Celsius to Kelvin Calculator
Enter a temperature in Celsius to convert it to Kelvin.
Celsius to Kelvin Calculator
Convert a temperature from Celsius to Kelvin by adding the offset between the two scales.
This calculator provides an estimate for general informational purposes only. It is not a substitute for professional financial, mechanical or engineering advice.
Kelvin and Celsius use the same size degree, so converting between them is a simple addition of 273.15 to shift from Celsius's water-freezing zero point to Kelvin's absolute-zero zero point.
Example
- With the default values shown above, this calculator returns: Temperature (K) ≈ 298.15.
Frequently Asked Questions
What is the formula?
K = °C + 273.15.
Why 273.15?
That's the offset between the Celsius scale's zero point (freezing water) and absolute zero, which is 0 K by definition — Kelvin and Celsius are the same size scale, just shifted.