Trapezoid Area Calculator Online
What you can expect
Calculate the area of a trapezoid from its two parallel base lengths and its vertical height.
Trapezoid Area
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Frequently asked questions
- What is the formula for the area of a trapezoid?
- Area = (base_a + base_b) / 2 × height, where base_a and base_b are the two parallel sides and height is the perpendicular distance between them.
- Is a trapezoid the same as a trapezium?
- In American English, "trapezoid" has exactly one pair of parallel sides; in British English, that shape is called a "trapezium," and the terms are swapped.
- Which sides count as the "bases"?
- The two parallel sides are the bases. The height must be measured perpendicular to them, not along a slanted side.
- Is this tool free to use?
- Yes — completely free, no account needed. Everything is calculated entirely in your browser and never uploaded to a server.
For developers
Use Trapezoid Area from Python
Open the Jupyter notebook example to see how to run this tool from the BrushCue Python API, inspect the processing steps, and adapt the workflow for scripts or batch image jobs.
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