Kelvin to Celsius Converter

Use our Kelvin to Celsius converter to quickly and accurately convert temperature from kelvin (K) to degrees Celsius (°C). Enter a temperature in kelvin in the calculator above to instantly find the equivalent temperature in Celsius.

How to Convert Kelvin to Celsius

To convert kelvin to degrees Celsius, subtract 273.15 from the temperature in kelvin.

Formula

°C = K − 273.15

Example:

If you have 300 K:

300 − 273.15 = 26.85

So, 300 K = 26.85 °C.

Kelvin to Celsius Conversion Chart

Common Kelvin to Celsius Conversions

• 0 K = -273.15 °C
• 100 K = -173.15 °C
• 273.15 K = 0 °C
• 300 K = 26.85 °C
• 310.15 K = 37 °C
• 373.15 K = 100 °C

Practical Use

Kelvin and Celsius are both temperature scales used in science, engineering, weather, and technical applications. Kelvin is the base unit of thermodynamic temperature in the International System of Units (SI), while degrees Celsius are widely used for everyday temperatures, weather, laboratory work, and scientific reporting.

A Kelvin to Celsius converter is especially useful when translating scientific or technical temperature values into the more familiar Celsius scale.

Frequently Asked Questions About Kelvin to Celsius

How do you convert Kelvin to Celsius?
Subtract 273.15 from the temperature in kelvin. The formula is °C = K − 273.15.

What is 0 Kelvin in Celsius?
0 K = -273.15 °C. This temperature is known as absolute zero.

What is 273.15 Kelvin in Celsius?
273.15 K = 0 °C.

What is 300 Kelvin in Celsius?
300 K = 26.85 °C.

What is 373.15 Kelvin in Celsius?
373.15 K = 100 °C.

Does Kelvin use a degree symbol?
No. Kelvin is written using the symbol K, not °K. Celsius temperatures use the degree symbol and are written °C.

Can Kelvin temperatures be negative?
Not on the thermodynamic Kelvin scale. 0 K is absolute zero, so temperatures cannot be lower than 0 K. This Kelvin to Celsius converter therefore accepts Kelvin values of 0 or greater.

When You Might Need to Convert Kelvin to Celsius

Converting kelvin to Celsius is useful when scientific or technical temperature data is expressed in kelvin but needs to be interpreted using the more familiar Celsius scale.

A kelvin to Celsius conversion can be especially useful for:

• Scientific research — interpreting temperatures used in physics, chemistry, astronomy, and other sciences.
• Laboratory work — converting experimental and measurement data between temperature scales.
• Engineering — working with technical specifications, thermodynamics, and temperature-dependent calculations.
• Physics and thermodynamics — translating absolute-temperature measurements into Celsius values.
• Astronomy and space science — interpreting temperatures of stars, planets, gases, and other astronomical objects.
• Education — solving science and engineering problems involving Kelvin and Celsius temperatures.

Using an accurate Kelvin to Celsius converter makes it easy to translate temperatures from kelvin (K) into degrees Celsius (°C).

About Kelvin and Celsius

Kelvin (K) is the SI unit of thermodynamic temperature and is widely used in science, physics, chemistry, engineering, and other technical fields. The Kelvin scale begins at absolute zero (0 K), the lowest possible thermodynamic temperature. Unlike Celsius, kelvin values are written without a degree symbol.

Celsius (°C) is a temperature scale widely used around the world for weather, cooking, everyday temperature measurements, laboratory work, and scientific applications. On the Celsius scale, 0 °C corresponds to the freezing point of water under standard reference conditions, while 100 °C corresponds approximately to its boiling point at standard atmospheric pressure.

The Kelvin and Celsius scales use the same size interval—a change of 1 K is equal in magnitude to a change of 1 °C. The difference between the scales is their zero points:

0 K = -273.15 °C

273.15 K = 0 °C

Therefore, converting between them requires an offset rather than a multiplication factor:

°C = K − 273.15

This Kelvin to Celsius converter specifically converts temperatures from kelvin (K) to degrees Celsius (°C).

For additional information about metric measurement and SI units, visit the U.S. National Institute of Standards and Technology (NIST).

Understanding the difference between these temperature scales is especially useful when working with scientific, engineering, or technical information. Kelvin (K) is the SI unit of thermodynamic temperature and is commonly used in scientific calculations, while degrees Celsius (°C) are widely used for everyday temperatures and many scientific applications. Whether you are analyzing laboratory data, reviewing engineering specifications, studying thermodynamics, or interpreting scientific measurements, an accurate Kelvin to Celsius conversion helps ensure that you are working with the correct temperature value.

For fast and accurate results, use our Kelvin to Celsius converter whenever you need to compare temperature measurements between kelvin (K) and degrees Celsius (°C).

Convert Celsius to Kelvin

Need to convert in the opposite direction? Use our Celsius to Kelvin Converter to quickly convert degrees Celsius (°C) into kelvin (K).

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