Enter the amount of heat passing through the window or other material and the amount of heat that would pass through a clear glass of the same size into the calculator to determine the shading coefficient.

## Shading Coefficient Formula

The following formula is used to calculate the shading coefficient.

SC = Ht / Hc

Variables:

- SC is the shading coefficient (no units)
- Ht is the amount of heat passing through the window or other material (BTU/hr)
- Hc is the amount of heat that would pass through a clear glass of the same size (BTU/hr)

To calculate the shading coefficient, divide the amount of heat passing through the window or other material by the amount of heat that would pass through a clear glass of the same size. A lower shading coefficient indicates better performance in reducing heat gain.

## What is a Shading Coefficient?

A shading coefficient is a measure of the amount of heat passing through a window or other transparent or translucent material compared to the amount of heat that would pass through a clear glass of the same size. It is used in building design to help determine the energy efficiency of a structure. A lower shading coefficient indicates better performance in reducing heat gain.

## How to Calculate Shading Coefficient?

The following steps outline how to calculate the Shading Coefficient (SC).

- First, determine the amount of heat passing through the window or other material (Ht) in BTU/hr.
- Next, determine the amount of heat that would pass through a clear glass of the same size (Hc) in BTU/hr.
- Next, gather the formula from above: SC = Ht / Hc.
- Finally, calculate the Shading Coefficient (SC).
- 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.

Amount of heat passing through the window or other material (Ht) = 120 BTU/hr

Amount of heat that would pass through a clear glass of the same size (Hc) = 80 BTU/hr