🧰 Free Online Tools
47+ handy tools that work right in your browser. No signup, no tracking, completely free — forever.
All 47 tools
Age Calculator
Find your exact age in years, months, days — and days until your next birthday.
BMI Calculator
Calculate your Body Mass Index with metric or imperial units. Includes category scale.
Percentage Calculator
Six common percent calculations: X% of Y, increase, decrease, add/subtract, and more.
Tip Calculator
Calculate tip and split any bill between any number of people instantly.
JSON Formatter & Validator
Pretty-print, minify, and validate JSON with syntax highlighting and error detection.
JWT Decoder
Decode JWT header, payload, and claims. Inspect expiry and algorithm instantly.
Regex Tester
Test regular expressions live with match highlighting and capture group details.
Hash Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
Color Converter
Convert colors between HEX, RGB, and HSL with live preview and copy buttons.
Base64 Encoder / Decoder
Encode and decode text or data in Base64 format.
UUID Generator
Generate v4 UUIDs for databases and APIs.
Diff Checker
Compare two texts line by line and see additions and removals highlighted instantly.
Markdown to HTML
Live Markdown editor with rendered preview and raw HTML output side by side.
File to Base64
Convert any file to a Base64 string or data URI instantly.
Internet Speed Test
Measure your download speed, upload speed, ping, and jitter in seconds.
DNS Lookup (NSLookup)
Query A, AAAA, MX, CNAME, TXT, NS, SOA records via Google & Cloudflare DNS.
IP Address Lookup
Find country, city, ISP, timezone, ASN, and coordinates for any IP.
Visual Traceroute
Trace the DNS resolution path to any domain with latency per hop.
HTTP Ping
Measure HTTP response time and availability of any URL. Min/max/avg stats.
WHOIS Lookup
Look up domain registration, registrar, expiry, and name servers via RDAP.
Image Resizer
Resize images to exact pixels or a percentage. Presets for HD, 4K, and social media.
Image Cropper
Drag to select a crop area with aspect ratio lock and social media presets.
Image Rotator & Flipper
Rotate images by 90°, 180°, custom angle, or flip horizontally and vertically.
SVG to PNG Converter
Convert SVG code or files to PNG at any size. Generate all icon sizes at once.
Favicon Generator
Generate all favicon sizes (16px–512px) + Apple Touch and PWA icons from any image.
PDF Merger
Combine multiple PDF files into one. Drag to reorder before merging.
PDF to Image
Convert every PDF page to JPG or PNG. Download all pages as a ZIP.
Image Converter
Convert images between JPG, PNG, WebP, and BMP formats instantly.
Image Compressor
Reduce image file size while keeping original visual quality.
Background Remover
Draw a line around any object to keep it and erase the rest — exports a transparent PNG.
PDF Compressor
Shrink PDF file size by re-rendering pages at a lower resolution.
Password Generator
Generate strong, secure random passwords instantly.
Word Counter
Count words, characters, sentences and reading time.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
Barcode Generator
Generate Code128, EAN-13, UPC-A, Code39, ITF-14 and more. Bulk + XLSX import.
QR Code Generator
Turn any URL or text into a scannable QR code.
Stopwatch & Timer
Precise stopwatch with lap tracking and a countdown timer in one place.
Random Number Generator
Generate random numbers, unique sets, bulk lists, dice rolls, and coin flips.
Text to Speech
Convert any text to speech using your browser's built-in voices. Adjust speed and pitch.
Screen Resolution Checker
Instantly check your screen resolution, viewport size, DPR, and browser info.
Unix Timestamp Converter
Convert Unix epoch timestamps to readable dates or any date to a Unix timestamp.
URL Encoder / Decoder
Encode or decode URL strings and parse query parameters instantly.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by paragraphs, sentences, or words.
Number Formatter
Format numbers with commas, currency, percentage or scientific notation in 30+ locales.
Number to Words
Convert any number to English words — including ordinals and currency.
Loan & EMI Calculator
Calculate monthly payments, total interest, and full amortization schedule for any loan.
Palindrome Checker
Check if any word or phrase is a palindrome. Finds all palindromic substrings too.
Why Use ToolBox?
All tools run locally in your browser. No server round-trips.
Your data never leaves your device. We store nothing.
No paywalls, no account required. Just open and use.