Among the other temperature scales, Celius is one of the most used and famous temperature scales. Because we use it as a common temperature scale by the people who are using the SI unit system. Also, let’s take a closer look at the Celsius temperature scale.

## What is Celsius?

Firstly, Celsius temperature scale is named after a Swedish Astronomer Anders Celsius which is defined according to the triple point of the water in 1 atm pressure. On the Celsius temperature scale, they defined as the triple point of water where gas, liquid, and fluid phases of water can exist at the same time. We define the 1°C of temperature scales according to the 1/273,16 of the difference between absolute zero and the triple point of the water.

Furthermore, the 100°C scales of the boiling point of the water and freezing point of the water are proposed by Anders Sanders and it is accepted as the SI norm.

## Temperature Conversions

In general, there are 4 temperature scales that people use in the world both and in scientific calculations and studies. Also, these 4 main temperature scales are; Celsius, Fahrenheit, Kelvin, and Rankine. Conversions between these temperature scales are very important and used by people.

### Temperature Conversions of Kelvin

**Kelvin** is the scientific temperature scale that people use in the SI unit system. So, temperature conversion between Kelvin and Celius is the most used conversion type. It is very simple;

°K = °C + 273.15

To find the Kelvin temperature equivalent to Celsius, you just need to add 273.15 to the Celcius. So, in the opposite direction, you just need to subtract 273.15 from Kelvin to find Celsius.

### Fahrenheit to Celsius Conversions

**Fahrenheit **is a common temperature scale that we use in the English customary system. Also, it is equivalent temperature scale of the Celsius in US Customary system. The conversion between the Fahrenheit and the Celsius is very simple;

°C = (°F – 32) / 1.8

Also, if you want to find the Celsius equivalent of a Fahrenheit temperature, you just need to subtract 32 from the Fahrenheit and divide this value by 1.8. And also, if you want to make the opposite, you need to multiply the Celsius by 1.8 and add 32 to it.

### Rankine to Celsius Temperature Conversion

Rankine is the temperature that we mostly use in scientific studies and calculations in the English unit system. So, if you are an SI unit user person who is dealing with scientific calculations in the English system, you will use this conversion between Rankine and Celsius which is very easy;

°C = (°R – 491.67) × 5/9

Furthermore, according to this calculation, you need to subtract 491.67 from Rankine temperature and you need to multiply this value by 5/9 to find the Celsius equivalent of it. To make the opposite calculation, you need to divide the Celsius temperature by 5/9 and add 491.67 to this value to find the Fahrenheit temperature equivalent.

## Conclusion

So, the general aspects of the Celsius temperature scale are like those above.

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