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Temperature

Kelvin to Celsius Converter

Convert kelvins (K) to degrees Celsius (°C). 1 K = -272.15 °C, and 1 °C = 274.15 K.

1 K = -272.15 °C

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Formula

°C = K − 273.15

How to convert

To convert kelvins to degrees Celsius, use the formula °C = K − 273.15. For example, 310.15 K = 37 °C.

Conversion table

Kelvin (K) Celsius (°C)
0 K -273.15 °C
100 K -173.15 °C
200 K -73.15 °C
250 K -23.15 °C
273.15 K 0 °C
293.15 K 20 °C
300 K 26.85 °C
310.15 K 37 °C
373.15 K 100 °C
500 K 226.85 °C
1,000 K 726.85 °C

About these units

Celsius puts 0° at the freezing point and 100° at the boiling point of water at sea level. Fahrenheit puts them at 32° and 212°, so one Celsius degree equals 1.8 Fahrenheit degrees. Kelvin uses Celsius-sized degrees but starts at absolute zero (−273.15 °C) and is written without a degree sign. Because the scales have different zero points, a temperature conversion adds or subtracts an offset as well as scaling.

FAQ

› How do I convert K to °C?

1 K = -272.15 °C. To convert, use the formula °C = K − 273.15: 310.15 K = 37 °C.

› What is 1 °C in K?

1 °C = 274.15 K. The reverse formula is K = °C + 273.15.

› At what temperature are Celsius and Fahrenheit equal?

At −40°: −40 °C is exactly −40 °F.

› What is normal body temperature?

About 37 °C, which is 98.6 °F or 310.15 K. Normal readings vary by about half a degree Celsius.