Trapezoid Calculator
Area, perimeter and median of a trapezoid.
Area
40cm²
Median
8cm
Height
5cm
ShowHide the working
- 1Median = (10 + 6) ÷ 2 = 8
- 2Area = median × height = 40
Formula
A = ((a + b) ÷ 2) × hHow it works
The area of a trapezoid is its median (the average of the two parallel sides) times its height.
Example
Parallel sides of 10 and 6 with a height of 5 give an area of 40.
About the Trapezoid Calculator
Area, perimeter and median of a trapezoid. It sits in the Geometry section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Trapezoid Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Trapezoid Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Trapezoid Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Geometry?
- Area, perimeter, volume and surface area for every common shape. You can browse the full Geometry category for related calculators.