrast thresholds. Color Format Converter Convert color values between HEX, RGB, and HSL in your browser. Fuel Cost Calculator Estimate trip fuel use and cost from distance, vehicle fuel economy, and fuel price. Browser Storage Inspector View this site's local and session storage keys without changing them. IP Address Information Tool Inspect and convert IPv4 values across dotted decimal, integer, hexadecimal, and binary formats offline. Rounding Calculator Round a decimal value to a chosen number of places with explicit direction rules. Speed Converter Convert speed among metric, US customary, and nautical units. Random Color Generator Generate a random color and copy its HEX, RGB, or HSL code. Study Time Calculator Turn a study-hour goal into a daily and per-session plan across the days you have. Mulch Calculator Estimate the mulch needed for a planting area, including total volume and bag count. Text Repeater Repeat plain text a chosen number of times with a practical separator. Remove Line Breaks Tool Remove line breaks and newlines from pasted text, preserving paragraphs or replacing each break with a space or custom separator. Split Bill Calculator Split a bill equally after adding a percentage tip and entered tax amount. Screen PPI Calculator Find your screen's pixel density (PPI) from its resolution and physical size. Checksum Calculator Generate and copy SHA-1, SHA-256, SHA-384, or SHA-512 checksums from text in your browser. Significant Figures Calculator Round a number to the number of significant figures you choose. Volume Converter Convert volume among metric, U.S. customary, and imperial units to find the measurement you need. Random Sequence Generator Generate a random sequence of whole numbers within a range, with an option to prevent repeats. Attendance Percentage Calculator Quickly calculate your attendance percentage and missed sessions from attended and total class sessions. Gravel Calculator Estimate gravel volume and weight for your area, adjusting for material density and waste. Slug Generator Turn any title or phrase into a clean lowercase URL slug for your website or blog. Word Frequency Counter See which words appear most often in your text and how frequently they occur. Meeting Time Overlap Calculator Find a meeting time that fits two availability windows across time zones. Random String Generator Generate custom random strings from the letters, numbers, and symbols you choose. Scientific Notation Calculator Convert numbers between decimal, scientific notation, E notation, and standard form. Area Converter Convert area among square meters, square feet, square yards, acres, hectares, and square inches. Random Team Generator Shuffle your list into balanced random teams; choose how many teams to make. Test Grade Calculator Get a test percentage, missed-answer count, and common letter grade from correct and total questions. Flooring Calculator Plan flooring purchases with room area, a waste allowance, and whole-package counts. Time Card Calculator Add clock-in and clock-out entries for split shifts, lunches, and breaks, then total worked time. Reading Time Calculator Find out how long a passage will take to read by pasting text or entering its word count. Text Diff Checker Compare two blocks of text line by line and review additions, removals, and unchanged lines locally. Aspect Ratio Calculator Simplify width and height into a ratio and scale one new width proportionally. UUID/GUID Generator Generate one or many random version 4 UUIDs, also commonly called GUIDs, locally in the browser. Prime Factorization Calculator Break a positive integer into prime factors and view exponential notation. Temperature Converter Convert temperatures among Celsius, Fahrenheit, and Kelvin with formula details. Coin Flipper Flip a virtual coin and keep track of heads, tails, totals, and streaks. Weighted Grade Calculator Combine category scores and percentage weights into one weighted course grade. Tile Calculator Estimate how many tiles to buy for an area, with an optional allowance for cuts and waste. Week Number Calculator Find a date's ISO week number, week-year, and Monday-to-Sunday date range. Find and Replace Tool Find every occurrence of text in a passage and replace it with your chosen wording. Line Sorter Sort pasted lines alphabetically or numerically while preserving duplicates when needed. Age in Days Calculator See the time between two dates in years, months, and days, plus the total day count. Passphrase Generator Create a random multi-word passphrase directly in your browser. Standard Deviation Calculator Calculate mean, population variance, and population or sample standard deviation from a number list. Weight Converter Convert weight and mass values among metric, imperial, and common everyday units. Dice Roller Roll common dice, add a modifier, and see each roll alongside the total. Final Grade Calculator Find the final-exam score needed to reach a target course grade. Paint Calculator Estimate gallons of paint for your walls using room dimensions, openings, coats, and coverage. Date Add/Subtract Calculator Add or subtract years, months, weeks, and days from a calendar date. Duplicate Line Remover Remove repeated lines from a list while preserving the first occurrence and original order. Whitespace Cleaner Clean repeated spaces, tabs, blank lines, and line-edge whitespace from pasted text. Password Entropy Calculator Estimate a password's entropy from its length and character choices. Length Converter Convert length among millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles. Random List Picker Pick one or more random items from your list without repeats. GPA Calculator Calculate semester GPA from your course credits and grade points. Concrete Calculator Estimate concrete volume in cubic yards and the number of premixed bags for a rectangular slab. Percentage Change Calculator Calculate percentage