Kelvin to Celsius Converter (K to °C)

How to convert Kelvin to Celsius

°C = K − 273.15

To convert Kelvin to Celsius, subtract 273.15. The scales share the same degree size, so no multiplication is needed - only the offset that moves zero from absolute zero (0 K) up to water’s freezing point (273.15 K = 0°C).

Worked examples

Convert 298 K: 298 − 273.15 = 24.85°C (about room temperature)
Convert 373.15 K: 373.15 − 273.15 = 100°C (water boils)
Convert 184 K: 184 − 273.15 = -89.15°C (coldest air temperature ever recorded)

Kelvin to Celsius conversion table (K to °C)

Kelvin (K)	Celsius (°C)
0K	-273.15°C
20K	-253.15°C
40K	-233.15°C
60K	-213.15°C
80K	-193.15°C
100K	-173.15°C
120K	-153.15°C
140K	-133.15°C
160K	-113.15°C
180K	-93.15°C
200K	-73.15°C
220K	-53.15°C
240K	-33.15°C
260K	-13.15°C
280K	6.85°C
300K	26.85°C
320K	46.85°C
340K	66.85°C
360K	86.85°C
380K	106.85°C
400K	126.85°C

Reference temperatures in K and °C

Reference point	K	°C
Absolute zero	0K	-273.15°C
Arctic winter day	243.15K	-30°C
Home freezer	255.15K	-18°C
Water freezes / ice melts	273.15K	0°C
Refrigerator	276.15K	3°C
Cool spring day	283.15K	10°C
Comfortable room	294.15K	21°C
Summer afternoon	303.15K	30°C
Normal body temperature	310.15K	37°C
Hot bath	313.15K	40°C
Death Valley record heat	329.85K	56.7°C
Water boils (sea level)	373.15K	100°C
Moderate oven	453.15K	180°C

Frequently asked questions

What is 0 Kelvin in Celsius?

0 K is -273.15°C - absolute zero, the lowest temperature physically possible.

Can temperatures go below 0 K?

Not in the everyday sense. Absolute zero is the floor of thermal energy; exotic “negative absolute temperatures” in physics labs describe unusual energy distributions, not colder-than-zero systems.

What is 310 Kelvin in Celsius?

310 K equals 36.85°C - almost exactly normal human body temperature (37°C), which is why 310 K appears throughout biology and medical physics.