Estimate mulch volume, bags, coverage, extra material, and optional bulk or bag cost for rectangular, circular, or known-area landscaping beds.
CalcRocket normalizes lengths to meters and areas to square meters, then calculates one canonical cubic-meter volume. Shared conversions provide cubic feet, cubic yards, and liters.
Mulch type does not change the geometric volume required at a given area and depth, so this calculator does not estimate weight.
Depth, extra allowance, and bag volume are user-editable planning inputs. The quick-select values are conveniences, not universal landscaping or product requirements.
volume = length × width × depth × quantityvolume = π × (diameter ÷ 2)² × depth × quantityvolume = area × depth × quantityrecommended volume = base volume × (1 + extra % ÷ 100)bags to buy = ceiling(recommended volume ÷ bag volume)coverage area = one unit of volume ÷ depthA 20 ft × 10 ft bed at 3 in depth uses 50 ft³ or 1.85185 yd³. With an entered 5% allowance, it uses 52.5 ft³ or 1.94444 yd³.
A known 500 ft² area at 3 in depth uses 125 ft³ or 4.62963 yd³ before extra mulch.
A 20 m² area at 5 cm depth uses 1 m³ or 1,000 L. With an entered 50 L bag volume and no extra, buy 20 bags.
Enter the project-specific intended depth. Depth presets are arithmetic shortcuts, not horticultural recommendations.
Preset bag volumes are conveniences. Enter the volume printed on the actual product package.
The initial 5% value is editable and should not be treated as a universal ordering requirement.
Optional prices compare calculated bulk volume with the whole number of bags to buy. Bag volume is product dependent, and purchase count rounds upward. Delivery, taxes, labor, spreading, and local fees are excluded.
Coverage is generated from volume divided by the user-entered depth rather than a hardcoded lookup, so the selected depth and reference table remain mathematically consistent.
Enter bed shape or known area, project depth, quantity, editable extra allowance, and the actual bag volume when estimating bags.
Calculate cubic feet and divide by 27, or let CalcRocket normalize mixed units.
There are exactly 27 cubic feet in one cubic yard.
It depends on the depth entered; at 3 inches it covers about 108 ft².
Recommended volume is divided by the product's entered bag volume and rounded upward.
One cubic yard is 13.5 two-cubic-foot bag volumes, so a purchase covering at least one yard requires 14 whole bags.
Use the depth supplied by your planting, material, or project guidance; CalcRocket does not prescribe it.
The appropriate allowance is project dependent. The initial 5% value is editable.
The calculator uses π times radius squared times depth.
Pricing varies. Enter both optional prices for a material-only comparison.
Not for the same area and depth; the calculator estimates geometric volume only.
Yes, using meters, centimeters, square meters, cubic meters, liters, and entered liter bag sizes.