# Trapezoid Area Calculator

Calculate the area of a trapezoid using the calculator below.

## Area:

## How to Calculate the Area of a Trapezoid

A trapezoid, also known as a trapezium in some parts of the world, is a four-sided figure with one pair of parallel sides called the bases. The other two sides, which are not parallel, are referred to as the legs.

The bases of a trapezoid are denoted *a* and *b*, while the legs are denoted *c* and *d*. The height is denoted *h*.

You can calculate the area using the trapezoid area formula.

### Trapezoid Area Formula

The trapezoid area formula is:

A = ½(a + b)h

The area *A* of a trapezoid is equal to one-half of the sum of the length of the bases *a* and *b*, times the height *h*. This method finds the average of the bases and then uses the rectangle area formula to find the area by multiplying the average base length by the height.

**For example,** let’s calculate the area of a trapezoid with bases of length 5 and 8 with a height of 4.

A = ½(5 + 8) × 4 = 26

So, this trapezoid has an area of 26.

You might also be interested in our parallelogram area calculator.