Trapezoid (Trapezium) Area Calculator

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

Parallel side a

Parallel side b

Height

Result

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How it works

Area = ½ (a + b) × height

Frequently Asked Questions

What is the formula?

Area = ½ (a + b) × height

What units should I use?

Use any single unit for all inputs. The area result is in that unit squared, and volume is in that unit cubed.