Trapezoid Calculator
Calculate the area, perimeter, midline, and missing side details of a trapezoid using its two parallel bases, height, and legs.
Trapezoid dimensions
Your result
Trapezoid formulas
(Base a + Base b) × Height ÷ 2
a + b + c + d
(Base a + Base b) ÷ 2
Frequently asked questions
How do you calculate the area of a trapezoid?
Add the two parallel bases, divide the sum by two, and multiply by the perpendicular height.
What is the midline of a trapezoid?
The midline is the segment joining the midpoints of the two legs. Its length equals the average of the two bases.
Do I need both leg lengths?
You only need the bases and height for area. Both leg lengths are needed when calculating the full perimeter.
Results are estimates generated locally in your browser using standard mathematical formulas. They are for informational and educational purposes only and are not a substitute for verification in coursework, examinations or professional contexts requiring certified accuracy. VisionVix accepts no liability for decisions based on this tool's output.
