Unit Converter

Unit Converter covers ten everyday measurement types with metric, imperial and US customary units. Type a value and see it converted instantly, with every other unit in the category listed for quick reference.

  • Numbers → Converted values
  • Runs in your browser
  • Free, no sign-up
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How to use Unit Converter

  1. Choose a category (e.g. Length).
  2. Pick “from” and “to” units.
  3. Type a value – the result and a full conversion table update instantly.

Examples

  • 1 mile = 1.609344 km
  • 100 °F = 37.7778 °C
  • 1 GiB = 1,073,741,824 bytes; 1 GB = 1,000,000,000 bytes

Supported formats

InputNumbers
OutputConverted values
ProcessingOn your device, in the browser (no upload)

Limitations to know

  • US and imperial volume units differ (a US gallon is 3.785 L, an imperial gallon is 4.546 L) – both are listed separately.
  • Data units list both decimal (kB, MB, GB) and binary (KiB, MiB, GiB) prefixes.

Privacy: Unit Converter runs entirely in your web browser. Your Numbers data is not uploaded, stored or shared, and nothing about its contents is sent to analytics.

Frequently asked questions

How accurate are the conversions?

Conversion factors use exact international definitions where they exist (for example, 1 inch = 2.54 cm exactly). Results display up to 10 significant digits.

Why do GB and GiB differ?

GB is decimal (1,000³ bytes) and GiB is binary (1,024³ bytes). Storage makers usually use GB; operating systems often show GiB.