ToolNestKelvin to Celsius Converter
Convert kelvin to celsius instantly with our free temperature converter. 273.15 K = 0 °C — type any value below and the result updates live.
Kelvin to Celsius Formula
°C = K − 273.15 (K = °C + 273.15)
Room temperature (~20 °C) is about 293 K. Scientists use Kelvin because it starts at absolute zero.
Kelvin to Celsius Conversion Table
| Kelvin | Celsius | |
|---|---|---|
| 0 K | = | -273.15 °C |
| 100 K | = | -173.15 °C |
| 273.15 K | = | 0 °C |
| 293.15 K | = | 20 °C |
| 373.15 K | = | 100 °C |
| 1,000 K | = | 726.85 °C |
About Kelvin and Celsius
Kelvin is the absolute temperature scale starting at absolute zero (0 K = −273.15 °C). The SI unit used in physics and engineering.
Celsius sets 0° at water's freezing point and 100° at boiling (at sea level). The metric standard used by science and nearly every country.
Frequently Asked Questions
What is the formula to convert kelvin to celsius?
°C = K − 273.15. To convert back, use K = °C + 273.15.
273.15 K = 0 °C — how do I convert other values?
Type any value into the converter above; it applies the offset formula automatically, handling the different zero points of the two scales.
Why can't I just multiply to convert temperature?
Because kelvin and celsius start at different zero points. Room temperature (~20 °C) is about 293 K. Scientists use Kelvin because it starts at absolute zero.
Where is kelvin-to-celsius conversion used?
Kelvin is the absolute temperature scale starting at absolute zero (0 K = −273.15 °C). The SI unit used in physics and engineering. Celsius sets 0° at water's freezing point and 100° at boiling (at sea level). The metric standard used by science and nearly every country.