Mulch for 100 sq ft
At 3 inches deep, with a 5 percent allowance.
Cubic yards
0.97cu yd
2 cu ft bags
14
At 2 in deep
0.65cu yd
cubic yards = 100 × (3 / 12) ÷ 27 × 1.05 = 0.97 cu yd
That is about 9.3 m², roughly 0.74 m³ of mulch at 8 cm deep.
Open the interactive Mulch CalculatorAbout this estimate
100 square feet at a 3 inch depth works out to about 0.93 cubic yards before the small allowance. Two to three inches is the usual range for beds. One cubic yard of mulch covers 324 square feet at one inch.
Spreading mulch? A wide landscape rake levels a bed in a fraction of the time.
View on AmazonAs an Amazon Associate we earn from qualifying purchases.
Common questions
How much mulch for 100 square feet?
At 3 inches deep, 100 square feet needs about 0.97 cubic yards, roughly 14 of the 2 cubic foot bags. At 2 inches it is about 0.65 cubic yards.
Bags or bulk for this much mulch?
Bagged mulch suits small beds. Past roughly two cubic yards, bulk delivery is usually cheaper, since about 13.5 bags equal one cubic yard.
More Calculators
Concrete New
Enter slab dimensions. Result rounds up with a 7 percent waste allowance.
Gravel New
Enter the area dimensions and depth. Result rounds up with a 5 percent waste allowance.
Mulch New
Enter the bed area and depth. Result rounds up with a 5 percent allowance.
Topsoil New
Enter the area and depth. Result rounds up with a 5 percent allowance.
Paint New
Enter total wall area and coats. Result rounds up to whole units.
Flooring New
Enter room area and the coverage printed on the box. 10 percent waste added.
Tile New
Enter the area and one tile size. 10 percent waste added.
Drywall New
Enter total area to cover. 10 percent waste added.
Paver New
Enter the patio size and one paver size. 5 percent waste added.
Sand New
Enter the area and depth. 5 percent allowance added.
Roofing New
Enter the roof surface area. 10 percent waste added. Three bundles per square.
Insulation New
Enter area to cover and the coverage printed on the package. 5 percent added.
Fence New
Enter total fence length and post spacing.
Sod New
Enter the area to cover. 5 percent allowance added.
Grass Seed New
Enter area and seeding rate. Default rates suit a new lawn.
Fertilizer New
Enter area, target nitrogen rate and the first number on the bag.
Cubic Yards New
Enter length, width and depth. No waste added.
Square Footage New
Enter length and width.
Board Foot New
Enter board dimensions and quantity.
Material Cost New
Enter quantity, unit price, tax and delivery. Figures are in your own currency.