Trapezoid Area and Perimeter Calculator
Calculate area, perimeter, and missing dimensions of trapezoids with multiple input methods
About this calculator
This trapezoid area and perimeter calculator helps you find the area, perimeter, and missing dimensions of any trapezoid using multiple input methods. Whether you know the parallel bases and height, or have different combinations of sides and angles, this tool automatically calculates all remaining measurements. Perfect for students, engineers, architects, and anyone working with trapezoidal shapes in geometry, construction, or design projects.
How to use
Enter any known measurements of your trapezoid, such as the parallel bases, height, or side lengths. Select your preferred input method from the available options. Click calculate to instantly get the area, perimeter, and any missing dimensions displayed with step-by-step calculations.
Frequently asked questions
What measurements do I need to calculate trapezoid area?
You need the lengths of both parallel bases and the height between them. The formula is Area = ½ × (base₁ + base₂) × height.
Can I find missing sides if I only know some dimensions?
Yes, this calculator can determine missing dimensions using various combinations of known sides, angles, and measurements through geometric relationships.
What's the difference between area and perimeter of a trapezoid?
Area measures the space inside the trapezoid (in square units), while perimeter is the total length around all four sides (in linear units).