Free Online Tools & Utilities
Professional-grade tools, completely free to use. No registration or downloads required.
API Tester
Free online API tester - Test REST APIs with GET, POST, PUT, DELETE, PATCH methods. No registration Postman alternative for developers.
Archive Tool (ZIP/TAR)
Compress files into ZIP/TAR/TAR.GZ/TAR.XZ and extract archives directly in your browser. Supports drag-and-drop, folder packaging (webkitdirectory).
Audio Editor
Edit audio locally in your browser with waveform + spectrum views, selection editing (trim/cut/copy/paste), normalize/amplify/fade, real-time effects.
Barcode Generator & Labels
Generate Code128/EAN-13/UPC-A barcodes and arrange them on printable label sheets. Customize columns, cell size and gaps (mm) and print directly from your.
Base64 Converter
Encode/decode Base64 for text, images, and files in your browser. Includes Data URI generation and Base64-to-file download. File tab supports up to 10MB.
Batch Image Watermark
Free online add text or logo watermarks to multiple images locally in your browser. Position, size, opacity, and tiling. Works offline.
Batch String Operations
Apply transformations to lists of lines: trim, case, replace (regex), add prefix/suffix, sort, dedupe, filter, numbering.
Bingo Card & Raffle Ticket Generator
Create unique bingo cards and numbered raffle tickets with serials, auto layout, cut marks and printable sheets โ all offline, easy and free.
Binomial Distribution
Free online Binomial Distribution Calculator. Compute Probability Mass Function (PMF), Cumulative Distribution Function (CDF), and quantiles.
BMI Calculator
Free online BMI Calculator. Calculate your Body Mass Index instantly to assess your weight status. Get personalized calorie recommendations. Private and secure.
Body Health Calculator
Calculate and understand BMI, BMR, body fat percentage, waist-to-hip ratio, and other body composition metrics with detailed explanations โ.
Breathing Exercise
Simple guided breathing exercises for relaxation and stress relief. Follow the visual guide to breathe in, hold, and breathe out.
Buffer Preparation Calculator
Free online Buffer Preparation Calculator. Design chemical buffers using the HendersonโHasselbalch equation. Estimate component masses. Works offline.
Click Speed Test (CPS)
Test how fast you can click in 5, 10, or 30 seconds. Challenge your friends and check your CPS (Clicks Per Second). Track your history and improve your speed.
Color Toolbox
Complete color toolkit - HEX/RGB/HSL converter, color palette generator, contrast checker, and color blindness simulator. Easy and free online color tools.
Common Math Functions
Free online Common Math Functions calculator. Compute factorials, permutations (nPr), combinations (nCr), GCD, LCM, and perform prime number tests.
Compound Interest Calculator
Free online Compound Interest Calculator. Calculate the future value of your investments and savings with daily, monthly, or yearly compounding.
Countdown Timer
Free online countdown timer with customizable alerts, sound notifications, and multiple presets. Perfect for cooking, workouts, meetings, and productivity.
Crypto Tool
Free encryption and decryption tool - Encrypt and decrypt text and files using AES encryption. Secure and easy to use online.
CSV โ XLSX Converter
Convert CSV to Excel (XLSX) and vice versa instantly in your browser. No upload, 100% local processing preserves your data privacy.
Days Alive Calculator
Calculate exactly how many days, hours, minutes, and seconds you've been alive. Fun life statistics calculator with milestone tracking and interesting facts.
Dilution & Molarity Calculator
Free online Dilution and Molarity Calculator. Perform M1V1=M2V2 dilution calculations, determine molarity from mass, and calculate percent solutions.
Distribution Suite
One place for Normal, t, F, Chi-square, Poisson โ PDF/PMF, CDF, quantiles and sampling with interactive plots. Local-first, easy and free.
DNS Lookup
Look up DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) for any domain instantly. Free online DNS query and diagnostic tool for network administrators.
Emoji to Image
Convert emojis to images (PNG/JPEG/WEBP/SVG). Batch export, transparent background, works fully offline โ easy and free online tool.
EXIF/GPS Cleaner
View, analyze and completely remove EXIF metadata, GPS location data from photos. Protects your privacy before sharing images online.
Favicon Generator
Free online Favicon Generator. Convert your images and SVG files into professional favicon formats (ICO, PNG) for your website.
Gantt Planner
Create simple Gantt charts: add tasks with dates and colors, drag to reorder, and export as PNG/SVG. Free, local, offline-ready.
GIF Converter
Convert images to animated GIF or extract frames from GIF animations. Adjust frame delay, quality, size and loop settings.
Grade Statistics Analyzer
Analyze class grades: calculate average, distribution, pass rates, and generate statistical reports. Free online grading tool for teachers and educators.
HEIC to JPG/PNG
Free online HEIC to JPG/PNG converter. Convert iPhone HEIC photos locally in your browser with optional quality and size settings. No uploads, fully private.
ICS Calendar Toolbox
Merge multiple ICS calendar files, filter events by date range, convert formats and manage calendar data. Privacy-first calendar tool that works offline.
Image Compressor
Free online image compressor - reduce file size of JPEG, PNG, WebP images while maintaining quality. Easy drag-and-drop interface, batch compression support.
Image Editor
Edit images online with professional tools: resize, rotate, crop, apply filters and effects. Works 100% locally in browser, no upload required.
Infant Growth Chart Percentiles
Free online track height and weight over time and estimate percentiles (approximate). Private, offline, and printable chart.
Instrument Tuner (Microphone)
Free online Instrument Tuner. Accurately tune your guitar, ukulele, violin, or any other instrument using your microphone.
