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Area calculator

Compute the area of nine common shapes from their dimensions, with the substituted formula shown and conversions to other area units.

Enter the dimensions to get the area.

Each shape uses one formula, shown with your numbers substituted in, so the work stays checkable. Conversions run through exact square meters: an inch is exactly 25.4 mm and a foot exactly 0.3048 m, so nothing drifts. This is flat area only; no surface areas of solids, no perimeters, and no curved solids.
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More unit & math tools

- Unit converter (/converters/units)
- Aspect ratio and DPI (/converters/aspect-ratio)
All unit & math tools (/converters)

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