Convert Kelvin (K) to Celsius (°C)
Convert Kelvin (K) to Celsius (°C): subtract 273.15, since the degree size is the same in both scales. So 300 K = 26.85 °C. The everyday readout of an absolute temperature.
Formula
1 K = -272.15 °C
To convert K to °C, Kelvin to Celsius.
Conversion Table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0.01 K | -273.14 °C |
| 0.1 K | -273.05 °C |
| 0.5 K | -272.65 °C |
| 1 K | -272.15 °C |
| 2 K | -271.15 °C |
| 3 K | -270.15 °C |
| 5 K | -268.15 °C |
| 10 K | -263.15 °C |
| 15 K | -258.15 °C |
| 20 K | -253.15 °C |
| 25 K | -248.15 °C |
| 50 K | -223.15 °C |
| 100 K | -173.15 °C |
| 250 K | -23.15 °C |
| 500 K | 226.85 °C |
| 1000 K | 726.85 °C |
| 2500 K | 2226.85 °C |
| 5000 K | 4726.85 °C |
| 10000 K | 9726.85 °C |
| 50000 K | 49726.85 °C |
Common K to °C Examples
- 1 K = -272.15 °C
- 5 K = -268.15 °C
- 10 K = -263.15 °C
- 25 K = -248.15 °C
- 50 K = -223.15 °C
- 100 K = -173.15 °C
- 500 K = 226.85 °C
- 1000 K = 726.85 °C
About K to °C
Because the scales differ only by their zero point, °C = K − 273.15 — for example 273.15 K = 0 °C and 310 K is about 36.85 °C.
Kelvin starts at absolute zero and is used in science; Celsius is the familiar everyday scale. Subtracting 273.15 turns an absolute temperature — from physics, lighting colour temperature or cryogenics — into a value you can relate to.
Frequently Asked Questions
What is the formula to convert K to °C?
The formula is 1 K = -272.15 °C. To convert any value, Kelvin to Celsius.
How much is 1 K in °C?
1 K equals -272.15 °C. This ratio applies to every conversion between the two units.
Is the conversion from K to °C exact?
The ratio -272.15 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.
How do I convert K to °C by hand?
Take the value in K and Kelvin to Celsius. The result is the same value expressed in °C.
Can I convert °C back to K?
Yes. Simply invert the ratio: divide the °C value by -272.15 to get the equivalent in K.
How many decimal places should I keep when converting K to °C?
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.