Free Online Converters - Unit, Currency, Data Formats
Free online converters for units, currency, data formats, and encoding. Fast and accurate conversions.
🔄
Unit Converter
Convert between 8 categories: length, weight, temperature, area, volume, speed, time, data.
Open tool →💰
Currency Converter
Convert between 30+ world currencies with static exchange rates.
Open tool →📄
CSV to JSON
Convert CSV data to JSON format with customizable delimiter.
Open tool →📄
HTML to Markdown
Convert HTML code to clean Markdown text instantly.
Open tool →🔐
Base64 Encoder/Decoder
Encode and decode Base64 strings. Supports text and file data.
Open tool →🔗
URL Encoder/Decoder
Encode and decode URLs and URI components safely.
Open tool →🔑
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes using Web Crypto API.
Open tool →Guides & Tutorials
About These Tools
All tools run directly in your browser - no downloads, no signups, completely free. Your data stays on your device.