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Kelvin to Celsius Converter

Convert Kelvin (K) to Celsius (°C) instantly. Enter any value — result updates live.

Temperature Converter
Result
-272.1°C
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Formula: °C = K − 273.15

About converting Kelvin to Celsius

Converting Kelvin to Celsius is a common temperature conversion. One kelvin (K) equals -272.1 celsius (°C). Kelvin is the SI unit for thermodynamic temperature, used in physics and engineering.

This conversion is commonly needed for weather and travel planning, cooking and baking, scientific experiments. Celsius is used in most countries worldwide and in all scientific applications.

To put kelvin in perspective: absolute zero (0 K). In celsius, common references include a comfortable room (21 °C).

Did you know?

0 Kelvin (absolute zero) is theoretically the lowest possible temperature, where all molecular motion stops. It has never been fully achieved in a laboratory.

Real-world examples
Kelvin (K)
  • absolute zero (0 K)
  • liquid nitrogen (-196 °C or 77 K)
  • the Sun's surface (about 5,778 K)
Celsius (°C)
  • water freezes (0 °C)
  • a comfortable room (21 °C)
  • water boils (100 °C)
Did you know?

The Celsius scale was invented by Swedish astronomer Anders Celsius in 1742, but he originally set 0° as boiling and 100° as freezing — it was later reversed.

Common uses for temperature conversion

People frequently convert between kelvin and celsius for:

  • weather and travel planning
  • cooking and baking
  • scientific experiments
  • HVAC and home heating
  • industrial processes
Popular Kelvin to Celsius conversions
Kelvin (K)Celsius (°C)
1 K-272.1 °C
2 K-271.1 °C
5 K-268.1 °C
10 K-263.1 °C
15 K-258.1 °C
20 K-253.1 °C
25 K-248.1 °C
30 K-243.1 °C
50 K-223.1 °C
100 K-173.1 °C
200 K-73.15 °C
500 K226.9 °C
1000 K726.9 °C
More Kelvin conversions
Kelvin to FahrenheitK → °FKelvin to RankineK → °R
Frequently asked questions
How do you convert Kelvin to Celsius?
To convert Kelvin to Celsius, use the formula: °C = K − 273.15. For example, 1 K = -272.1 °C.
What is 1 Kelvin in Celsius?
1 K is equal to -272.1 °C.
How many kelvin are in 1 celsius?
1 °C is equal to 274.1 K. To convert Celsius back to Kelvin, multiply the celsius value by 274.1.
When would I need to convert kelvin to celsius?
This conversion is commonly needed for HVAC and home heating, industrial processes, weather and travel planning. Kelvin is the SI unit for thermodynamic temperature, used in physics and engineering. Celsius is used in most countries worldwide and in all scientific applications.
What does 1 kelvin look like in real life?
For reference, a typical kelvin measurement is the Sun's surface (about 5,778 K). So 1 K (-272.1 °C) gives you a practical sense of scale.