what is Normal Body Temperature In Kelvins

What Is Normal Body Temperature In Kelvins

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We usually calculate our body temperature with the units known as Celsius and Fahrenheit. It is universally known that the normal body temperature in Celsius is 37 degrees while it is 97 degrees in Fahrenheit, more or less. But what is normal body temperature in Kelvins?

Kelvins is just another one of those measurement units meant for temperatures. It also has its own measurements with a gap that is far from both Celsius and Fahrenheit. The Kelvin scale itself is made because of a relationship between the pressure and the temperature of gases.

Now to figure out the normal body temperature in the Kelvin unit, you will need some help. And we are that help!

Important Matters to Consider When Calculating in Kelvins

There are some things you need to know to be able to convert normal body temperature measures in Celsius or Fahrenheit into the measurement of Kelvins. These important matters are given below

Properties of Kelvin

The measurement unit of Kelvin is independent when it comes to the properties of cold substances like ice or warm substances like human bodies.

There is a range of many more temperatures aside from the ones measured in Celsius and Fahrenheit. The Kelvin scale helps prove that as it shows that absolute minimum temperature exists.

Adding Units

You are now about to make adjustments to your current calculations. Since we are dealing with Celsius here, you have to add about 273.15 units. For every unit, an increase of 273.15 units is compulsory.

An example of this would be the measurement of 0 degrees Celsius. If anything is at 0 degree Celsius, then you can calculate it as 273.15 Kelvins in temperature. Or you can calculate it as 0 kelvin is equal to -273.15 degrees Celsius.

Converting Normal Temperature

As we have discussed before, the normal body temperature in Celsius is 37 degrees, while the normal body temperature in Fahrenheit is 97 degrees.

Converting Normal Temperature

For example, let us calculate with accuracy that the normal body temperature of human beings is 36.85 degrees Celsius. Then what would this very measurement be once it is converted into Kelvins? You need to add about 273.15 kelvins. It will end up being a calculation close to 310 kelvins.

Labeling Kelvins

Unlike the measurements of temperatures Celsius and Fahrenheit, Kelvins is treated more like units. That is why the correct way to label anything with this is by keeping the word in all lower-case alphabets and make sure it is in plural form—for example, 4 kelvins, 400 kelvins, etc.

You also need to avoid placing the word “degrees” after the numbers of the Kelvins.

Common Usage

The places where the Kelvins unit is popularly used are during measurements of very low temperatures. So, it is mostly used to calculate cold items. A good example of that would be liquid nitrogen.

There are obviously many things that could measure as absolute zero or below zero. That is when Kelvins come in hand. The Kelvin is an SI unit, so it is mostly used for scientific projects.


Since Kelvins is a measurement for mostly absolute temperatures, it is most effective on absolute scales instead of relative ones. That is because, with absolute scales, we can measure temperatures in ratios.

If the temperature of something is 200 kelvins or K, then you can easily assume that it is twice of 100 K. On the other hand, if something is 200 degrees Celsius, it will not be twice of 100 degrees Celsius.

Comparison of the Temperature Scales

There are basically 3 scales for measuring temperature. The Celsius scale has the measurement of the freezing point of water at 0° C and the boiling point at 100° C.

Regarding the Fahrenheit scale, it has the measurement of the freezing point at 32° F and the boiling point at 212° F. Here we can see that 1 degree of Celsius is at least 1.8 times that of 1 degree of Fahrenheit.

Comparison of the Temperature Scales

On the Kelvin scale, the lowest temperature is always at 0 kelvins, also known as absolute zero. For Kelvins, the freezing point of water will be 273.15 K, and the boiling point of water will be 373.15 K since its magnitude of differences is equal to that of the temperatures on the Celsius scale.

Calculations of Conversions


The conversion of temperatures amongst the measurements Celsius, Fahrenheit, and Kelvin, can most accurately be done with some mathematical equations. These equations are given below:

  • Converting Celsius to Kelvin: T(K) = T(°C) + 273.15
  • Converting Kelvin to Celsius: T(°C) = T(K) – 273.15
  • Converting Fahrenheit to Kelvin: T(K) = 59(T(∘F) − 32) + 273.15T(K) = 59(T(∘F) −32) + 273.15
  • Converting Kelvin to Fahrenheit: T(∘F) = 95(T(K) −273.15) + 32T(∘F) = 95(T(K) −273.15) + 32

We can see in the above calculations that the conversions between Kelvin and Celsius are much simpler and shorter than the conversions between Kelvin and Fahrenheit.

Calculations of Conversions

The reason behind this is because Celsius and Kelvin have similarities in the differences between their freezing point and boiling point of water.

On the other hand, there are no equal measurements between Kelvin and Fahrenheit. For this reason, the calculations have been broken down into the conversions between Fahrenheit and Celsius to show how it can be converted into Kelvins.

Final Words      

As we can understand that the Kelvin scale is basically a kind of scale for temperature where 0 kelvins is considered the lowest temperature that could possibly exist. This temperature clearly exceeds what the general Celsius and Fahrenheit represents.

We can now easily find out what is normal body temperature in kelvins once we understand how the Kelvin scale works.


1. en.wikipedia.org/wiki/Kelvin

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