Celsius to Kelvin Converter

Express a Celsius temperature on the kelvin scale by adding the exact 273.15 offset. Enter a temperature reading, rather than a temperature change.

How to use Celsius to Kelvin Converter

1. Enter Celsius. 2. Ordinary temperature conversion on the stated Celsius/Fahrenheit/Kelvin basis, subject to its supported lower bound and output range. 3. Select Convert or press Enter from a single-line field. In multiline text fields, Enter inserts a line break. 4. Select Copy result to copy the answer, or Reset to clear the form and result.

Why use this tool?

Use Celsius to Kelvin Converter when you need kelvin. Ordinary temperature conversion on the stated Celsius/Fahrenheit/Kelvin basis, subject to its supported lower bound and output range.

How the calculation works

Kelvin = Celsius + 273.15. The Celsius-to-kelvin offset is exactly 273.15. One degree Celsius of temperature difference has the same magnitude as one kelvin. Ordinary temperature conversion on the stated Celsius/Fahrenheit/Kelvin basis, subject to its supported lower bound and output range.

Example

Worked example: Celsius = 20. Result: 293.15 K.

Practical tip

Write the unit as K, without a degree sign. This tool supports ordinary non-negative kelvin temperatures; specialised negative-temperature physics is outside its scope.