Kelvin to Celsius Converter
Convert kelvin to Celsius instantly — for science homework, lab work and weather science.
Formula used
How to use this converter
- Type the temperature in the first box.
- Choose the starting scale and the target scale.
- The converted temperature shows right away.
The formula
The kelvin scale starts at absolute zero. °C = K − 273.15. Example: 300 K − 273.15 = 26.85 °C — a warm day.
Quick conversion table
| Kelvin | Celsius | Note |
|---|---|---|
| 0 K | −273.15 °C | Absolute zero |
| 273.15 K | 0 °C | Water freezes |
| 300 K | 26.85 °C | Room temperature |
| 373.15 K | 100 °C | Water boils |
| 310 K | 36.85 °C | Human body |
Science classrooms across India
Every Indian school science textbook uses kelvin in physics and chemistry chapters — gas laws, thermodynamics, melting points. Students constantly convert K to °C for numericals. Remember the magic number 273.15 and the rest is subtraction.
Frequently asked questions
How do you convert kelvin to celsius?
Subtract 273.15: °C = K − 273.15.
What is 300K in celsius?
26.85 °C.
What is 0 kelvin in celsius?
−273.15 °C — absolute zero, the coldest possible temperature.
What is 273.15 K in °C?
Exactly 0 °C, the freezing point of water.