About Cheat Sheet Conversion
A free unit converter and a set of quick reference guides, built to give you the answer fast.
What you can convert
The converter covers length, weight, temperature, volume, speed, area, energy, pressure, fuel economy, time and data. The guides go deeper on the conversions people look up most often, with charts and easy ways to estimate in your head.
How the numbers work
Most conversions use exact definitions: an inch is 2.54 cm, a pound is 0.45359237 kg, and a mile is 1,609.344 m. Results are shown to up to ten significant digits, with tiny calculation noise removed. Units that vary by country are labeled, such as the US cup and the US gallon. Fuel economy is handled specially, because miles per gallon and liters per 100 km are inverses of each other.
Privacy
There is nothing to sign up for. Calculations run in your browser, so the numbers you type are not sent to us. See the privacy policy for details.
How the site is paid for
The site may show ads, which help cover the cost of running it. Ads never change a conversion result.
Found a mistake?
Please tell us on the contact page. We will check it and fix it.