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Acreage calculator

Measure plot area from length and width, four sides with a diagonal or angles, or corner coordinates, in acres, hectares, and regional units.

Enter the sides of the plot, or its corner coordinates, to see the area in acres, hectares and square feet.

The three paths are honest about themselves. A rectangle is exact. Four sides need one extra measurement to be exact: a diagonal splits the plot into two triangles, or two corner angles pin the shape, and without either the sides are assumed to sit on a circle, which usually reads a little high or low. GPS corners are integrated on a sphere of mean Earth radius, good to a few percent for ordinary plots, not survey-grade. Walk the corners in order around the plot, clockwise or counterclockwise; a zigzag order folds the shape over itself and understates the area. The regional units carry their own caveat: bigha changes by district, so it takes your local square-foot value, while guntha (1,089 sq ft), cent (435.6 sq ft), and kanal (5,445 sq ft) are fixed definitions.
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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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