Lot Size Calculator

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Lot Size Calculator (USA)

Measure a residential lot from its frontage and depth — rectangular or irregular. Add front, rear and side setbacks to estimate the buildable footprint, and a price per square foot to value the parcel.

For estimation purposes only. Irregular lots use a trapezoid approximation and buildable area ignores easements & local zoning — always confirm with a survey, plat and your municipal setback code. 1 acre = 43,560 sq ft.

1 Lot Shape & Dimensions

Dimension unit

Frontage (width)

Depth

Lot area = frontage × depth.

2 Setbacks (optional)

Front

Rear

Side (each)

Estimates the buildable footprint after required yard setbacks. Set all to 0 to ignore.

3 Land Value (optional)

Price per sq ft

/sq ft

Enter a market price per square foot to estimate the lot's total value.

Total Lot Size

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Enter frontage & depth and click Calculate

Acres

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Square Meters

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Hectares

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Buildable Area (after setbacks)

Buildable footprint—

Max lot coverage—

Buildable acres—

Setbacks F / R / S—

Size Comparison

Football fields

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Basketball courts

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Tennis courts

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Conversions

Acres—

Square feet—

Square meters—

Hectares—

Key Figures

Acres —

Square feet —

Square meters —

Hectares —

Buildable sq ft —

Square miles —

Lot & buildable envelope (to scale)

Lot boundary

Buildable area

All unit conversions 8 rows

Lot Size Calculator (USA)

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