Weed Barrier Calculator
Enter your size to get weed barrier quantity, plus an estimated cost. Waste is included and prices are editable.
Material needed
Estimated cost
The Material needed figure is the amount of weed barrier to buy in square feet, including waste for cuts, the Area is the bed size entered, and the Material cost is the estimated price for that quantity.
How to calculate weed barrier
Weed barrier sold by the square foot. Enter bed area to get square feet.
Formula: quantity = area × 1 × (1 + waste %) = 100 × 1 × 1.10 = 110 sq ft.
Worked example
Example: 10 ft × 10 ft = 100 sq ft. Quantity: 110 sq ft, about $33 at $0.3 per sq ft.
Tips
Measure the full area, then subtract large openings if you want an exact count. Order a little extra for cuts and breakage, and confirm quantities with your supplier before you buy.
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Frequently asked questions
How much weed barrier do I need?
Example: 10 ft × 10 ft = 100 sq ft. Quantity: 110 sq ft, about $33 at $0.3 per sq ft.
How much waste should I add?
Add 10% for straight areas and 15% for areas with many cuts, corners and openings.
Are the prices accurate?
Prices are editable estimates. The defaults are typical US figures, and your local price can be higher or lower.