Free online tools that run in your browser
What Mate.tools is
Mate.tools is a free library of 259 browser-based utilities for developers, creators, students and anyone with a small job to do: validating JSON, working out a profit margin, compressing a PDF, generating a favicon, converting a recipe measurement. They are grouped into 15 categories and available in 16 languages.
Some tools run entirely in your browser; others process what you enter on our server. Either way there is nothing to install, no account to create and no personal details to hand over. The site is free to use and is paid for by display advertising, which is how we keep every tool open to everyone.
Mate.tools is built and maintained by a small team of developers. You can read more about the project, check our privacy policy and terms of use, or get in touch. Building software? The same tools are available through our free JSON API and MCP server.
Popular tools right now
The most-used tools this month across all categories.
Website Image Extractor Use our Website Image Extractor to quickly retr… Interest calculator Use our Interest Calculator to determine intere… Fake Person Generator Generate realistic fake identities with our Fak… Regex tester Test and debug regex with our Regex Tester. Sup… Payment Due Date Calculator Use our Payment Due Date Calculator to find acc… Average calculator Quickly calculate the average of a set of numbe… IP Location Finder Find the exact location of any IP address with … Barcode Reader Use our online Barcode Reader to scan and decod…
Install Our Extensions
Add our tools to your favorite browser for quick access.
Browse by category
Development
18 Barcode Generator Cipher Encoder Decoder JWT Decoder HEX to RGB Converter Browser Language Detection Favicon Generator Sitemap URL Extractor Extract Title and Metadata from URLs Website Image Extractor Meta tags generator Markdown Editor JavaScript Obfuscator MD5/SHA Hash Generator XML validator Regex tester JavaScript beautifier Hyperlink HTML Generator JSON Validator & Formatter
Files
14Financial
25 Margin Calculator Tip Calculator Invoice Extractor Payment Due Date Calculator Break-Even Analysis Calculator ROI Calculator Price Markup Calculator Split bill calculator Credit card validator Paypal fee calculator Discount calculator Income tax calculator Compound interest calculator 401k Calculator Sales Tax calculator Currency calculator Amortization calculator Retirement calculator Payment calculator Investment calculator Savings calculator Auto loan calculator Mortgage calculator Interest calculator Loan calculator
Bra Size Calculator Water Intake Calculator Peptide calculator Creatine calculator Height calculator Menstrual period calculator Ovulation calculator Sleep cycle calculator Conception date calculator One Rep Max Calculator Calories Burned Calculator Pace calculator Ideal Weight Calculator Body Fat Calculator Calorie calculator BMI calculator BMR calculator
Images
32 AVIF Converter Color Name and Hex Finder Email Extractor Barcode Reader Watermark image Image compressor Placeholder Image Generator Image background removal Image Glow Effect Get color palette from photo Resize image Overlay images Censor photo (blur, pixelate) Turn Any Image Black & White Round corners on image Sharpen image Darken image Image color picker Image to text converter (OCR) Convert image to duotone Photo to Sketch Change image brightness Convert black & white Crop image Rotate image Colorize image Flip mirror image Pixelate effect image Merge two images Blur image Image splitter Invert colors image
Numbers
19 Number Line Generator pH Calculator Molar Mass Calculator Decimal to Fraction Converter Place Value Chart Multiplication Chart Aspect Ratio Calculator Percentage Increase Calculator Confidence interval calculator Probability calculator Average calculator Percentage calculator Binary converter Hexadecimal converter Roman numerals converter Number base converter Average of list Filter numbers Sort numbers
Audio to text converter Temperature Conversion Chart Shoe Size Converter Gauge Size Converter Paper Size Converter Pixel to Inch Converter Cooking Measurement Converter JSON to CSV Converter Excel to JSON Converter PNG to ICO Converter HEIC to JPG Converter WebP Converter CPM Calculator Click-Through Rate (CTR) Calculator Customer Lifetime Value Calculator CPA using CPM Calculator
Productivity
18 Classroom Seating Chart Maker Open multiple websites Quick Poll Creator Email Signature Generator Flashcard Maker Business Card Generator Employee Shift Scheduler Checklist Maker Invoice Generator Quick quote Generator Goal Progress Tracker Time Sheet Logger Pomodoro timer Online Notepad Grocery list builder Household Budget Calculator Weekly Meal Planner Chore Chart Maker
Randomness
12Social
5Text
25 Acrostic Poem Generator NATO Alphabet Translator Sight Words and Spelling Test Braille Translator Syllable Counter Morse Code Translator Lorem Ipsum Generator Text repeater Remove line breaks Text to slug Backwards text generator Compare Two Excel Spreadsheet Count lines Add text to multiple lines Duplicate line removal Remove Spaces Universal case converter Alphabetical order Text compare Uppercase and lowercase converter Word counter Sort list List randomizer Text reverse list Compare two lists
Utilities
20 Classroom Noise Meter Geography Quiz Ring Size Calculator Email Mailbox Checker Grade Calculator Password strength checker Metadata cleaner Online Measure ruler Secure password Generator Drag mouse test Reaction skills test Aim skills trainer Typing test Spacebar test CPS Test QR Code Reader/Generator Fancy Fonts - Copy & Paste Print screen Coin flipper What’s my screen size?
Disavow Domain Analysis What is my IP address? Bulk Website is Up or Down Checker Bulk Website Status Checker (200, 301..) Web performance analyzer Security headers checker Open Graph Debugger & Simulator Port checker Ping IP test Extract domains from text IP Location Finder VPN detection test URL bulk opener URL decoder SSL domain certificate checker Reverse IP Lookup DNS Lookup URL Redirect Checker
Frequently asked questions
Yes. Every tool on the site is free to use with no hidden limits, no paywalls, and no mandatory sign-up. We are supported by a small number of non-intrusive display ads, and by users who share the site with friends.
No. You can use any tool immediately without registering, providing an email address, or giving personal information. Anything you generate stays on your device.
Most tools process your data entirely in your browser using JavaScript - nothing is uploaded. A small number of tools that require server-side processing (for example, certain file format conversions) upload your input temporarily and delete it within minutes. Each tool page explains what happens to your data.
Yes. The site is fully responsive and every tool works on phones and tablets. For tools that involve heavy file processing, a desktop browser is faster, but everything functions on mobile.
Click the "Suggest a Tool" button in the sidebar, or email us via the contact page. We review every suggestion and typically add 2-4 new tools each month based on user requests.
No - the website works identically whether or not you install the extension. The extensions (Chrome, Edge, Firefox) simply add a quick-launch icon in your browser toolbar for faster access to the tools you use most.