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Temperature conversion

Kelvin to Celsius

One kelvin is -272.15 degrees Celsius. Enter any value below to convert it instantly, or use the reference table further down for the numbers you need most often.

1 K = -272.15 °CInstantFree

Conversion rate

1 K = -272.15 °C

°C = K − 273.15

Result-272.15

1 K = -272.15 °C

1 K in every temperature unit
°C-272.15
°F-457.87
K1

Reference

Kelvin to Celsius table

The values people look up most often, rounded for practical use.

Kelvin (K)Celsius (°C)
-40 K-313.15 °C
-20 K-293.15 °C
-10 K-283.15 °C
0 K-273.15 °C
10 K-263.15 °C
20 K-253.15 °C
25 K-248.15 °C
30 K-243.15 °C
37 K-236.15 °C
100 K-173.15 °C

How to convert kelvin to degrees Celsius

Temperature scales do not share a zero point, so you cannot convert them by multiplying alone — an offset is always involved. Apply °C = K − 273.15 and the result is exact.

Worked example: 12 kelvin × -272.15 = -261.15 degrees Celsius.

Where this conversion comes up

Temperature conversion matters most in cooking, weather and science. Two anchors are worth memorising: water freezes at 0 °C / 32 °F and boils at 100 °C / 212 °F. A rough mental shortcut for °C to °F is “double it and add 30”, which is close enough for weather but not for an oven.

Quick answers

More conversions

Other temperature conversions

°C → K1 = 274.15°C → °F1 = 33.8°F → °C1 = -17.22222°F → K1 = 255.928

Answers

Frequently asked questions

One kelvin equals -272.15 degrees Celsius. Going the other way, one celsius is 274.15 kelvin.

Use °C = K − 273.15. The converter above applies it for you, but the formula is useful in a spreadsheet — put your value in column A and the formula in column B.

Yes. The temperature scales are related by exact definitions, so the conversion is precise — only the rounding in the display limits it.

Yes — press the ⇄ swap button in the converter, or use the dedicated Celsius to Kelvin page.

No. The converter runs entirely in your browser, there is no account, and nothing you type is sent anywhere.

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