Free online tool

Convert common units instantly

Convert between useful everyday metric and imperial units for length, mass, area, volume, speed, data size and temperature. Results are calculations for convenience; check precision and context before use.

Open the interactive Unit Converter

The interactive tool loads in the page. Enable JavaScript to enter data, process content, and download results.

Quick guide

How to use this tool

  1. 01Choose a measurement category.
  2. 02Select the source and target units, then enter a value.
  3. 03Read the converted value and unit; temperature uses its own offset-aware conversion.

Capabilities

Features and supported formats

  • Seven measurement categories with common units.
  • Correct offset handling for Celsius, Fahrenheit and Kelvin.
  • No file upload or account; calculations happen in the browser.

Supported formats

Categories: length, mass, area, volume, speed, digital storage and temperature.

Answers

Frequently asked questions

Are temperature conversions accurate?

The converter uses the standard Celsius, Fahrenheit and Kelvin relationships. Displayed values are rounded; the underlying calculation retains full JavaScript precision.

Are digital units decimal or binary?

Digital storage conversions use decimal SI units (1 kB = 1,000 bytes; 1 MB = 1,000,000 bytes). Check a device or software specification when binary units are required.