Acreage to Linear Feet
Convert lot size to fence perimeter.
Enter your acreage and lot shape to estimate the linear feet of fence you'll need.
Calculation Results
Save this calculation in the free app
Smart Fencing Calculator keeps your fence projects on your phone and works offline on the job site. On iPhone? It's inside Roofing Calculator & Estimator.
📌 Real lots are rarely perfect rectangles — verify with a property survey.
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🛠️ How This Calculator Works
Converts acres to square feet (1 acre = 43,560 sq ft), then computes the perimeter assuming a square or a rectangle of the given length-to-width ratio.
📐 Formula
Square: P = 4√A | Rectangle: P = 2(w + l) where w = √(A/r)📝 Example Calculation
1 acre, square shape: Area = 43,560 sq ft Side = √43,560 = 208.7 ft Perimeter = 4 × 208.7 = 835 ft
💡 Pro Tips from Fence Builders
- Real lots are rarely perfect rectangles — verify with your property survey.
- Add 5% to fence LF for slope, jogs and tree obstructions.
❓ Frequently Asked Questions
How many feet of fence do I need for 1 acre?
About 835 ft for a perfect square; 850–900 ft for typical rectangular lots.
How many feet around 5 acres?
About 1,866 ft for a square 5-acre lot, more for elongated rectangles.
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Working the other way — you know the lot's length and width but not its size? The acreage calculator turns dimensions into acres, square feet and hectares. For a lot that isn't a rectangle, the perimeter calculator adds up its sides.