Trapezoid Area Calculator
Enter the lengths of the two parallel sides and the height to calculate a trapezoid’s area.
Trapezoid Area Calculator
Calculate the area of a trapezoid from its two parallel side lengths and height.
This is a straightforward geometric calculation; ensure all measurements use the same unit, as the result will be in that unit squared.
A trapezoid’s area is the average of its two parallel side lengths, multiplied by the perpendicular distance (height) between them.
Example
- With the default values shown above, this calculator returns: Area ≈ 50.000.
Frequently Asked Questions
What is the trapezoid area formula?
Area = ½ × (side A + side B) × height, where side A and side B are the two parallel sides and height is the perpendicular distance between them.
Does this work for any quadrilateral?
No — this formula specifically applies to trapezoids, which have exactly one pair of parallel sides. Other quadrilaterals require different area formulas.