Enter the absolute temperature (K) and the area of the emitting body (m^2) into the Radiant Heat Calculator. The calculator will evaluate the Radiant Heat.

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## Radiant Heat Formula

The following two example problems outline the steps and information needed to calculate the Radiant Heat.

RH = σ * T^4 * A

Variables:

- RH is the Radiant Heat (W)
- σ is the Stefan-Boltzmann Constant = 5.6703 10
^{-8}(W/m^{2}K^{4}) - T is the absolute temperature (K)
- A is the area of the emitting body (m^2)

To calculate the radiant heat, multiply the Stefan-Boltzmann constant by the temperature raised to the power of 4, then multiply by the area.

## How to Calculate Radiant Heat?

The following steps outline how to calculate the Radiant Heat.

- First, determine the absolute temperature (K).
- Next, determine the area of the emitting body (m^2).
- Next, gather the formula from above = RH = σ * T^4 * A.
- Finally, calculate the Radiant Heat.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

absolute temperature (K) = 40

area of the emitting body (m^2) = 10

RH = σ * T^4 * A** **= ?