Mulch Calculator

Calculate cubic yards and estimate the cost of mulch for your landscaping beds.

1. Project Settings

$

Price per cubic yard

Accounts for irregular shapes and settling (5-15% recommended).

2. Add Bed Dimensions

Depth Presets:

Methodology

This calculator estimates cubic yards of mulch using standard landscaping volume formulas:

Square Footage = Length (ft) × Width (ft)
Cubic Yards = (Square Footage × (Depth in inches / 12)) / 27

The raw cubic yards are then multiplied by your selected waste factor (1 + waste%) to determine the total required yards. Bag estimates assume standard 2 cubic foot bags (13.5 bags per cubic yard).

Frequently Asked Questions

How much mulch do I need?

To calculate the amount of mulch needed, measure the length and width of your bed in feet, multiply them to get the square footage, and then multiply by the desired depth in inches divided by 12 to get cubic feet. Divide the cubic feet by 27 to get cubic yards.

How deep should I apply mulch?

A depth of 2 to 3 inches is generally recommended for new beds to retain moisture and suppress weeds. For refreshing an existing layer, 1 to 2 inches is usually sufficient.

What is a waste factor?

A waste factor accounts for irregularities in the bed shape, settling, and spillage during application. A 5-10% waste factor is typical for mulch projects to ensure you don't run short.

How many cubic feet are in a cubic yard?

There are 27 cubic feet in one cubic yard (3 feet x 3 feet x 3 feet).