Celsius to Kelvin
Convert temperatures from Celsius to Kelvin with visual comparison
Kelvin (K)
273.15 K
K = °C + 273.15
About this calculator
Convert Celsius to Kelvin by adding 273.15 to any Celsius temperature. Kelvin is the SI base unit for temperature used in scientific research, where 0 K represents absolute zero — the lowest possible temperature.
How to use the Celsius to Kelvin converter
- Enter your value into the input field.
- Read the converted result.
- Adjust the input to try other values instantly.
- Copy the page URL to share the exact conversion.
Common examples
- 0°C = 273.15 K — freezing point of water
- 100°C = 373.15 K — boiling point of water
- -273.15°C = 0 K — absolute zero
- 25°C = 298.15 K — standard room temperature
- 37°C = 310.15 K — human body temperature
Frequently asked questions
How does the Celsius to Kelvin converter work?
Enter a value in the source unit and the calculator applies the standard conversion factor (or temperature formula, where relevant) to give you the equivalent value in the target unit. The result updates as you type.
When would I use a Celsius to Kelvin converter?
Whenever you need to translate a quantity between two units of measurement — common cases include travel, cooking, shipping, engineering, science homework, and reading product specifications written in a different system.
How accurate is the Celsius to Kelvin converter?
Conversions use the standard definitions of each unit and full-precision arithmetic. The displayed value is rounded for readability, but the underlying calculation keeps higher precision so repeated conversions do not drift.
Can I share a specific conversion with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same conversion for whoever clicks it.