Method and assumptions
Convert commonly used metric and US customary units for measurement, speed, and decimal digital storage. Results update as you type, with the correct offset formula applied for temperature conversions.
Unit Converter
Convert measurement, speed, and digital storage units instantly.
Reviewed: 2026-07-21
How to use it
- Choose a measurement category.
- Select the source and target units.
- Enter a value to see the result immediately.
When it helps
- Converting an international recipe
- Comparing inches and centimeters
- Understanding temperatures while traveling
How to verify the result
Check input units and reference dates first. For an important decision, compare the result with an official source or original document. A rounded display can differ slightly from the underlying value.
Frequently asked questions
How many centimeters are in one inch?
One international inch is exactly 2.54 centimeters.
How do I convert pounds to kilograms?
Multiply pounds by approximately 0.453592 to get kilograms.
What is 0 Celsius in Fahrenheit?
Zero degrees Celsius equals 32 degrees Fahrenheit.