Temperature conversion

There are three commonly used measurements of temperature: the degree Celsius (°C), degree Fahrenheit (°F), and the kelvin (K). The degree Celsius is the unit used most commonly around the world for everyday measurements of temperature, such as how cold or hot it is outside. In the United States, the degree Fahrenheit is most commonly used for this purpose.

For scientific purposes, the kelvin, the base unit of temperature in the International System of Units (SI) is used instead. It is commonly used with the degree Celsius because their temperature scales share the same magnitude, meaning that each degree Celsius has the same size as each kelvin.

Being able to convert between these measurements of temperature is important when traveling to or communicating with different regions of the world.

Temperature converter

Below is a converter that can be used to convert between Celsius, Fahrenheit, and kelvin. Use the dropdown menu to select which measurements of temperature to convert between, then enter the corresponding values.


Converting Celsius

To convert a temperature in Celsius to Fahrenheit, use the following formula:

°C to °F:  °C × + 32 = °F


Convert 22°C to °F.

22 × + 32 = 71.6°F

To convert from Celsius to kelvin, use the following formula:

°C to K:  °C + 273.15 = K


Convert 22°C to K.

22 + 273.15 = 295.15 K

Converting Fahrenheit

To convert a temperature in Fahrenheit to Celsius, use the following formula:

°F to °C:  (°F - 32) × = °C


Convert 71.6°F to °C.

(71.6 - 32) × = 22°C

To convert from Fahrenheit to kelvin, use the following formula:

°F to K:  (°F + 459.67) × = K


Convert 71.6°F to K.

(71.6 + 459.67) × = 295.15 K

Converting kelvin

Use the following formula to convert from kelvin to Celsius:

K to °C:  K - 273.15 = °C


Convert 295.15 K to °C.

295.15 - 273.15 = 22°C

To convert from kelvin to Fahrenheit, use the following formula:

K to °F:  K × - 459.67 = °F


Convert 295.15K to °F.

295.15 × - 459.67 = 71.6°F