Degree Celsius to Kelvin Converter
0 °C is 273.15 K. Convert degrees Celsius (°C) to kelvins (K) below: type a value and the result updates as you type.
°C to K calculator
Result
Degree Celsius to Kelvin conversion
1 °C = 274.15 Kone degree Celsius in kelvins
1 K = -272.15 °Cone kelvin in degrees Celsius
Degree Celsius (°C): Same size as the kelvin; 0 °C is exactly 273.15 K.
Kelvin (K): SI base unit of thermodynamic temperature, defined by fixing the Boltzmann constant k = 1.380649e-23 J/K.
Source:SI Brochure, 9th edition (BIPM, 2019)
How to convert degrees Celsius to kelvins
To convert degrees Celsius to kelvins, add 273.15.
Formula
K = °C + 273.15
Examples
- 0 °C = 0 + 273.15 = 273.15 K
- 25 °C = 25 + 273.15 = 298.15 K
- 100 °C = 100 + 273.15 = 373.15 K
Degree Celsius to Kelvin conversion table
| Degree Celsius (°C) | Kelvin (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 |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 30 °C | 303.15 K |
| 37 °C | 310.15 K |
| 40 °C | 313.15 K |
| 50 °C | 323.15 K |
| 100 °C | 373.15 K |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- What is 0 °C in K?
- 0 °C is 273.15 K. To convert degrees Celsius to kelvins, add 273.15.
- How do I convert kelvins to degrees Celsius?
- To convert kelvins to degrees Celsius, subtract 273.15. The formula is °C = K − 273.15.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1 is exact. Displayed results are only rounded when they have many decimal places.