# Area of a Trapezoid Calculator

Calculate the area of a trapezoid with given lengths of sides and height in selected units.

Result:

## How to use this calculator?

- Enter the
**Side length (a)**in the selected unit. - Enter the
**Side length (b)**in the selected unit. - Enter the
**Height (h)**in the selected unit. - See the calculated
**Area of a Trapezoid**in the Result section.

## How to calculate Area of a Trapezoid?

Add the lengths of sides a and b, and then divide the result by 2. Take this number and multiply it by the height of the trapezoid (h).**Area of a Trapezoid** = (a + b) / 2 * h

Where:

- a - Side Length (a)
- b - Side Length (b)
- h - Height (h)

**Example:**Calculate the area of a trapezoid with side length (a) of 7 cm, side length (b) of 10 cm, and height of 8 cm.

Area = (a + b) / 2 * h

Area = (7 cm + 10 cm) / 2 * 8 cm

Area = 17 cm / 2 * 8 cm

Area = 8.5 cm * 8 cm

Area = 8.5 cm * 8 cm = 68 cm²