Celsius to Kelvin Converter
Convert Celsius to Kelvin instantly — K = °C + 273.15, with every other temperature unit, a conversion chart, and a list mode for many values.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
Formula: K = °C + 273.15
| Celsius | Kelvin |
|---|---|
| 1 °C | 274.15 K |
| 2 °C | 275.15 K |
| 5 °C | 278.15 K |
| 10 °C | 283.15 K |
| 20 °C | 293.15 K |
| 50 °C | 323.15 K |
| 100 °C | 373.15 K |
How to convert Celsius to Kelvin
- Type the number of Celsius.
- Read the result in Kelvin — and in every other unit below it.
- Swap, change the precision, convert a whole list or copy and share the result.
About Celsius to Kelvin Converter
Convert Celsius to Kelvin as you type. The result appears instantly with the exact formula, and the same value is shown in every other unit of the category at once — so one page answers all related questions.
A conversion chart lists common values, “Convert a list” handles a whole column of numbers, and you can choose the number of decimals or scientific notation. Swap the units with one click, share a link to your conversion, or print it.
Good for
- Everyday conversions for travel, shopping and recipes
- School and science homework
- Work with specifications and measurements
Tip: Type an expression like a whole column of values in “Convert a list” to convert them all at once.
Frequently asked questions
How do I convert Celsius to Kelvin?
Use K = °C + 273.15. For example, 25 °C = 298.15 K.
Can I convert many values at once?
Yes — choose “Convert a list”, paste one value per line (a spreadsheet column works) and copy all the results.
Can I convert to other units too?
Yes. Pick any units in the From and To lists, or switch the category — length, weight, temperature, volume, area, speed, data and more.
What is absolute zero?
The lowest possible temperature: 0 K, −273.15 °C or −459.67 °F. The converter warns you if a value is below it.
What are some common °C to K values?
-273.15 °C = 0 K, 0 °C = 273.15 K, 25 °C = 298.15 K and 100 °C = 373.15 K.