Free Online Tools That Just Work
Calculators, converters, generators, developer utilities, and AI-powered writing tools — all free, all instant, no account required.
Showing 26 of 26 tools
Age Calculator
Calculate your exact age in years, months and days from your date of birth.
Percentage Calculator
Find percentages, increases, decreases, and ratios between two numbers instantly.
BMI Calculator
Calculate your Body Mass Index and see your healthy weight range instantly.
Password Generator
Generate strong, random passwords with customizable length and character sets.
QR Code Generator
Turn any text or URL into a downloadable QR code in seconds.
Word Counter
Get live word count, character count, reading time, and keyword density stats.
Unit Converter
Convert between length, weight, temperature, area, volume, speed, and time units.
Random Number Generator
Generate one or many random numbers within a custom range, with stats included.
Color Picker
Pick, preview, and convert colors between HEX, RGB, and HSL — or extract from an image.
Image Compressor
Compress and resize images in your browser — no upload, no quality surprises.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting and instant error detection.
Base64 Encoder/Decoder
Encode text or files to Base64, or decode Base64 strings back to readable text.
URL Encoder/Decoder
Encode special characters for safe URLs, or decode percent-encoded URL strings.
UUID Generator
Generate v4 random or v1 timestamp-based UUIDs in bulk, ready to copy or export.
Regex Tester
Test regular expressions live against sample text, with match groups and replace mode.
Text Diff Checker
Compare two blocks of text side by side and see exactly what changed, line by line.
Markdown Previewer
Write Markdown on the left, see the rendered HTML preview update live on the right.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back, with time zone details.
JWT Decoder
Decode a JWT's header and payload instantly and check its expiry status.
Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences, or words for mockups and layouts.
Color Converter
Convert any color between HEX, RGB, HSL, HSV, and CMYK formats simultaneously.
Favicon Generator
Turn text, an emoji, or an image into a favicon in every size browsers need.
Meta Tag Generator
Generate SEO and social sharing meta tags with live previews for every major platform.
AI Text Summarizer
Summarize long text into a short, medium, or detailed summary using AI.
AI Grammar Checker
Catch grammar, spelling, and phrasing issues with AI-powered inline suggestions.
AI Paragraph Rewriter
Rewrite any paragraph in a different tone — professional, casual, persuasive, and more.