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Find trapezoid area from two parallel sides and height.
📐 Trapezoid area = average of parallel sides × height.
A trapezoid has two parallel sides (the bases). This calculator finds the area from the lengths of those sides and the perpendicular height.
Area = ((a + b) / 2) × h, where a and b are the parallel sides and h is the perpendicular distance between them.
The Trapezoid Calculator lets you figure out trapezoid calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
Common uses: people reach for this tool when they need to find a trapezoid area calculator, area of trapezoid with sides, trapezium area from height, or trapezoid calculator with steps.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
The Trapezoid Calculator is based on the following formula:
A = ½ × (a + b) × h
Variables: A = Area (square units) a, b = The two parallel sides (units) h = Perpendicular distance between them (units)
Trapezoid area. a and b are the two parallel sides (bases), h is the perpendicular height between them.
Worked example: Step 1: a = 8 m, b = 14 m, h = 5 m. Step 2: a + b = 8 + 14 = 22. Step 3: A = ½ × 22 × 5 = 55. Result: the trapezoid's area is 55 m².
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