Garden
Mulch Calculator
Mulch Calculator
Estimate mulch volume and bags for beds based on area and desired depth.
ft
ft
sq ft
in
cu ft
Results appear as you type.
How to use
- Enter dimensions or total square footage.
- Choose mulch depth (2-3 in is typical for beds).
- Match bag cubic feet from the label.
Formula
area = L × W (or given) volume_cu_ft = area × (depth_in / 12) bags = ceil(volume / bagCuFt)
Examples
Example 1
20×5 ft at 3 in = 25 cu ft → 13 bags at 2 cu ft.
Example 2
100 sq ft at 2 in = 16.67 cu ft.
Assumptions
- Does not subtract plant crowns or trunks.
- Bulk deliveries often sold by cubic yard (÷27).
FAQ
How deep should mulch be?
Most ornamental beds do well at 2 to 3 inches. Keep mulch off stems and trunks.
How do I convert to cubic yards?
Divide cubic feet by 27. Bulk deliveries are often priced by the yard.
Do I subtract the space taken by plants?
This tool does not subtract crowns or trunks. For sparse beds the difference is small; for dense shrubs, reduce area slightly.
What bag size should I enter?
Read the cubic feet on the bag label. Two cubic feet is common, but brands differ.