Free Online Conversion Tools
Convert units, format text, encode data, and transform images - all in your browser, completely free. No sign-up required.
Popular Conversions
Unit Converters
Convert between different units of measurement
Quick Converters
Popular one-click unit conversions
Text & Data Tools
Format, encode, and transform text and data
Why Use Calqly?
100% Free
All our tools are completely free to use, with no registration required.
Privacy First
All conversions happen in your browser. Your data never leaves your device.
Fast & Simple
No ads, no clutter. Just the tools you need, working instantly.
About Our Conversion Tools
Calqly provides a comprehensive suite of free online calculators and conversion tools designed to make your life easier. Whether you need to convert units of measurement, encode text data, calculate your BMI, or transform images, we have the tool for you.
Unit Conversion Made Simple
Our unit converters support a wide range of measurements including length (meters, feet, inches, miles), weight (kilograms, pounds, ounces), temperature (Celsius, Fahrenheit, Kelvin), area, volume, and speed. Each converter includes quick reference tables, conversion formulas, and practical examples to help you understand and verify your conversions.
Developer Tools
For developers and technical users, we offer essential text and data tools including JSON formatting and validation, Base64 encoding/decoding, URL encoding, Markdown preview, and cryptographic hash generation (SHA-256, SHA-512, etc.). All processing happens client-side for maximum security.
Image Processing
Our image tools allow you to resize, compress, and convert images between formats (PNG, JPEG, WebP) directly in your browser. Your images are never uploaded to our servers, ensuring complete privacy.