Trapezoid Area Calculator
Work out the area of a trapezoid from its two parallel sides and the perpendicular height between them. Enter parallel side a, parallel side b and…
8 of 8 free uses remaining today
Work out the area of a trapezoid from its two parallel sides and the perpendicular height between them. Enter parallel side a, parallel side b and height to see area when you calculate.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (parallel side a = 8, parallel side b = 5, height = 4), the results are: area 26.000.
Quick reference: parallel side a vs result
Reference table based on the example values; it is not your calculation result.
| Parallel side a | Area |
|---|---|
| 4 | 18.000 |
| 8 | 26.000 |
| 16 | 42.000 |
| 40 | 90.000 |
| 80 | 170.000 |
| 160 | 330.000 |
Frequently asked questions
What formula does this calculator use?
Area = (a+b) ÷ 2 × h. Variables: a = parallel side a, b = parallel side b, h = height.
What do I need to enter?
You need parallel side a, parallel side b, height. Results update as you type.
What is an example result?
With the default inputs (parallel side a = 8, parallel side b = 5, height = 4), the results are: area 26.000.
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