Mulch Calculator

Estimate how much mulch you need for a garden bed — in cubic yards, cubic feet, and standard 2-cubic-foot bags — from the bed's length, width, and depth.

📅 Updated: 2026-08-15 ✍️ Author: RenoFig Research Team 📊 Data: Standard 2 cu ft bag / 27 cu ft per yard ✅ Free & No Sign-Up

Calculator Inputs

Results

Bed Area—
Volume (cubic feet)—
Volume (cubic yards)—
Bags (2 cu ft each)—

* Estimate only. Odd bed shapes and edging increase needs slightly. Bulk orders are sold by the cubic yard.

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Formula & How It Works
StepFormula
Volume (cu ft)Area (sq ft) × Depth (in) ÷ 12
Cubic yardscu ft ÷ 27
Bags (2 cu ft)⌈ cu ft ÷ 2 ⌉

Standard assumptions: bagged mulch is universally sold in 2-cubic-foot bags; 27 cubic feet = 1 cubic yard (bulk deliveries). Depth guidance: 2 inches is the landscape-standard layer.

Frequently Asked Questions

A 2-inch layer is the standard recommendation for most landscape beds (it suppresses weeds and retains moisture without suffocating plants). Use 3 inches for aggressive weed control and 0.5–1 inch for fine textures like pine straw or around shallow roots.
Most bagged mulch is 2 cubic feet. Divide your total cubic feet by 2 and round up. A 10x20 ft bed at 2 inches deep needs about 200 cu ft ÷ 27 ≈ 7.4 cu yd, or about 100 bags (2 cu ft each).
There are 27 cubic feet in a cubic yard, so divide cubic feet by 27. Bulk mulch deliveries are usually sold by the cubic yard.

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Data sources & retrieved: 2026-08-15 — Standard US bagged-mulch volume (2 cu ft per bag); 1 cubic yard = 27 cubic feet; 2-inch landscape-standard mulch depth (extension / landscape-trade guidance).

Disclaimer: This tool is for educational estimation only. Irregular beds and desired compaction affect totals. It does not constitute a quote or professional advice.