Celsius to Kelvin Converter
Convert Celsius temperatures to Kelvin with a direct formula. This calculator is useful for chemistry, physics, engineering, laboratory calculations, and other situations where an absolute temperature scale is required.
Quick Answer
Kelvin = Celsius + 273.15
To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. For example, 25°C + 273.15 = 298.15 K.
Why Convert Celsius to Kelvin?
Kelvin is an absolute temperature scale and is commonly used in scientific equations involving gases, thermodynamics, and energy. A change of 1°C has the same size as a change of 1 K, but the zero points are different.
Using the Formula
Simply add 273.15 to the Celsius value. The result should be expressed in kelvins without a degree symbol. Celsius temperatures below −273.15°C are outside the physically meaningful Kelvin range.
Examples
0°C = 273.15 K.
20°C = 293.15 K.
25°C = 298.15 K.
100°C = 373.15 K.
Quick Reference
- 1°C change equals 1 K change.
- Kelvin uses no degree symbol.
- Absolute zero is 0 K, equivalent to −273.15°C.