Latest Tools

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

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 locally toward a selected Discord upload size with a safety margin 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 Reduce an audio file by creating a lower-bitrate MP3 locally, with optional mono output 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 uncompressed PCM WAV locally with sample-rate and channel controls. 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 Render selected PDF pages as PNG images locally at three resolutions, with rasterization limitations explained. Unlock PDF Remove known-password PDF encryption locally for authorized use, with security limitations explained. Protect PDF Add local AES-256 password protection to a PDF, with recovery and access-control limitations explained. Rotate PDF Rotate all or selected PDF pages locally without rasterization, with signature limitations explained. GIF to MP4 Converter Convert an animated GIF to MP4 locally with a browser video encoder and clear compatibility limitations. GIF Speed Changer Speed up or slow down an animated GIF locally while preserving frames and explaining timing limitations. GIF Cropper Visually crop every frame of an animated GIF locally with freeform, square, circle, and precise coordinate controls. GIF Maker Make an animated GIF locally from images or a short video with timing controls and clear format limitations. GIF Resizer Resize every frame of an animated GIF to exact pixel dimensions locally, with clear output limitations. GIF Compressor Compress animated GIF files locally by reducing colors, dimensions, or frame count with a preview before download. Image Metadata Viewer View EXIF, GPS, camera, date, comment, XMP, IPTC, and color-profile metadata in JPG, PNG, and WebP images locally. 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 typical EXIF, GPS, camera, and embedded image metadata without re-encoding image pixels. 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 Run configurable focus and break cycles with local preferences and completed-session tracking. 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 Check mouse buttons, wheel direction, double-clicks, and pointer movement 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 explain standard five-field cron expressions locally with field-level range checks 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 standard PDF title, author, subject, keywords, creator, and producer fields locally. 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, omit, or duplicate PDF pages locally using an explicit page sequence. Merge PDF Combine several PDF files into one document locally while preserving each source page. Free QR Code Generator Create permanent static QR codes for links, Wi-Fi, contact details, email, phone, SMS, or text with private browser processing. Extract PDF Pages Copy selected PDF pages into one new document locally using page numbers and ranges. Crop PDF Adjust visible PDF page boundaries locally with independent top, right, bottom, and left margins. Compress PDF Reduce PDF file size locally with structural optimization or clearly labeled image-based compression. 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 compact JSON Web Token header and payload locally while keeping signature trust clearly separate. 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 valid JSON values structurally and list added, removed, and changed paths locally. Number Base Converter Convert signed integers among binary, octal, decimal, and hexadecimal without safe-integer rounding. PNG to WebP Converter Convert a static PNG to a smaller WebP with transparency and adjustable quality. Favicon Generator Generate favicon ICO, PNG sizes, a web manifest, and HTML links from one image locally. Image Color Picker Pick colors from a JPG, PNG, or WebP image and copy HEX, RGB, or HSL values. 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, or WebP 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 Review pasted HTTP response headers for common browser security-policy fields without fetching a URL. 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 one item per line with browser cryptographic randomness while preserving every nonblank entry. List Alphabetizer Sort one item per line alphabetically while preserving duplicates 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 Estimate how many equal rectangular items fit in a room grid with uniform gaps. 