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Celsius to Kelvin

Convert degrees Celsius to kelvins

"Celsius to Kelvin" Calculator

How to convert degrees Celsius to kelvins

Worked example: 25 °C = 298.15 K

25 °C + 273.15 = 298.15 K

Rule: K = °C + 273.15 — the kelvin scale starts at absolute zero, 0 K = -273.15 °C, and a kelvin is the same step as a degree Celsius.

Most asked values
°C	K	Usually
-273.15 °C	0 K	absolute zero
0 °C	273.15 K	weather
20 °C	293.15 K	weather
25 °C	298.15 K	weather
27 °C	300.15 K	weather
37 °C	310.15 K	body temperature
100 °C	373.15 K	—
1,000 °C	1,273.15 K	—

See Also

Kelvin to Celsius - Convert kelvins to degrees Celsius
Fahrenheit to Kelvin - Convert degrees Fahrenheit to kelvins
Celsius to Fahrenheit - Convert degrees Celsius to degrees Fahrenheit

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FAQ

What is the formula to convert Celsius to Kelvin?

K = °C + 273.15: add 273.15 to the temperature in degrees Celsius. A change of 1 °C is the same as a change of 1 K.

What is 25 degrees Celsius in Kelvin?

25 °C = 298.15 K — the standard room temperature of chemistry tables.

Why do gas-law formulas use kelvins?

Formulas like pV = nRT need absolute temperature, counted from absolute zero (0 K = -273.15 °C); in degrees Celsius the same law would give nonsense at 0 °C.