Area of a Trapezoid Calculator
Result
Area of a Trapezoid Calculator Find the area of a trapezoid from its two parallel sides and the perpendicular height using A = ½ × (a + b) × h. A trapezoid has one pair of parallel sides (the bases a and b); the height is the straight-line distance betwee — free online calculator.
Formula
- Area of a Trapezoid Calculator calculates its result from Base a (first parallel side), Base b (second parallel side), Height (perpendicular distance). It uses the formula Area = ½ × (a + b) × h. Change any input to recalculate the result instantly.
- The main inputs are Base a (first parallel side), Base b (second parallel side), Height (perpendicular distance). Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Area of a Trapezoid
- Base a (first parallel side): 5
- Base b (second parallel side): 7
- Height (perpendicular distance): 4
Using Base a (first parallel side) = 5, Base b (second parallel side) = 7, Height (perpendicular distance) = 4, the calculated result is 24.
Sample result: Calculating…
Frequently asked questions
What does the Area of a Trapezoid calculate?
Area of a Trapezoid Calculator Find the area of a trapezoid from its two parallel sides and the perpendicular height using A = ½ × (a + b) × h. A trapezoid has one pair of parallel sides (the bases a and b); the height is the straight-line distance betwee — free online calculator.
Which values should I enter?
Enter Base a (first parallel side), Base b (second parallel side), Height (perpendicular distance) using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Area = ½ × (a + b) × h.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.