About the Unit Converter tool
Inches to centimeters, pounds to kilograms, cups to milliliters, acres to square feet, Fahrenheit to Celsius — pick a category and convert instantly.
How to use it
- Choose a category.
- Enter a value and pick the “from” unit.
- Pick the “to” unit and read the result.
Frequently asked questions
Are these exact?
Conversions use internationally defined factors (e.g. 1 inch = 2.54 cm exactly) and are shown to 10 significant digits.