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 Estimate lawn area, waste-adjusted sod coverage, and whole rolls or pieces from a rectangular plan. Printable Checklist Generator Turn one item per line into a clean checklist ready for the browser print dialog. Event Capacity Calculator Estimate a planning capacity from usable area, space per person, reserved people, and an optional venue cap. Meeting Cost Calculator Estimate labor cost for one meeting or a recurring series from attendee time. Post Hole Concrete Calculator Estimate concrete volume and whole bags for equal round post holes. Browser Viewport Tester Inspect the current CSS viewport and preview a custom viewport size inside the page. Map Scale Calculator Convert a map measurement into ground distance using a representative-fraction scale. Energy Converter Convert energy among joules, watt-hours, kilowatt-hours, BTU, calories, and related units. Power Converter Convert power among watts, kilowatts, megawatts, mechanical horsepower, and BTU per hour. Fence Calculator Estimate sections, posts, rails, and pickets for one straight fence run. 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 Check whether this browser exposes selected web platform features without requesting permissions. Fraction Calculator Add, subtract, multiply, or divide two fractions and simplify the exact result. 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 line length and stock bars for a rectangular grid using your chosen spacing. Recipe Scaler Scale leading decimal or fraction quantities in a plain-text ingredient list by serving count. Cookie Support Checker Check the browser cookie setting and test a temporary first-party session cookie on this site. Proportion Calculator Solve one missing value in an equality of two ratios and show the cross-products. Cooking Measurement Converter Convert common cooking volume or weight measurements without guessing ingredient density. Random Decimal Generator Generate random fixed-place decimals on an inclusive range using Web Crypto. Quiz Score Calculator Calculate a quiz percentage from correct and total questions with an optional passing threshold. Drywall Calculator Estimate whole drywall boards for one rectangular wall with openings and extra allowance. Speaking Time Calculator Estimate speaking time from a script's word count and an editable words-per-minute rate. Remove HTML Tags Tool Turn pasted HTML into readable plain text without executing its markup. Color Mixer Mix two opaque sRGB colors by interpolating their 8-bit RGB channels at an adjustable percentage. Color Palette Generator Build a five-color sRGB palette from one base color and a selected color-wheel relationship. Color Contrast Checker Check two opaque sRGB colors against WCAG 2.2 text contrast thresholds. Color Format Converter Convert one opaque sRGB color among HEX, RGB, and HSL formats in your browser. Fuel Cost Calculator Estimate trip fuel volume and cost with US MPG or metric L/100 km inputs. Browser Storage Inspector Inspect localStorage and sessionStorage keys visible to this site 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 one random sRGB color and copy its HEX, RGB, or HSL value. Study Time Calculator Divide a target number of study hours across available days and sessions. Mulch Calculator Estimate mulch volume and bag count for one rectangular planting area. Text Repeater Repeat plain text a chosen number of times with a practical separator. Remove Line Breaks Tool Replace line breaks in pasted text with spaces, nothing, or a custom separator. Split Bill Calculator Split a bill equally after adding a percentage tip and entered tax amount. Screen PPI Calculator Calculate screen pixel density from entered resolution and physical diagonal size. Checksum Calculator Compute SHA checksums for UTF-8 text locally with Web Crypto. Significant Figures Calculator Round a finite decimal value to a selected number of significant figures. Volume Converter Convert known volumes among metric, US customary, and imperial units. Random Sequence Generator Generate a bounded random integer sequence with Web Crypto and optional uniqueness. Attendance Percentage Calculator Calculate attendance percentage and missed sessions from equal-weight session counts. Gravel Calculator Estimate rectangular gravel volume and weight with editable density and waste assumptions. Slug Generator Turn a title or phrase into a clean lowercase URL slug in your browser. Word Frequency Counter Count and rank repeated words in pasted text with clear normalization controls. Meeting Time Overlap Calculator Find overlap between two same-day availability windows using named, date-aware time zones. Random String Generator Generate a random string from selected character sets using Web Crypto in the browser. Scientific Notation Calculator Convert decimal or scientific notation into normalized scientific, E, and standard forms. Area Converter Convert area among square meters, square feet, square yards, acres, hectares, and square inches. Random Team Generator Shuffle a list locally and divide people into balanced random teams. Test Grade Calculator Convert correct answers and total questions into a percentage and common letter grade. Flooring Calculator Estimate rectangular floor area, waste allowance, and whole flooring packages needed. Time Card Calculator Add clock-in and clock-out entries for split shifts, lunches, and breaks, then total worked time. Reading Time Calculator Estimate reading time from a pasted word count and an adjustable reading speed. 