Planning guide
What is mulch?
Mulch is a protective layer of bark, wood fiber, leaves, or other material spread over soil. It moderates soil temperature, slows evaporation, suppresses weeds, and gives planting beds a finished appearance.
How this calculation works
Multiply the bed length by its width to find area, then multiply by the chosen depth. The calculator converts all measurements to a common base before reporting cubic feet, cubic yards, and cubic meters.
Common measurement mistakes
- Using inches as feet without converting
- Measuring the entire property instead of planted bed area
- Forgetting to subtract large patios, rocks, or structures
Professional tips
- Two to three inches suits many ornamental beds
- Keep mulch a few inches away from trunks and stems
- Rake old compacted mulch before adding a fresh layer
Mulch Calculator FAQs
How much extra mulch should I buy?
A 10% allowance is a practical starting point for settling, spillage, uneven grade, and measurement error. Complex shapes may justify a little more.
Should I measure before or after edging?
Measure the finished inside dimensions of the area. Permanent edging occupies space and should not be included in the material footprint.
What depth should I use?
For established beds, 2–3 inches (5–8 cm) is common. New areas may need 3–4 inches (8–10 cm), while fine mulch should generally be applied more shallowly.