Invoice & Receipt Generator
Create professional invoices and receipts with your logo, currency and taxes. Print or export PDF. Free, local and private โ no sign-up required.
JSON Parser
Free online JSON Parser and Formatter. Parse, validate, format, and minify JSON data instantly. Features syntax highlighting, error detection, and tree view.
LaTeX Formula Editor
Type LaTeX mathematical formulas and render them instantly in high quality. Export to PNG, copy to clipboard, works offline.
LaTeX Formula Renderer
Free online LaTeX Formula Renderer. Convert LaTeX math equations to high-quality PNG or SVG images instantly. Uses KaTeX for fast rendering.
Lung Nodule Risk Guide (Educational)
Free online estimate qualitative risk and view guideline-based follow-up for incidental pulmonary nodules. Private, offline, multilingual. Not medical advice.
macOS Shortcuts
Free online quick reference for common macOS keyboard shortcuts including screenshots, window management, and system controls.
Memory Match
Play Memory Match online for free. Flip cards to find matching pairs in this classic puzzle game. Features timed and move-limited modes, combo scoring.
Morse Code Translator
Translate text to Morse code and decode Morse code to text instantly. Includes audio playback with adjustable speed. Free online tool for learning and practice.
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and amortization schedule. Compare loan scenarios and plan your finances. Easy and free online calculator.
Normal Distribution
Compute Normal distribution PDF, CDF and inverse CDF (quantile). Plot curve and sample values โ local-first, easy and free.
Omikuji: Japanese Fortune
Draw a Japanese Omikuji fortune (Daikichi to Daikyo) with authentic traditional weights. Shareable result with beautiful animations โ local, easy and free.
Online Metronome & Tap BPM
Precise online Metronome and Tap BPM tool. Features visual pulse, adjustable subdivisions, accents, and tap tempo function. Perfect for music practice.
Passport Photo Maker & Layout
Free online create passport/ID photos with crop guides, simple background cleanup, and printable A4 layout. Works offline.
PDF Converter
Free online PDF converter - convert PDF to Word (DOCX), Excel (XLSX), PowerPoint (PPTX), images (PNG, JPG, WebP), HTML, and text. Also convert images to PDF. Easy to use, no registration required.
QR Code Decoder
Free online QR code decoder and scanner - decode QR codes from images, camera, or drag and drop. Extract text, URLs, WiFi passwords, contact info from any QR code instantly.
QR Code Generator & Scanner
Free online generate, scan, and customize QR codes with various data types including text, URLs, WiFi, contacts, and more.
Random Picker
Free online random picker and lottery wheel. Make decisions easy with random selection, spin wheel, and lucky draw. Perfect for giveaways and games.
Regex Tester
Test and validate regular expressions with real-time matching, syntax highlighting, and common patterns library. Free online regex tester for developers.
Renovation Calculator
Free online Renovation Calculator for home improvement projects. Accurately estimate materials needed for tiles, paint, flooring, and wallpaper.
Simple DOCX Editor
Open and edit DOCX Word files directly in browser without Microsoft Office. Modify text content, adjust formatting, export edited document.
Simple Table Editor
Open Excel (XLSX) sheets, edit cells, insert or delete rows and columns, run instant search, view column stats, and export to XLSX or CSV โ.
Subtitle Timeline Editor
Free online SRT/WebVTT subtitle editor with video preview. Shift, stretch, split/merge, validate, and export โ all offline in your browser.
Tarot Reading
Free online tarot card reading - discover your future with authentic tarot cards. Multiple spreads including single card, three-card, and Celtic cross.
Text Diff Comparison
Free online compare two texts and highlight differences. Side-by-side comparison with line-by-line and character-level diff visualization.
Text Statistics
Free online text analysis tool - count words, characters, sentences, paragraphs. Get detailed statistics including reading time, keyword density.
Unit Converter
Free online convert between different units of measurement including length, weight, temperature, volume, area, speed, and more.
Volumetric Weight & Packing
Free online Volumetric Weight Calculator and Packing Planner. Calculate dimensional weight for DHL, UPS, FedEx. Estimate box packing capacity. Works offline.
World Clock
Free online world clock tool - check current time in multiple timezones. Add favorite cities, compare different time zones.
Zodiac Fortune
Free online zodiac fortune teller - check daily horoscopes, personality traits, compatibility, and fortune predictions for all 12 zodiac signs.
Why creators choose ToolFoundry
ToolFoundry curates easy and free browser utilities that work instantly across devices. Every tool stays lightweight, private, and optimized for both mobile and desktop workflows.
Instant & Local
100% browser-based tools with no uploads, sign-ups, or installations required.
High Performance
Optimized for quick loading, low bandwidth usage, and offline caching capabilities.
Always Growing
Continuously expanding collection covering productivity, creative, and developer needs.
Tool collections at a glance
Explore ready-to-use kits that combine practical utilities for different workflows. Each category highlights quick wins for everyday tasks.
Productivity boosters
Schedule smarter, generate reports, and automate office tasks with easy templates, planners, and converters.
Creative studio
Polish visuals, edit audio, and remix media without leaving your browser. Perfect for designers and indie makers.
Developer toolbox
Validate JSON, format data, and debug faster using secure, local-first utilities.
Frequently asked questions
- Is every tool really free to use?
- Yes. All ToolFoundry tools are easy and free online experiences with no hidden paywalls or trials.
- Do the tools require uploads or sign-ins?
- No uploads, logins, or accounts are needed. Tools process data locally whenever possible.
- Can I access the tools on mobile devices?
- Absolutely. Every tool supports responsive layouts, dark mode, and performs smoothly on phones and tablets.
All Free Online Tools
Browse our complete collection of free browser-based tools. No registration or downloads required.