📏 Unit Converter

Convert between metric and imperial units of length, weight, temperature, volume, area, speed, time, data, energy and pressure.

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Unit Converter inputs

Result

1 cm =

0.39370079 in

in = cm × 0.39370079

1 centimeter = 0.39370079 in · in to cm

Centimeters to Inches conversion table

Centimeters (cm)Inches (in)
0.1 cm0.039370079 in
0.5 cm0.19685039 in
1 cm0.39370079 in
2 cm0.78740157 in
3 cm1.1811024 in
5 cm1.9685039 in
10 cm3.9370079 in
20 cm7.8740157 in
25 cm9.8425197 in
50 cm19.685039 in
100 cm39.370079 in
1,000 cm393.70079 in

Other length conversions

cm to mmcm to mcm to kmcm to incm to ftcm to ydcm to micm to nmi

Popular conversions

Centimeter to InchInch to CentimeterFoot to MeterMeter to FootKilometer to MileMile to KilometerKilogram to PoundPound to KilogramCelsius to FahrenheitFahrenheit to CelsiusMilliliter to US cupUS cup to MilliliterLiter to US gallonUS gallon to LiterGram to OunceOunce to GramSquare foot to Square meterAcre to HectareKilometer per hour to Mile per hourMile per hour to Kilometer per hourMegabyte to GigabytePound per square inch to Bar

Metric and imperial units

The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.

Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.

This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.

Frequently asked questions

How many centimeters are in an inch?

Exactly 2.54 centimeters. The inch has been defined this way since 1959.

How do I convert Celsius to Fahrenheit?

Multiply by 9/5 and add 32. For example, 25 °C × 9/5 + 32 = 77 °F.

How many pounds are in a kilogram?

1 kilogram = 2.20462 pounds. To convert kg to lb, multiply by 2.20462.

Is a US gallon the same as a UK gallon?

No. A US gallon is 3.785 liters while an imperial (UK) gallon is 4.546 liters – about 20% larger.