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 one or many virtual coins and review heads, tails, totals, and streaks. Weighted Grade Calculator Combine category scores and percentage weights into one weighted course grade. Tile Calculator Estimate rectangular tiles needed for an area, including a configurable waste allowance. Week Number Calculator Find the ISO week number, week-year, and Monday-through-Sunday range for a date. Find and Replace Tool Find text in pasted content and replace every matching occurrence with clear controls. Line Sorter Sort pasted lines alphabetically or numerically while preserving duplicates when needed. Age in Days Calculator Calculate elapsed calendar days and a calendar-age breakdown between two dates. Passphrase Generator Generate random multi-word passphrases locally and review practical security limitations. 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 polyhedral dice, add a modifier, review each result, and understand the tool's limitations. Final Grade Calculator Find the final-exam score needed to reach a target course grade. Paint Calculator Estimate wall paint gallons from room dimensions, openings, coats, and paint 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 theoretical password entropy from length and character-set assumptions. Length Converter Convert length among millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles. Random List Picker Choose one or more random entries from your own list without replacement. GPA Calculator Calculate a semester GPA from course credits and grade points using a configurable course table. 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 until a future or past date with optional inclusive counting. Business Day Calculator Add or subtract weekdays from a date and review the resulting business date. 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 a weighted or points-based course grade and find the score needed on a final exam. Random Number Generator Generate one or more random integers in a custom range, with or without duplicates. Unit Converter Convert length, mass, temperature, volume, area, speed, and digital 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 exact age on any date, total days lived, birth weekday, and time until the next birthday. Ratio Calculator Simplify a two-part whole-number ratio and see its common factor. 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? This tool shows your screen size / resolution. The screen size is the measurement of the screen width and height in pixels. What Is My User Agent? This tool shows your user agent. A browser's User Agent string is a description of the browser and operating system being used. Division Calculator The division calculator finds the quotient and remainder by dividing two numbers together. The division calculator outputs the answers in both decimal format and quotient with remainder format. Division involves breaking down or dividing a larger number into smaller groups. Multiplication Calculator The multiplication calculator finds the product by multiplying two numbers together. Multiplication is an arithmetic operation that involves the repeated addition of the same number. Addition Calculator The addition calculator finds the sum of two numbers by adding one number to another. Addition is an arithmetic operation that involves combining or adding things together. Subtraction Calculator The subtraction calculator finds the difference between two numbers by subtracting one number from another. Subtraction is an arithmetic operation that involves taking something away from a group of things. Percentage Calculator This tool offers several different percentage calculators: 1. What is p% of x? e.g. What is 10% of 100? 2. x is what percent of y? e.g. 10 is what percent of y? 3. What is the percentage increase or decrease from x to y? e.g. What is the percentage increase or decrease from 50 to 100? Password Strength Tester This Password Strength Tester tests the strength of your password. The password strength tester also analyzes your password to determine if it contains numbers, lowercase, uppercase, symbols, and the recommended minimum length. SHA-512 Hash Generator This tool generates the SHA512 hash of a given text. SHA-512 is a cryptographic hash function which takes an input text and generates a 512-bit hash value which is 128 characters in length. SHA-384 Hash Generator This tool generates the SHA384 hash of a given text. SHA-384 is a cryptographic hash function which takes an input text and generates a 384-bit hash value which is 96 characters in length. SHA-256 Hash Generator This tool generates the SHA256 hash of a given text. SHA-256 is a cryptographic hash function which takes an input text and generates a 256-bit hash value which is 