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Geometry Calculators

Trapezoid Calculator

Find the area of a trapezoid (trapezium) from its two parallel sides and height, plus the median length.

Enter values

Results update as you type.

Result

Area

32

Median (midsegment)
8
Step-by-stepShow
  1. A = (10 + 6) ÷ 2 × 4 = 32

About the Trapezoid Calculator

Find the area of a trapezoid (trapezium) from its two parallel sides and height, plus the median length.

Also known as: trapezium area, area of trapezoid, trapezoid area formula.

How to use this calculator

  1. Enter base a, base b, height.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Open “Step-by-step” to see how the answer was worked out.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

A = ½ (a + b) h

Worked example

Using the values pre-filled in the calculator above:

  • Base a = 10
  • Base b = 6
  • Height = 4

the calculator returns:

  • Area: 32
  • Median (midsegment): 8

Working

  1. A = (10 + 6) ÷ 2 × 4 = 32