Enter the length of the gutter (ft) into the Gutter Slope Calculator. The calculator will evaluate and display the Gutter Slope.

## Gutter Slope Formula

The following formula is used to calculate the Gutter Slope.

GS = .5 * L / 10

• Where GS is the Gutter Slope (inches of height needed)
• L is the length of the gutter (ft)

It’s recommended that for every 10 ft of length of gutter, there should be 1/2″ of drop.

## How to Calculate Gutter Slope?

The following example problems outline how to calculate Gutter Slope.

Example Problem #1:

1. First, determine the length of the gutter (ft).
• The length of the gutter (ft) is given as: 50.
2. Finally, calculate the Gutter Slope using the equation above:

GS = .5 * L / 10

The values given above are inserted into the equation below and the solution is calculated:

GS = .5 * 50 / 10  = 2.5 (inches of height/drop needed)

Example Problem #2:

For this problem, the variables needed are provided below:

length of the gutter (ft) = 80

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer.

GS = .5 * L / 10  = ?