Trapezoid Area Calculator
Calculate the area of a trapezoid from its two parallel sides and height. Shows the formula with step-by-step calculation.
How to Use Trapezoid Area Calculator
The Trapezoid Area Calculator computes the area of a trapezoid (trapezium) using the formula A = (a + b) / 2 × h, where a and b are the two parallel sides and h is the perpendicular height between them. Enter the lengths of both parallel sides and the height, then get the exact area with the formula shown step by step. Useful for geometry homework, land surveying, architecture, construction planning, and any application involving trapezoidal shapes. Supports decimal values for precise measurements. All calculations run locally in your browser.
Step-by-Step Instructions
- Enter the length of parallel side a (top)
- Enter the length of parallel side b (bottom)
- Enter the height (perpendicular distance between parallel sides)
- Click Calculate Area to see the result with formula
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