🌡️ Temperature
Celsius to Kelvin Converter
Convert Celsius to Kelvin instantly with a reference conversion table.
Celsius to Kelvin
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Common conversions
| Celsius | Kelvin |
|---|
Formula:
How to convert Celsius to Kelvin
1
Enter your value
Type the number of celsius you want to convert into the left box. The result in kelvin appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Kelvin to Celsius. Your current value carries across so you don't have to re-enter anything.
3
About Celsius and Kelvin
Celsius and Kelvin are common temperature measurements.
Reviewed for 2026. Celsius ↔ Kelvin conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.
Frequently asked questions
How do I convert Celsius to Kelvin?
Use the calculator above to convert Celsius to Kelvin instantly.
How many Kelvin are in 1 Celsius?
Use the calculator above to find the exact conversion.
Is the Celsius to Kelvin converter free?
Yes, the Celsius to Kelvin converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.