Acreage Calculator
Parcel area in acres from length × width or a square-footage takeoff — not a room flooring estimate. Click any i for detail.
Lot
Start from
i
Mode
Dimensions multiply length × width. Square feet skips the rectangle. Acres converts back to sq ft. |
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Length (ft)
i
Length
One side of a rectangular parcel in feet. |
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Width (ft)
i
Width
The other side in feet. A square ~208.7 ft on a side is about 1 acre. |
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Area (sq ft)
i
Area
Survey or GIS square footage when you already have it. |
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Acres
i
Acres
Decimal acres to convert back to square feet. |
How to use this calculator
- Pick dimensions, square feet, or acres.
- Enter the matching fields.
- Read acres, sq ft, and hectares.
- Irregular lots: split into rectangles and add.
Results explained
Acres = square feet ÷ 43,560. Hectares = acres × 0.4047. Interior rooms belong on the square-footage calculator.
Quick reference: acres
One acre is 43,560 square feet — about 208.7 ft square if the parcel is a square.
| Item | Detail |
|---|---|
| 1 acre | 43,560 sq ft |
| ½ acre | 21,780 sq ft |
| 1 hectare | ≈ 2.471 acres |
| Room flooring | Use square footage, not this page |
GIS acres and deed acres can disagree — this is arithmetic, not title.
How the estimate is built
acres = sq ft / 43,560. sq ft = acres × 43,560.
Example scenario
208.71 ft × 208.71 ft → 1.00 acre.
FAQ
Is this a room calculator?
No — that’s square footage for floors and paint.
Odd-shaped lot?
Add rectangles, or paste GIS sq ft in square-feet mode.
Acres to hectares?
Shown in the result. 1 acre ≈ 0.405 ha.