Trapezoid Calculator

    Calculate trapezoid area, perimeter, height, legs, diagonals, and angles from bases and height, an offset, or all four sides.

    sample: bases 4 and 2.4, height 2
    Height 2Lower base 4Upper base 2.4Left leg 2.15Right leg 2.15lower leftlower rightupper rightupper left

    Trapezoid measurements from bases and sides

    English trapezoid calculator pages combine area, perimeter, side lengths, diagonals, height, and angles. This page supports isosceles trapezoids, an arbitrary top-base offset, and four-side input.

    a and b are the two parallel bases and h is the height.

    Use one length unit throughout a calculation. Linear outputs use that unit, surface areas use square units, and volume uses cubic units.

    Frequently Asked Questions

    Sources and References

    Calculations are based on the listed reference sources. Links open in a new tab.

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