How Many Landscape Fabric Rolls Do You Need?
Enter your bed dimensions and the roll size you plan to buy. See how many rolls and staples to order, with seam overlap and cutting waste included before you shop.
Last updated: September 1, 2026
Current estimate
200 sq ft · 6\" lap · 10% waste
1rolls
Use the outside dimensions of the area you will cover. The perimeter is calculated automatically for staple planning.
The 6\" overlap default reduces usable coverage across each roll. Check your product label before ordering.
Landscape Fabric & Staples Order Summary
20 × 10 ft bed · 3 × 100 ft · 6" overlap · 10% waste · flat-ground staple estimate
Worked examples
Small rectangular bed
10 × 20 ft · 3 × 100 ft roll · 6" overlap · 10% waste
The overlap reduces a 300 sq ft label to about 250 sq ft of usable width coverage. One roll still covers this bed after waste.
Large rectangular bed
20 × 30 ft · 3 × 100 ft roll · 6" overlap · 10% waste
Staples combine edge pins every 3 ft with one field staple per 100 sq ft. Change those assumptions under Advanced.
Irregular beds combined
500 sq ft area · 120 ft perimeter · 3 × 100 ft roll
Use custom area + perimeter when several beds share one order. The perimeter is needed for a useful edge-staple estimate.
How to use this calculator
- Measure the bed. Use rectangle for one simple bed, or custom area + perimeter for several or irregular beds.
- Choose the roll you will actually buy. The label coverage is reduced for the overlap you enter.
- Review the order summary. Rolls are rounded up to full rolls; staples combine edge and field estimates.
- Adjust Advanced settings when needed. Change overlap, waste, staple spacing, or prices to match your product and site.
How we calculate
Coverage after overlap
A 3 × 100 ft roll has 300 sq ft on the label. With a 6-inch seam overlap, its usable width is 2.5 ft, so the planning coverage becomes about 250 sq ft before cutting waste.
Staples are two estimates
Edge staples follow the outside perimeter and spacing. Field staples add a simple area allowance so a large bed is not pinned only at its border.
This is a shopping estimate, not a site-engineering takeoff. Follow the selected product's installation instructions for slopes, loose soil, drainage fabric, or erosion-control work.
When landscape fabric makes sense
Under decorative rock
Fabric can act as a separation layer under rock or gravel. Plan the rock quantity separately with the Gravel Calculator, then use this page for the fabric and pins beneath it.
Under organic mulch
A fabric layer may slow future planting and soil amendments. If the bed will be replanted often, skip the blanket weed-barrier assumption and use mulch depth planning instead.
For drainage or slopes
Those are different jobs. Woven/non-woven selection, overlap, anchoring, and separation requirements depend on the system and site; use the result here only as a starting material estimate.