Converter

Convert kelvin to degrees Celsius

kelvin (K)

degrees Celsius (°C)

-272.15

Formula: °C = K − 273.15

K to °C quick reference table

kelvin (K)	degrees Celsius (°C)
1	-272.15
2	-271.15
5	-268.15
10	-263.15
20	-253.15
25	-248.15
50	-223.15
100	-173.15
250	-23.15
500	226.85
1,000	726.85

Everyday K values, converted

273.15 K = 0 °C — water freezing.
293.15 K = 20 °C — room temperature.

Where K to °C 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 K to °C 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 °C = K − 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 kelvin equals -272.15 degrees Celsius. 10 kelvin is -263.15 degrees Celsius, and 100 kelvin is -173.15 degrees Celsius.

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

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