Kelvin to Celsius Formula

Kelvin to Celsius Formula

We can measure temperature in Celsius or Kelvin. We can convert temperature in Kelvin to Celsius using the formula Celsius = Kelvin – 273.15°. Scales like Kelvin and Celsius are used to measure temperature. In this post, students will learn more about the Kelvin To Celsius Formula and how to convert Kelvin to Celsius.

What is Kelvin to Celsius?

The two scales used to measure temperature are kelvin and celsius. The temperature must occasionally be converted from the Kelvin scale to the Celsius scale. It is most commonly known as “Kelvin to Celsius.”

Celsius Scale

The temperature at which water freezes at zero degrees and boils at one hundred degrees is measured in Celsius. The letter C is used to represent it. The degrees system divides the Celsius scale into 100 equally spaced increments. Since there are 100 degrees between the two points, this scale is sometimes referred to as the centigrade scale.

Kelvin Scale

The International System of Units, usually referred to as the SI unit, uses Kelvin as its base unit to measure temperature. The letter K serves as its emblem. It should be emphasized that, since the Kelvin scale is an absolute scale, we do not use the word “degree” in it.

Relation between Celsius and Kelvin

The equation 0 Kelvin = -273.15° Celsius expresses the relationship between the Kelvin scale and the Celsius scale. Thus, -273.15 degrees Celsius are equal to 0 Kelvin.

The relationship between Celsius and Kelvin is given by the following formula:

$T(K)=T(°C)+273.15$

$T(°C) = T(K) – 273.15$

• Adding 273.15: To convert from Celsius to Kelvin, you add 273.15 to the Celsius temperature. This is because the Kelvin scale starts at absolute zero (0 K), which is equivalent to -273.15°C.
• Subtracting 273.15: To convert from Kelvin to Celsius, you subtract 273.15 from the Kelvin temperature. This adjustment aligns the zero points of the Celsius and Kelvin scales.

Kelvin-to-Celsius Conversion Formula

The formula to convert temperature from Kelvin (K) to Celsius (°C) is:

$T(°C)=T(K)-273.15$

Where:

• $T(°C)$ is the temperature in Celsius.
• $T(K)$ is the temperature in Kelvin.

This formula is derived from the fact that the Kelvin scale starts at absolute zero (0 K), which is equivalent to -273.15 °C. Therefore, to convert from Kelvin to Celsius, you simply subtract 273.15 from the temperature in Kelvin.

Kelvin to Celsius Conversion Table

Here’s a conversion table showing the conversion of temperatures from Kelvin (K) to Celsius (°C):

Solved Examples on Kelvin to Celsius Formula

Example 1: Convert a temperature of 300 Kelvin to Celsius.

Solution:

Using the formula $T(°C) = T(K) – 273.15$, where $T(K)=300$:

$T(°C) = 300 – 273.15$ $$

$T(°C) = 26.85°C$

Result: 300 Kelvin is equivalent to $26.85°C$.

Example 2: The temperature of a sample is measured to be 400 Kelvin. Convert this temperature to Celsius.

Solution:

Using the formula $T(°C) = T(K) – 273.15$, where $T(K) = 400$:

$T(°C)=400-273.15$

$T(°C) = 126.85°C$

Example 3: A scientific experiment is conducted at a temperature of 500 Kelvin. Determine the temperature in Celsius.

Solution:

Using the formula $T(°C)=T(K)-273.15$, where $T(K)=500$:

$T(°C)=500-273.15$

$T(°C) = 226.85°C$

500 Kelvin is equivalent to $226.85°C$.