Trapezoid Area Calculator
The area of a trapezoid from its two parallel sides and height.
Result
Area
26.00
How it works
A = (a + b) ÷ 2 × height
A trapezoid has two parallel sides. Its area is the average of those sides times the perpendicular height between them.
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Frequently asked questions
Which sides are a and b?
The two parallel sides; the height is the perpendicular distance between them, not the slanted side.
What units does it use?
Whatever you enter: lengths in metres give an area in square metres.
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