How to Convert Celsius to Kelvin

Steps to Convert Celsius to Kelvin

Kelvin and Celsius use the same size degree, but almost all thermometers are marked in Celsius or Fahrenheit and not in Kelvin, so it's good to know how to do the temperature conversion.
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Celsius and Kelvin are the two most important temperature scales for scientific measurements. Fortunately, it's easy to convert between them. All that is needed to convert Celsius to Kelvin is one simple step. (Note it's "Celsius", not "Celcius", a common mis-spelling.)

Celsius To Kelvin Conversion Formula

Take your Celsius temperature and add 273.15.

K = °C + 273.15

Your answer will be in Kelvin.
Remember, the Kelvin temperature scale does not use the degree (°) symbol.

Celsius To Kelvin Conversion Examples

For example, if you want to know what 20°C is in Kelvin:

K = 20 + 273.15 = 293.15 K

If you want to know what -25.7°C is in Kelvin:

K = -25.7 + 273.15, which may be rewritten as:

K = 273.15 - 25.7 = 247.45 K

How to Convert Celsius to Fahrenheit
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How to Convert Kelvin to Fahrenheit
How to Convert Kelvin to Celsius