Enter the surface area of the object and the wind speed into the calculator to determine the wind pressure and wind force.

## Wind Pressure Formula

The following formula is used to calculate the wind pressure and wind force.

F = 1/2*p*V^2*A
• Where F is the wind force (N)
• p is the air density (kg/m^3)
• V is the air velocity (m/s)
• A is the surface area (m^2)

The wind force is also known as the wind load.

The formula can further be reduced to the following:

WP = 1/2*p*V^2
• Where WP is the wind pressure (Pa)
• p is the air density
• V is the air velocity

## Wind Pressure Definition

Wind pressure is defined as the dynamic force per unit area that is acting on an object that is being affected by the movement of air.

## Example Problem

How to calculate wind pressure?

1. First, determine the density of air.

Dry air is estimated to have 1.2 kg/m^3.

2. Next, determine the surface area of the object.

In this example, the object is a simple sphere with a cross-sectional surface area of 50 m^2.

3. Next, determine the wind speed.

In this example, the wind velocity is 1.5 m/s.

4. Finally, calculate the wind pressure using the formula above:

First, the wind force is calculated as:
F = 1/2*p*V^2*A
F = 1/2*1.2*1.5^2*50
F = 67.5 N.
Then the wind pressure is calculated by dividing the force by area:
WP = F/A
WP = 67.5/ 50
WP = 1.35