Degrees Celsius to kelvins
1 degree Celsius = 274.15 kelvins
Type a value in degrees Celsius (°C) to get kelvins (K) straight away. Both units belong to temperature, measured here against the kelvin.
1 °C = 274.15 K
Formula
K = °C + 273.15
The degrees are the same size, so only the zero point moves: 0 °C is 273.15 K. Here °C is the value in degrees Celsius and K is the result in kelvins.
Worked example: 37 degrees Celsius: put 37 into K = °C + 273.15. The result is 310.15 kelvins.
Degrees Celsius to kelvins table
| degrees Celsius (°C) | kelvins (K) |
|---|---|
| -40 °C | 233.15 K |
| -20 °C | 253.15 K |
| -10 °C | 263.15 K |
| 0 °C | 273.15 K |
| 10 °C | 283.15 K |
| 15 °C | 288.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 30 °C | 303.15 K |
| 35 °C | 308.15 K |
| 37 °C | 310.15 K |
| 40 °C | 313.15 K |
| 50 °C | 323.15 K |
| 60 °C | 333.15 K |
| 70 °C | 343.15 K |
| 80 °C | 353.15 K |
| 90 °C | 363.15 K |
| 100 °C | 373.15 K |
Everyday degrees Celsius in kelvins
| What it is | °C | K |
|---|---|---|
| a home freezer | -18 °C | 255.15 K |
| a fridge | 4 °C | 277.15 K |
| room temperature | 20 °C | 293.15 K |
| body temperature | 37 °C | 310.15 K |
| a moderate oven | 180 °C | 453.15 K |
Quick estimate in your head
Add 273 to the °C value.
Watch out for
- Do not add 32 when converting a temperature difference; use only the 9/5 factor.
- Kelvin has no degree sign and never goes negative. 0 °C is 273.15 K.
About the units
Degree Celsius (°C). Water freezes at 0 °C and boils at 100 °C at sea level. Used for weather almost everywhere.
Kelvin (K). The SI temperature unit. 0 K is absolute zero; a 1 K step is the same size as 1 °C.
Going the other way, 1 kelvin is -272.15 degrees Celsius.
Questions
How many kelvins are in 1 degree Celsius?
1 degree Celsius is 274.15 kelvins, and 1 kelvin is -272.15 degrees Celsius.
How do I convert degrees Celsius to kelvins?
Use K = °C + 273.15. For example, 37 degrees Celsius: put 37 into K = °C + 273.15. The result is 310.15 kelvins.
At what temperature are Celsius and Fahrenheit equal?
At −40. −40 °C is exactly −40 °F, which is a quick way to check a formula.
How much is a moderate oven in kelvins?
180 °C is 453.15 K.
Source for the conversion factor: BIPM SI Brochure (kelvin and degree Celsius).
Related conversions
- kelvins to degrees Celsius
- degrees Celsius to degrees Fahrenheit
- degrees Fahrenheit to kelvins
- kelvins to degrees Fahrenheit
- degrees Fahrenheit to degrees Celsius