Convert Kelvin to Celsius
Turn Kelvin into Celsius in an instant. Type a value below to get an accurate K → °C result, with the formula and a quick-reference table.
1 K = -272.15 °C
Quick answer: 1 Kelvin = -272.15 Celsius
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 1 K | -272.15 °C |
| 2 K | -271.15 °C |
| 5 K | -268.15 °C |
| 10 K | -263.15 °C |
| 20 K | -253.15 °C |
| 50 K | -223.15 °C |
| 100 K | -173.15 °C |
| 500 K | 226.85 °C |
| 1,000 K | 726.85 °C |
How to convert Kelvin to Celsius
- Enter the value in Kelvin in the converter above.
- It applies the exact K → °C formula instantly.
- Read the converted result in Celsius.
For example, the freezing point of water is about 273.15 K, which is 0 °C.
About Kelvin and Celsius
The kelvin is the SI base unit of temperature, starting at absolute zero (0 K = −273.15 °C). It is used in science and engineering, where an absolute scale matters.
Celsius is the everyday metric temperature scale, with water freezing at 0° and boiling at 100° at sea level. It is used for weather, cooking and body temperature almost everywhere outside the US.
The Kelvin and the Celsius are different scales, so the converter applies the exact K → °C formula — handling any offset between them — to give an accurate result every time.
Other temperature conversions
Frequently asked questions
How many Celsius are in a Kelvin?
1 Kelvin converts to -272.15 Celsius (K → °C). For any other amount, enter it in the converter above — it applies the exact K → °C formula instantly, with full precision.
How do I convert Kelvin to Celsius?
Enter the number of Kelvin in the converter above and read the result in Celsius. It applies the exact K → °C factor instantly, with full precision.
Is the Kelvin to Celsius converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined temperature factors and full floating-point precision, then rounds the display to a clean, readable number.