Convert degrees Celsius to kelvins
Converting degrees Celsius to kelvins is a common temperature task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 °C equals 274.15 K, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert degrees Celsius to kelvins
Apply the formula K = °C + 273.15. For example, 10 °C equals 283.15 K.
K = °C + 273.15
- Write down the value in degrees Celsius you want to convert.
- Apply the formula: K = °C + 273.15.
- The result is your value in kelvins. Verify it with the converter above.
Conversion table
Common values of degrees Celsius and their equivalents in kelvins:
| °C | K |
|---|---|
| -40 | 233.15 |
| -20 | 253.15 |
| -10 | 263.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 50 | 323.15 |
| 75 | 348.15 |
| 100 | 373.15 |
About these units
Celsius (°C). The Celsius scale sets water's freezing point at 0° and boiling point at 100° at standard pressure. It is the everyday temperature scale in most of the world and is aligned with Kelvin.
Kelvin (K). The kelvin is the SI base unit of temperature, starting at absolute zero (−273.15 °C), the point where thermal motion stops. It is used in physics, chemistry and engineering.
Frequently asked questions
How do I convert degrees Celsius to kelvins?
Apply the formula K = °C + 273.15. For example, 10 °C equals 283.15 K. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kelvins are in 1 celsius?
1 °C = 274.15 K. That is the fixed relationship used by this converter and by international standards.
How many degrees Celsius are in 1 kelvin?
1 K = -272.15 °C. If you are converting in the opposite direction, use our Kelvin to Celsius converter for the dedicated table and FAQ.
Is the degrees Celsius to kelvins conversion exact?
Yes. The formulas between Celsius, Fahrenheit and Kelvin are exact by definition, so results are as precise as you need. Only the displayed digits are rounded for readability.
What is celsius used for?
The Celsius scale sets water's freezing point at 0° and boiling point at 100° at standard pressure. It is the everyday temperature scale in most of the world and is aligned with Kelvin.