Converter

Convert degrees Celsius to kelvin

degrees Celsius (°C)

kelvin (K)

274.15

Formula: K = °C + 273.15

°C to K quick reference table

degrees Celsius (°C)	kelvin (K)
1	274.15
2	275.15
5	278.15
10	283.15
20	293.15
25	298.15
50	323.15
100	373.15
250	523.15
500	773.15
1,000	1,273.15

Everyday °C values, converted

0 °C = 273.15 K — water freezing.
20 °C = 293.15 K — room temperature.
37 °C = 310.15 K — normal body temperature.
100 °C = 373.15 K — water boiling at sea level.

Where °C to K comes up

Temperature conversions matter for weather, cooking and fever readings. Recipes are the strictest case: an oven set 20 degrees out in the wrong scale is the difference between baked and burnt.

Doing °C to K in your head

Kelvin and Celsius differ by a flat 273.15, so the shortcut is simply adding or subtracting 273.

Precision and rounding

The formula K = °C + 273.15 is exact — temperature scales are defined against each other, so there is no measurement uncertainty in the conversion itself. Round to whole degrees for weather and to one decimal place for cooking or clinical readings.

Frequently Asked Questions & How-To

1 degree Celsius equals 274.15 kelvin. 10 degrees Celsius is 283.15 kelvin, and 100 degrees Celsius is 373.15 kelvin.

The conversion uses K = °C + 273.15. Type any amount above and the result updates as you type — no button press and no page reload.

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