Convert Celsius to Kelvin
Convert Celsius to Kelvin using K = °C + 273.15. Enter a temperature to see the result instantly.
Convert Celsius to Kelvin
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Conversion formula
Use the formula K = °C + 273.15. For example, 25°C = 298.15K.
Celsius to Kelvin table
About converting Celsius to Kelvin
Celsius (°C) and Kelvin (K) are temperature scales with different zero points, so they convert with a formula rather than a single multiplier: K = °C + 273.15.
Type any temperature above to convert it instantly. For the opposite direction, use the Kelvin to Celsius converter, or the full unit converter.
Frequently asked questions
What is the formula to convert Celsius to Kelvin?
K = °C + 273.15.
What is 25°C in Kelvin?
25°C equals 298.15K.
Is this Celsius to Kelvin converter accurate?
Yes — it applies the standard temperature formula and computes in your browser.