Trapezoid Perimeter Calculator
Calculate trapezoid perimeter from all four sides, isosceles trapezoid inputs, right trapezoid inputs, or bases and height.
Trapezoid perimeter from bases and legs
English search intent is usually to add the two bases and two legs. The tool also handles common classroom variants where the trapezoid is isosceles or right-angled.
| Mode | Inputs | Output |
|---|---|---|
| General trapezoid | Two bases and two legs | Perimeter |
| Isosceles trapezoid | Two bases and one equal leg | Perimeter |
| Right trapezoid | Two bases and height | Missing slanted leg and perimeter |
| Isosceles with height | Two bases and height | Leg length and perimeter |
Trapezoid formulas
P is perimeter; a and b are bases; c and d are legs.
For a right trapezoid, h is height and c is the slanted leg.
Frequently Asked Questions
Sources and References
Calculations are based on the listed reference sources. Links open in a new tab.
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