Convert Celsius to Kelvin
Convert celsius to kelvin instantly. Type a value below, check the formula and table, then see how the same °C to K conversion looks as a single line in Notes Calculator.
Celsius to Kelvin formula
Celsius and kelvin do not share a zero point, so the conversion is a formula rather than a single factor: K = °C + 273.15. For the reverse, use the Kelvin to Celsius converter.
Celsius to Kelvin conversion table
| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -20 | 253.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 37 | 310.15 |
| 40 | 313.15 |
| 50 | 323.15 |
| 100 | 373.15 |
Celsius to Kelvin in Notes Calculator
Notes Calculator is a notepad that does math. Write 25 celsius to kelvin on any line and the answer appears beside it. Change the number and the result follows. The same works with in and as, and with values stored in variables, so a whole estimate can mix celsius and kelvin without a separate converter.
| Note | Result |
|---|---|
| 25 celsius to kelvin | 298.15 K |
| 25 celsius in kelvin | 298.15 K |
| 10 kelvin as celsius | -263.15 °C |
See the unit conversion docs for mixing units in one expression, or open the free web app and try it.
More temperature conversions
FAQ
Frequently asked questions
- 10 °C is 283.15 K. The relationship is not a simple ratio, so use the formula K = °C + 273.15 or the converter above.
- Type the value, the unit, and the target unit on one line: 25 celsius to kelvin. The keywords to, in, and as all work, and the result updates as you type. You can also keep the value in a variable and convert it later.
- Yes. The converter on this page is free, and Notes Calculator has a free plan for the web, Mac, Windows, Linux, and Android with the same unit conversions built in.
How many kelvin are in one degree Celsius?
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