Construction & landscaping calculator
Mulch & Soil Calculator
Estimate mulch, topsoil, compost or similar landscape material from area and depth, then convert the result to bulk volume or full bags.
Enter the area and material depth.
Mulch and soil example
Example: 20 ft × 10 ft bed, 3 in deep, with 10% overage.
Base volume = 20 × 10 × (3 ÷ 12) = 50 ft³
Base cubic yards = 50 ÷ 27 = 1.85 yd³
With 10% overage = 2.04 yd³
Base cubic yards = 50 ÷ 27 = 1.85 yd³
With 10% overage = 2.04 yd³
Bulk versus bagged material
Bulk mulch and soil are often sold by cubic yard or cubic metre, while retail products may be sold by bag volume. Enter the bag size to compare how many full bags would be required.