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Celsius to Kelvin Converter

Convert Celsius (°C) to Kelvin (K) instantly. Free online temperature converter with formula, examples, and common reference values.

Last Updated: May 2026
0.000621

Here's your answer

Conversion Summary

1 Meters = 0.000621 Miles

How to Convert Celsius to Kelvin

To convert from Celsius (°C) to Kelvin (K), apply the following formula:

K = °C + 273.15

Example: 0°C = 273.15 K

Quick Reference Table

Common celsius to kelvin conversions:

Celsius (°C)Kelvin (K)
1 °C273.15 K
2 °C546.3 K
5 °C1365.75 K
10 °C2731.5 K
25 °C6828.75 K
50 °C13657.5 K
100 °C27315 K
250 °C68287.5 K
500 °C136575 K
1000 °C273150 K

Use our converter above for precise values at any input.

About Celsius and Kelvin

Celsius (°C) and Kelvin (K) are both temperature units used in different measurement systems around the world. Our free converter lets you convert any value between them instantly without needing to remember the conversion factor.

Frequently Asked Questions

How do I convert Celsius to Kelvin?

To convert Celsius to Kelvin, use the formula: K = °C + 273.15. For example: 0°C = 273.15 K.

How many Kelvin are in 1 °C?

The exact conversion factor from Celsius to Kelvin is defined by the formula: K = °C + 273.15. Use our converter above to get instant results for any value.

Is this celsius to kelvin conversion exact?

Yes. Our converter uses the precise international conversion factor. All temperature conversions are performed to full floating-point precision in your browser with no rounding errors.

Can I convert Kelvin back to Celsius?

Yes — simply select the reverse direction in the Unit Converter, or use our dedicated reverse converter. You can also swap the units directly in the calculator above.

Does this converter work offline?

Once the page loads, all calculations are performed locally in your browser using JavaScript. No data is sent to our servers, so it works with or without an internet connection.

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