Trapezoid Area Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the two parallel sides and the height between them.
- Press Calculate for the area.
How it works
The area of a trapezoid (trapezium) is the average of the two parallel sides times the height: (a + b) ÷ 2 × height.
Worked example
Sides 4 m and 6 m, height 2 m. Area = (4 + 6) ÷ 2 × 2 = 10 m².
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.