increase or decrease from an original value to a new value. Days Until Calculator Count calendar days and weekdays between today and a date you choose, with an option to include the target date. Business Day Calculator Find a future or past date by adding or subtracting weekdays. Case Converter Convert text to uppercase, lowercase, sentence case, title case, camelCase, snake_case, or kebab-case. Character Counter Count characters, characters without spaces, words, lines, and remaining characters for a custom limit. Decimal to Fraction Calculator Convert a terminating or repeating decimal to a reduced fraction and mixed number with calculation steps. Tip Calculator Calculate a tip, total bill, and per-person split with optional tax and rounding. Square Footage Calculator Calculate square footage for one or more rectangular areas, with optional material waste. Time Calculator Add or subtract hours and minutes, or find elapsed time between two clock times. Grade Calculator Calculate weighted or points-based course grades and find the score you need on a final exam. Random Number Generator Generate random whole numbers between your chosen limits, with an option to allow repeats. Unit Converter Quickly convert length, weight, temperature, volume, area, speed, and data-storage units. Date Difference Calculator Find calendar time, total days, weeks, and weekdays between two dates. Word Counter Count words, characters, sentences, paragraphs, lines, and estimated reading or speaking time. Age Calculator Calculate your age on any date, see days lived and birth weekday, and count down to your next birthday. Ratio Calculator Simplify two-part ratios and see the common factor for easy comparison. Median Calculator Find the median, count, minimum, and maximum for a list of numbers. Least Common Multiple Calculator Find the least common multiple of two or more positive whole numbers. Greatest Common Factor Calculator Find the greatest common factor of two or more whole numbers. Fraction Simplifier Reduce a fraction to lowest terms and see its greatest common factor. Average Calculator Calculate the average, sum, count, minimum, maximum, and range for a list of numbers. Discount Calculator Calculate your savings, sale price, sales tax, and final price after a percentage discount. What Is My Screen Size? Find your screen's width and height in pixels to check its resolution. What Is My User Agent? Show and copy your browser's user-agent string instantly, then learn what its browser, engine, and platform tokens mean. Division Calculator Divide numbers and see decimal, quotient, and remainder results. Multiplication Calculator Multiply two whole numbers, decimals, or negative numbers, view the calculation steps, and copy the product. Addition Calculator Add two numbers and see their sum. Subtraction Calculator Subtract one number from another to find the difference. Percentage Calculator Calculate a percentage, find what percent one number is of another, or compare percentage change. Password Strength Tester Check password strength in your browser and see how length and character choices affect the score. SHA-512 Hash Generator Generate a SHA-512 hash from text and get its 128-character result. SHA-384 Hash Generator Generate a SHA-384 hash from text and get its 96-character result. SHA-256 Hash Generator Generate a SHA-256 hash from text and get its 64-character result. SHA-224 Hash Generator Generate a SHA-224 hash from text and get its 56-character result. RIPEMD-160 Hash Generator Generate a RIPEMD-160 hash from text and get its 40-character result. HMAC-SHA-512 Hash Generator Generate an HMAC-SHA-512 hash from a message and secret key; get a 128-character result. HMAC-SHA-384 Hash Generator Generate an HMAC-SHA-384 hash from a message and secret key; get a 96-character result. HMAC-SHA-256 Hash Generator Generate a 64-character HMAC SHA256 value from a message and secret key locally in your browser, with a verified test example. HMAC-SHA-224 Hash Generator Generate an HMAC-SHA-224 hash from a message and secret key; get a 56-character result. HMAC-SHA-1 Hash Generator Generate an HMAC-SHA-1 hash from a message and secret key; get a 40-character result. HMAC-RIPEMD-160 Hash Generator Generate an HMAC-RIPEMD-160 hash from a message and secret key; get a 40-character result. HMAC-MD5 Hash Generator Generate an HMAC-MD5 hash from a message and secret key; get a 32-character result. SHA-1 Hash Generator Generate a SHA-1 hash from text and copy its 40-character result. MD5 Hash Generator Generate a 32-character MD5 hash from text and copy the result. PIN Code Generator Generate a random PIN with the length you choose. Password Generator Generate random passwords in your browser with configurable length and character sets, then review an estimated strength score. Most Popular Girl Names Browse the Social Security Administration's 2025 rankings of the 1,000 most popular girl names, with birth counts. Most Popular Boy Names Browse the Social Security Administration's 2025 rankings of the 1,000 most popular boy names, with birth counts. Most Popular Baby Names Browse 2025 U.S. Social Security Administration rankings for popular boy and girl names, with birth counts and exportable results. Last Name Generator Generate random last names for test data, character ideas, or baby-name inspiration. Girl Name Generator Explore random girl-name ideas for a new baby or generate names for sample data. Full Name Generator Generate random full names for sample records or character ideas, with an optional middle name or initial. First Name Generator Generate random first names for sample data, test records, or creative projects. Boy Name Generator Explore random boy-name ideas for a new baby or generate names for sample data. Baby Name Generator Discover baby-name ideas from the Social Security Administration's 2025 popular-name lists and export your results.