Convert Celsius (°C) to Kelvin (K)
Convert Celsius (°C) to Kelvin (K): add 273.15, since the scales share the same degree size. So 25 °C = 298.15 K. The standard scientific temperature conversion.
Formula
1 °C = 274.15 K
To convert °C to K, Celsius to Kelvin.
Conversion Table
| Celsius (°C) | Kelvin (K) |
|---|---|
| 0.01 °C | 273.16 K |
| 0.1 °C | 273.25 K |
| 0.5 °C | 273.65 K |
| 1 °C | 274.15 K |
| 2 °C | 275.15 K |
| 3 °C | 276.15 K |
| 5 °C | 278.15 K |
| 10 °C | 283.15 K |
| 15 °C | 288.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 50 °C | 323.15 K |
| 100 °C | 373.15 K |
| 250 °C | 523.15 K |
| 500 °C | 773.15 K |
| 1000 °C | 1273.15 K |
| 2500 °C | 2773.15 K |
| 5000 °C | 5273.15 K |
| 10000 °C | 10273.15 K |
| 50000 °C | 50273.15 K |
Common °C to K Examples
- 1 °C = 274.15 K
- 5 °C = 278.15 K
- 10 °C = 283.15 K
- 25 °C = 298.15 K
- 50 °C = 323.15 K
- 100 °C = 373.15 K
- 500 °C = 773.15 K
- 1000 °C = 1273.15 K
About °C to K
Kelvin is the SI temperature unit and starts at absolute zero, the coldest possible temperature. A one-degree change is identical in both scales, so K = °C + 273.15 — for example 0 °C = 273.15 K and 100 °C = 373.15 K.
Unlike Celsius, Kelvin has no negative values and no degree symbol. It is used throughout physics, chemistry and engineering, where absolute temperature matters in gas laws, thermodynamics and the colour temperature of light.
Frequently Asked Questions
What is the formula to convert °C to K?
The formula is 1 °C = 274.15 K. To convert any value, Celsius to Kelvin.
How much is 1 °C in K?
1 °C equals 274.15 K. This ratio applies to every conversion between the two units.
Is the conversion from °C to K exact?
The ratio 274.15 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 °C to K by hand?
Take the value in °C and Celsius to Kelvin. The result is the same value expressed in K.
Can I convert K back to °C?
Yes. Simply invert the ratio: divide the K value by 274.15 to get the equivalent in °C.
How many decimal places should I keep when converting °C to K?
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.