64 characters in length. SHA-224 Hash Generator This tool generates the SHA224 hash of a given text. SHA-224 is a cryptographic hash function which takes an input text and generates a 224-bit hash value which is 56 characters in length. RIPEMD-160 Hash Generator This tool generates the RIPEMD-160 hash of a given text. RIPEMD-160 is a cryptographic hash function which takes an input text and generates a 160-bit hash value which is 40 characters in length. HMAC-SHA-512 Hash Generator This tool generates the HMAC-SHA-512 hash of a given message and secret key. HMAC-SHA-512 is a cryptographic hash function which takes an input text and secret key and generates a 512-bit hash value which is 128 characters in length. HMAC-SHA-384 Hash Generator This tool generates the HMAC-SHA-384 hash of a given message and secret key. HMAC-SHA-384 is a cryptographic hash function which takes an input text and secret key and generates a 384-bit hash value which is 96 characters in length. HMAC-SHA-256 Hash Generator This tool generates the HMAC-SHA-256 hash of a given message and secret key. HMAC-SHA-256 is a cryptographic hash function which takes an input text and secret key and generates a 256-bit hash value which is 64 characters in length. HMAC-SHA-224 Hash Generator This tool generates the HMAC-SHA-224 hash of a given message and secret key. HMAC-SHA-224 is a cryptographic hash function which takes an input text and secret key and generates a 224-bit hash value which is 56 characters in length. HMAC-SHA-1 Hash Generator This tool generates the HMAC-SHA-1 hash of a given message and secret key. HMAC-SHA-1 is a cryptographic hash function which takes an input text and secret key and generates a 160-bit hash value which is 40 characters in length. HMAC-RIPEMD-160 Hash Generator This tool generates the HMAC-RIPEMD-160 hash of a given message and secret key. HMAC-RIPEMD-160 is a cryptographic hash function which takes an input text and secret key and generates a 160-bit hash value which is 40 characters in length. HMAC-MD5 Hash Generator This tool generates the HMAC-MD5 hash of a given message and secret key. HMAC-MD5 is a cryptographic hash function which takes an input text and secret key and generates a 128-bit hash value which is 32 characters in length. SHA-1 Hash Generator This tool generates the SHA-1 hash of a given text. SHA-1 is a cryptographic hash function which takes an input text and generates a 160-bit hash value which is 40 characters in length. MD5 Hash Generator This tool generates the MD5 hash of a given text. MD5 is a cryptographic hash function which takes an input text and generates a 128-bit hash value which is 32 characters in length. PIN Code Generator The PIN Code Generator generates a PIN code, also known as a Personal Identification Number. By default, it generates 4 digit PIN codes but you can specify the desired length. Password Generator Generate random passwords in your browser with configurable length and character sets, then review an estimated strength score. Most Popular Girl Names This tool lists the most popular girl names in a searchable and sortable table. This tool is useful if you or someone you know is expecting a baby and would like to see what are the most popular baby girl names. Most Popular Boy Names This tool lists the most popular boy names in a searchable and sortable table. This tool is useful if you or someone you know is expecting a baby and would like to see what are the most popular baby boy names. Most Popular Baby Names This tool lists the most popular baby names in a searchable and sortable table. This tool is useful if you or someone you know is expecting a baby and would like to see what are the most popular baby names. Last Name Generator The Last Name Generator generates random last names. This tool is useful if you need to generate random last names for test data. It can also be useful to be inspired by interesting baby middle names if you are expecting a baby. Girl Name Generator The Girl Name Generator generates random girl names. This tool is useful if you or someone you know is expecting a baby or if you need to generate random names for test data. Full Name Generator The Full Name Generator generates random full names that include a first, a last name, and an optional middle name or middle initial. This tool is useful if you need to generate random full names for test data or are trying to come up with a baby name. First Name Generator The First Name Generator generates random first names. This tool is useful if you need to generate random first names for test data. Boy Name Generator The Boy Name Generator generates random boy names. This tool is useful if you or someone you know is expecting a baby or if you need to generate random names for test data. Baby Name Generator The Baby Name Generator generates random baby names. This tool is useful if you or someone you know is expecting a baby or if you need to generate random names for test data.