GoGardenPlan your yard, the easy way

Landscape Fabric Calculator

How much weed fabric — and how many staples — will your bed take? Enter the bed size and your roll width, and GoGarden works out the strips, rolls, linear feet, and landscape staples, with the seam overlap folded in.

1roll of fabric3 ft × 100 ft
  • 200 sq ft covered
  • 4 strips
  • 82 linear ft
  • ~88 staples

Includes 4 in seam overlap and edge, seam & field staples. Buys 300 sq ft of fabric to cover 200 sq ft.

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Estimates use fixed-width rolls with a seam overlap — the same way installers lay weed fabric. Odd shapes: add a couple of rectangles together. Confirm against your actual roll and buy a little extra for cuts.

Laying fabric for a bed? Total the mulch or gravel that goes on top, or plan the whole thing in the Lawn-Conversion Planner.

Weed & landscape fabric — FAQs

How much landscape fabric do I need?

Divide your bed width by the roll width to get the number of parallel strips (round up, and allow a few inches of overlap where strips meet), then multiply the strips by the bed length for total linear feet, and divide by your roll length for the number of rolls. The calculator does all of this — including the overlap — from your bed size and roll dimensions.

How much should landscape fabric overlap at the seams?

Overlap adjacent strips by about 3–6 inches so weeds can't push through the gap. More overlap means slightly more fabric and one more strip on wide beds. The calculator defaults to 4 inches and folds it into the roll count.

How many landscape staples do I need?

Staple the edges and every seam roughly every 1–2 feet, plus a few across the open field so the fabric can't billow. For a typical bed that lands around one staple per 2–4 square feet. The calculator estimates edge, seam, and field staples from your bed size and spacing.

What width of landscape fabric should I buy?

3 ft is the most common homeowner roll; 4 ft and 6 ft rolls cover wide beds with fewer seams (and fewer staples). Wider rolls waste more on narrow beds, so match the roll width roughly to your bed — the calculator lets you compare 3, 4, and 6 ft.

Do I put fabric under mulch, gravel, or both?

Both are common: fabric under gravel keeps stone from sinking into soil, and under mulch it suppresses weeds (though mulch breaks down on top over time). For a lawn conversion, fabric goes down after you remove the turf and before the mulch or gravel and plants.