How many centimetres are in an inch?

Exactly 2.54 cm. Enter 1 inch in the Length category to see every other unit as well.

How do I convert kilograms to pounds?

1 kg ≈ 2.2046 lb. Choose Weight, enter the value in kilograms and read the pound row.

How do I convert Fahrenheit to Celsius?

°C = (°F − 32) × 5 / 9. Pick the Temperature category and enter the Fahrenheit value to get Celsius and Kelvin.

Is a KB 1000 or 1024 bytes here?

The data category uses 1024 bytes per KB, matching how operating systems report file sizes.

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📏Unit Converter - Length, Weight, Temperature, Speed, Data and More

Enter a value and every unit in the same category is converted at once, so there is no target unit to pick. Eleven categories cover metric, imperial and traditional Chinese units for everyday and classroom use.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use Unit Converter

1Choose a category (length, weight, temperature …)
2Enter the value and select the unit you are converting from
3Read every converted value below; click a row to switch the input unit

FAQ

How many centimetres are in an inch?: Exactly 2.54 cm. Enter 1 inch in the Length category to see every other unit as well.
How do I convert kilograms to pounds?: 1 kg ≈ 2.2046 lb. Choose Weight, enter the value in kilograms and read the pound row.
How do I convert Fahrenheit to Celsius?: °C = (°F − 32) × 5 / 9. Pick the Temperature category and enter the Fahrenheit value to get Celsius and Kelvin.
Is a KB 1000 or 1024 bytes here?: The data category uses 1024 bytes per KB, matching how operating systems report file sizes.