Convert Celcius (°C) to Kelvin (K) | °C in K

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Let's convert Celcius (°C) to Kelvin (K)

This quick and easy calculator will convert Celcius (°C) to Kelvin (K) and show formula, brief history on the units and quick maths for the conversion.

Enter Celcius to convert to Kelvin


Quick Reference for Converting Celcius to Kelvin

Formula
K = °C + 273.15
Quick Rough Maths
To get the Kelvin, take the Celcius and add 273
Celcius (°C) in 1 Kelvin
There are 1 Celcius in 1 Kelvin
Kelvin (K) in 1 Celcius
There are 1 Kelvin in 1 Celcius

Unit Information

Celcius
/ˈsɛlsɪəs/
Symbol: °C
Unit System: SI

What is the Celcius?

Celsius (or degrees Celsius) is a scale to measure temperature and is derived from an SI unit with the symbol °C.

Celsius is named after Anders Celsius and is a scale derived directly from the Kelvin scale and was established in 1742. Otherwise known as the centigrade scale, it is recognised and used worldwide.

The Celsius scale is exactly 273.15 below the Kelvin scale which is the SI unit for temperature.

Water melts just below 0 °C and boils just below 100 °C (assuming normal conditions). The Celsius scale is also commonly used to measure the weather (or atmospheric temperature) and body temperature to diagnose fever. A typical comfortable day is anywhere from 10 °C - 30 °C and a healthy body temperature is anywhere between 36.1 °C and 37.2 °C.

Degrees Celcius is measured using a thermometre.

Kelvin
/ˈkɛlvɪn/
Symbol: K
Unit System: SI

What is the Kelvin?

Kelvin is the SI base unit for temperature and is has the symbol K.

Kelvin is named after 1st Baron Kelvin, William Thomson who was born in Belfast and studied engineering and physics at Glasgow University.

The scale was based on Lord Kelvin's theory whereby a) there was a need for "absolute zero" or "infinite cold" to be represented by 0 and b) used degree Celsius to increment each unit.

The Kelvin has also been adapted to measure colour temperature and noise temperature; both with the capability to express amounts of "warmth". The photosphere of the sun, for example, has an effective colour temperature of 5778K.


Conversion Tables for Celcius (°C) to Kelvin (K)