Garden beds
Mulch Calculator
Convert bed area and finished depth into cubic volume and complete bags, with enough allowance to account for settling.
Preparing calculator...
How to calculate it
- Measure the bed at its longest and widest points.
- Choose the finished mulch depth.
- Enter the volume printed on one bag.
Frequently asked questions
How deep should mulch be?+
A refreshed bed often needs about 2 inches; a new bed may use 3 inches. Excess depth can retain too much moisture around plants.
How do I measure an irregular bed?+
Split it into rectangles, calculate each section, and add the results. A modest waste allowance covers curved edges.