500 sq ft
A 500 sq ft area at 3 in deep works out to about 4.6 cubic yards. That is the size where bulk delivery clearly beats hauling 70 bags home yourself.
Inputs
2–3 in is standard for beds
Extra for settling and uneven ground
How it's calculated
cubic feet = length × width × (depth ÷ 12)
Order in cubic yards once you pass about 12 bags — one yard replaces roughly 13.5 standard bags and costs far less delivered in bulk.
Spreading too thin. Mulch settles, so 2–3 inches is the working depth for beds; anything under 2 inches won't hold moisture or block weeds.
Cost to Build a Fence
Frequently asked
- How many bags of mulch are in a cubic yard?
- A cubic yard is 27 cubic feet, so it equals about 13.5 standard 2 cubic foot bags. Once your job needs more than roughly 12 bags, bulk mulch is usually cheaper.
- How deep should mulch be?
- 2 to 3 inches is standard for garden beds. Less than 2 inches won't suppress weeds or hold moisture; more than 4 inches can suffocate roots.
- How much does a cubic yard of mulch cover?
- At 3 inches deep, one cubic yard covers about 108 square feet. At 2 inches it covers about 162 square feet.
- Should I add extra for waste?
- Yes. A 10% waste factor covers settling, uneven ground, and spillage. Bump it to 15% for very irregular or sloped beds.
Related tools
Gravel Calculator
Calculate how much gravel you need in cubic yards and tons. Enter length, width, and depth — includes a waste factor for driveways and pads.
Concrete Calculator
Calculate concrete for a slab or footing in cubic yards plus 80 lb and 60 lb bag counts. Enter length, width, and thickness with a waste factor.