The Trapezoid Area Calculator is a tool designed to calculate the area of a trapezoid when you know the lengths of its two parallel sides and the height. It’s useful for students, engineers, architects, or anyone needing quick calculations for trapezoidal shapes.

Trapezoid Area Calculator

Calculate the area of a trapezoid by dimensions of sides and height.

Area Result:

How to Use the Calculator

Quick Trapezoid Area Calculator

  1. Enter Base 1 (a): Input the length of one of the parallel sides (Base 1).
  2. Enter Base 2 (b): Input the length of the other parallel side (Base 2).
  3. Enter Height (h): Input the height of the trapezoid (the perpendicular distance between the bases).
  4. Calculate: Press the ‘Calculate Area’ button to see the area of the trapezoid.

Formula Used

The area of a trapezoid is calculated using the formula: Area = (a + b) * h / 2 Here, ‘a’ and ‘b’ are the lengths of the two bases, and ‘h’ is the height.


  • Base 1 is 8 units, Base 2 is 6 units, and height is 4 units: The area is 28 square units.
  • Base 1 is 10 units, Base 2 is 10 units, and height is 5 units: The area is 50 square units.
  • Base 1 is 15 units, Base 2 is 5 units, and height is 3 units: The area is 30 square units.

Additional Information

Understanding the properties of trapezoids and how to calculate their area is fundamental in geometry. The trapezoid is a four-sided figure with one pair of parallel sides, distinct in its ability to model various real-world structures and shapes. This calculator simplifies the mathematical process, providing a quick and easy way to solve for area in practical and educational situations. Always ensure measurements are accurate for the best results.