Celsius to Kelvin Converter
Convert Celsius to Kelvin instantly. Enter a temperature in °C and get the Kelvin value. Free, instant, no sign-up.
Your result will appear here.
How to use Celsius to Kelvin Converter
- Enter a temperature in degrees Celsius.
- Click Convert to see the Kelvin value.
- Copy the result or convert another temperature.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What is 25 °C in Kelvin?
25 °C equals 298.15 K. Add 273.15 to any Celsius temperature to get Kelvin.
What is absolute zero in Celsius?
Absolute zero is -273.15 °C, which equals 0 K — the lowest possible temperature. The converter will warn you if you enter a value below it.
Why do scientists use Kelvin?
Kelvin starts at absolute zero and has no negative values, which makes gas laws and other physics formulas work cleanly.
Is this Celsius to Kelvin converter free?
Yes, it is 100% free with no sign-up, and it runs entirely in your browser.