UnitsConversion.io

About UnitsConversion.io

A fast, free, and accurate unit converter designed for simplicity and privacy.

What We Do

UnitsConversion.io is a comprehensive unit conversion tool that helps you convert between different units of measurement instantly. Whether you need to convert kilometers to miles, kilograms to pounds, or Celsius to Fahrenheit, we've got you covered.

13
Categories
97
Units
100%
Free

How It Works

Every conversion on UnitsConversion.io happens entirely in your web browser using JavaScript. When you enter a value and select units:

  1. Your browser calculates the conversion using precise mathematical formulas
  2. The result is displayed instantly
  3. No data is ever sent to any server

This approach means conversions are instantaneous, work offline (once the page is loaded), and keep your data completely private.

Supported Categories

We support conversions across 13 categories:

Length(11 units)Weight(9 units)Temperature(3 units)Volume(12 units)Area(9 units)Speed(6 units)Time(9 units)Data Storage(10 units)Energy(8 units)Pressure(7 units)Fuel Economy(4 units)Angle(5 units)Frequency(4 units)

Accuracy

We use standard conversion factors recognized by international standards organizations. Results are displayed with up to 6 significant digits for everyday use, with full precision available when copying to clipboard.

Note: While we strive for accuracy, for critical applications (scientific research, engineering, medical, etc.), please verify conversions using authoritative sources.

Technology

UnitsConversion.io is built with modern web technologies:

  • Next.js for fast, SEO-friendly pages
  • TypeScript for reliable code
  • Tailwind CSS for clean, responsive design
  • Client-side calculation for instant, private conversions

Contact

Have questions, suggestions, or found a bug? We'd love to hear from you. Contact us at: support@unitsconversion.io