Convert Kelvin to Celsius
1 Kelvin (K) = -272.15 Celsius (°C). Use the free converter below to instantly convert any kelvin value to celsius, or view the full conversion table and formula.
1 K = -272.15 °C
Kelvin to Celsius Conversion Table
How to Convert Kelvin to Celsius
To convert Kelvin to Celsius, subtract 273.15 from the Kelvin temperature. For example, 310 K − 273.15 = 36.85°C. The Kelvin and Celsius scales have the same degree size — only the zero point differs. Kelvin starts at absolute zero, while Celsius starts at the freezing point of water.
Worked Example: Convert 173 K to °C
Start with the value in kelvin
173 K
Apply the formula
°C = 173 − 273.15
Calculate the result
173 K = -100.15 °C
Kelvin to Celsius Examples
0 K is equal to -273.15 °C. Using the formula K − 273.15, 0 K converts to -273.15 °C.
77 K is equal to -196.15 °C. Using the formula K − 273.15, 77 K converts to -196.15 °C.
100 K is equal to -173.15 °C. Using the formula K − 273.15, 100 K converts to -173.15 °C.
173 K is equal to -100.15 °C. Using the formula K − 273.15, 173 K converts to -100.15 °C.
233 K is equal to -40.15 °C. Using the formula K − 273.15, 233 K converts to -40.15 °C.
253 K is equal to -20.15 °C. Using the formula K − 273.15, 253 K converts to -20.15 °C.
273 K is equal to -0.15 °C. Using the formula K − 273.15, 273 K converts to -0.15 °C.
273.15 K is equal to 0 °C. Using the formula K − 273.15, 273.15 K converts to 0 °C.
Converting Celsius to Kelvin
Need the reverse conversion? Use the table below for a quick reference converting celsius back to kelvin.
| Celsius (°C) | Kelvin (K) |
|---|---|
| -273.15 | 0 |
| -100 | 173.15 |
| -40 | 233.15 |
| -20 | 253.15 |
| 0 | 273.15 |
| 10 | 283.15 |
Kelvin to Celsius FAQ
What is 0 Kelvin in Celsius?
0 Kelvin equals -273.15°C. This is absolute zero, the coldest possible temperature.
What is 273.15 K in Celsius?
273.15 K equals exactly 0°C, the freezing point of water.
What is room temperature in Kelvin?
Room temperature is approximately 293–298 K, which corresponds to 20–25°C.
Understanding Kelvin and Celsius
What is a Kelvin (K)?
The kelvin (K) is a unit of temperature in the metric system. It is commonly abbreviated as K and relates to celsius by a factor of -272.15.
What is a Celsius (°C)?
The celsius (°C) is a unit of temperature in the metric system. It is commonly abbreviated as °C and relates to kelvin by a factor of 274.15.