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Celsius to Kelvin Converter

Convert Celsius to Kelvin instantly with precise calculations

Celsius (°C)

Kelvin (K)

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📚 Examples, Formula, and How To

📝 Celsius to Kelvin Formula

Celsius to Kelvin

K = °C + 273.15

To convert Celsius to Kelvin, simply add 273.15. This accounts for the difference between absolute zero and the freezing point of water.

Kelvin to Celsius

°C = K - 273.15

To convert Kelvin to Celsius, simply subtract 273.15. This is because both scales have the same interval size, but different zero points.

💡 Converting Celsius to Kelvin

Example 1

Convert: 0°C to Kelvin

Start with the conversion formula: K = °C + 273.15

Substitute the value: K = 0 + 273.15

Calculate: K = 273.15

Result:273.15 K

Example 2

Convert: 100°C to Kelvin

Start with the conversion formula: K = °C + 273.15

Substitute the value: K = 100 + 273.15

Calculate: K = 373.15

Result:373.15 K

Example 3

Convert: 37°C to Kelvin

Start with the conversion formula: K = °C + 273.15

Substitute the value: K = 37 + 273.15

Calculate: K = 310.15

Result:310.15 K

📊 Celsius to Kelvin Conversion Table

Common Celsius to Kelvin Conversions

Celsius	Kelvin
-273.15°C	0 K
-73.15°C	200 K
-23.15°C	250 K
0°C	273.15 K
20°C	293.15 K
37°C	310.15 K
100°C	373.15 K
126.85°C	400 K

All values are rounded to 4 decimal places for practical use

⚙️ How to Convert Celsius to Kelvin

Temperature Scales

Celsius and Kelvin use the same scale intervals

They differ only in their zero points - Kelvin starts at absolute zero.

Celsius to Kelvin

Add 273.15 to Celsius to get Kelvin

Enter a value in Celsius to convert to Kelvin.

Kelvin to Celsius

Subtract 273.15 from Kelvin to get Celsius

Enter a value in Kelvin to convert to Celsius.

📚 What are Celsius and Kelvin?

📏 Celsius(°C)

Definition:

Celsius is a temperature scale where the freezing point of water is 0°C and the boiling point is 100°C at standard atmospheric pressure.

History:

Created by Anders Celsius in 1742, originally with 0° as boiling point and 100° as freezing point. The scale was later inverted to its current form.

Common Uses:

Weather reports worldwide (except US)
Scientific measurements
Medical thermometers globally
Cooking in most countries
International standards and trade

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Fun Fact:

Anders Celsius originally had his scale backwards - 0° was boiling and 100° was freezing! It was flipped after his death. Room temperature is about 20°C, which is 68°F.

📏 Kelvin(K)

Definition:

Kelvin is the base unit of temperature in the International System of Units (SI). It starts at absolute zero and uses the same scale intervals as Celsius.

History:

Named after Lord Kelvin (William Thomson) in 1848. It's based on absolute zero, the theoretical temperature where all molecular motion ceases.

Common Uses:

Scientific research and calculations
Physics and chemistry laboratories
Astronomy and space science
Engineering thermodynamics
International scientific standards

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Fun Fact:

Kelvin is the only temperature scale that doesn't use degree symbols - we say '300 K', not '300°K'! Absolute zero (0 K) is the coldest possible temperature in the universe.