Free Online Tools
Browser tools for developers, writers, designers, security, and everyday calculations. Free, no sign-up, and processed locally on your device.
Regex Generator
Generate, test, and explain regular expressions for text processing and validation.
QR Code Generator
Generate customizable QR codes for URLs, WiFi, vCards, email, phone, SMS, and plain text.
JSON Formatter
Format, validate, minify, and sort JSON data.
Base64 Encoder/Decoder
Encode and decode Base64 text and files instantly.
URL Encoder/Decoder
Encode and decode URLs, query strings, and form data.
Password Generator
Generate secure customizable passwords with a strength indicator and local history.
Lorem Ipsum Generator
Generate placeholder text by paragraphs, words, or bytes.
Color Picker & Converter
Pick and convert colors between HEX, RGB, and HSL formats.
Markdown to HTML
Convert Markdown to sanitized HTML with a live preview.
Unit Converter
Convert length, weight, temperature, and data size units instantly.
Text Diff Checker
Compare two texts with clear added, removed, and unchanged lines.
CSV to JSON Converter
Convert CSV to JSON and JSON to CSV with configurable delimiters.
Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, Title Case, and more.
UUID Generator
Generate UUID v4 and time-ordered UUID v7 values singly or in bulk.
Epoch & Date Converter
Convert Unix timestamps to readable dates and dates back to timestamps.
Word & Character Counter
Count words, characters, sentences, paragraphs, reading time, and keyword density.
Percentage Calculator
Calculate percentages, percentage change, tips, discounts, and grades.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes and compare known hashes.
HTML Entity Encoder/Decoder
Encode and decode named, decimal, and hexadecimal HTML entities.
Random Number Generator
Generate random numbers, dice rolls, coin flips, and lottery picks.
Age Calculator
Calculate exact age, zodiac signs, and time until the next birthday.
Number Base Converter
Convert integers between binary, octal, decimal, and hexadecimal.
Off-Grid Calculator
Estimate solar requirements, battery runtime, wire gauge, and system cost.
Image Compressor
Compress JPEG, PNG, and WebP images locally with adjustable quality.
BMI Calculator
Calculate Body Mass Index with metric or imperial measurements.
List Randomizer & Team Picker
Shuffle lists and assign balanced random teams.