Convert Kelvin to Celsius
Convert kelvin to celsius instantly. Type a value below, check the formula and table, then see how the same K to °C conversion looks as a single line in Notes Calculator.
Kelvin to Celsius formula
Kelvin and celsius do not share a zero point, so the conversion is a formula rather than a single factor: °C = K − 273.15. For the reverse, use the Celsius to Kelvin converter.
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| -40 | -313.15 |
| -20 | -293.15 |
| 0 | -273.15 |
| 10 | -263.15 |
| 20 | -253.15 |
| 25 | -248.15 |
| 30 | -243.15 |
| 37 | -236.15 |
| 40 | -233.15 |
| 50 | -223.15 |
| 100 | -173.15 |
Kelvin to Celsius in Notes Calculator
Notes Calculator is a notepad that does math. Write 25 kelvin to celsius 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 kelvin and celsius without a separate converter.
| Note | Result |
|---|---|
| 25 kelvin to celsius | -248.15 °C |
| 25 kelvin in celsius | -248.15 °C |
| 10 celsius as kelvin | 283.15 K |
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 K is -263.15 °C. The relationship is not a simple ratio, so use the formula °C = K − 273.15 or the converter above.
- Type the value, the unit, and the target unit on one line: 25 kelvin to celsius. 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 celsius are in one kelvin?
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