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Kelvin to Celsius Converter

Convert Kelvin to Celsius instantly: 0 kelvin = -273.15 Celsius. Free kelvin to celsius converter with formula, chart and examples.

0 kelvin = -273.15 Celsius

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How to Convert Kelvin to Celsius

The formula is °C = K − 273.15. 0 kelvin = -273.15 Celsius. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for kelvin to Celsius conversions, but you can switch either list to any of the 6 units in the Temperature Converter, or go the other way with the Celsius to Kelvin converter.

Kelvin to Celsius conversion chart

KelvinCelsius
0 K-273.15 °C
25 K-248.15 °C
50 K-223.15 °C
75 K-198.15 °C
100 K-173.15 °C
125 K-148.15 °C
150 K-123.15 °C
175 K-98.15 °C
200 K-73.15 °C
225 K-48.15 °C
250 K-23.15 °C
273.15 K0 °C
275 K1.85 °C
300 K26.85 °C
325 K51.85 °C
350 K76.85 °C
373.15 K100 °C
375 K101.85 °C
400 K126.85 °C
425 K151.85 °C
450 K176.85 °C
475 K201.85 °C
500 K226.85 °C
525 K251.85 °C
550 K276.85 °C
575 K301.85 °C
600 K326.85 °C
625 K351.85 °C
650 K376.85 °C
675 K401.85 °C
700 K426.85 °C
1,000 K726.85 °C

Common Kelvin to Celsius conversions

  • 0 kelvin = -273.15 Celsius
  • 0 K = -273.15 °C
  • 273.15 K = 0 °C
  • 300 K = 26.85 °C
  • 373.15 K = 100 °C
  • 1,000 K = 726.85 °C

Popular temperature converters

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How to Use the Kelvin to Celsius Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How do I convert Kelvin to Celsius?

Use the formula °C = K − 273.15. For example, 0 kelvin = -273.15 Celsius. Or type the value in the converter above and the answer appears as you type.

What is the Kelvin to Celsius formula?

°C = K − 273.15.

What is 0 kelvin in Celsius?

0 kelvin = -273.15 Celsius.

What is 273.15 kelvin in Celsius?

273.15 kelvin = 0 Celsius.

What is 300 kelvin in Celsius?

300 kelvin = 26.85 Celsius.

What is 373.15 kelvin in Celsius?

373.15 kelvin = 100 Celsius.

What is 1,000 kelvin in Celsius?

1,000 kelvin = 726.85 Celsius.

How do I convert Celsius back to Kelvin?

Use the swap button in the converter above, or open our Celsius to Kelvin converter. K = °C + 273.15.

Is this Kelvin to Celsius converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert Kelvin to other temperature units?

Yes — pick any unit in the From and To lists above, or open the full Temperature Converter, which handles 6 temperature units.

Is the Kelvin to Celsius converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.