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.
volume = length × width × depth × quantityvolume = π × (diameter ÷ 2)² × depth × quantityvolume = area × depth × quantityrecommended = base × (1 + extra % ÷ 100)bags to buy = ceiling(recommended volume ÷ bag volume)coverage area = one unit volume ÷ depthA 20 ft × 10 ft bed at 3 in depth uses 50 ft³ or 1.85185 yd³. With the default 5% extra, 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 50 L bags and no extra, buy 20 bags.
Enter the project-specific intended depth; the calculator does not prescribe a universal landscaping depth.
Choose a common preset or enter the volume printed on the product bag.
The default is 5% and remains editable for site and measurement conditions.
Optional prices compare calculated bulk volume with the whole number of bags to buy. Delivery, taxes, labor, spreading, and local fees are excluded.
Coverage is generated from volume divided by depth rather than a hardcoded lookup, so the selected depth and reference table remain mathematically consistent.
Enter bed shape or known area, depth, quantity, extra allowance, and bag size.
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 depth; at 3 inches it covers about 108 ft².
Recommended volume is divided by the selected 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 appropriate to your planting, material, and project guidance.
An allowance can account for measurement and placement variation; the default 5% 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; product type can affect other considerations, but geometric volume is unchanged.
Yes, using meters, centimeters, square meters, cubic meters, liters, and liter bag sizes.