Enter the bed's length, width, and depth to calculate mulch volume and bag count.
How to Use the Mulch Calculator
Bed length, width, and depth — the same shape of input as the Concrete and Gravel calculators, scaled for a garden bed instead of a slab.
cubic feet = length (ft) × width (ft) × (depth (in) ÷ 12)Same volume math as gravel and concrete, scaled down — mulch beds usually run 2–4 inches deep rather than a full slab's thickness. This Mulch Calculator converts that volume straight into bag counts too, defaulting to 2 cubic feet per bag (the standard retail size), adjustable if yours is different.