How many bags of mulch are in a cubic yard?
One cubic yard is 27 cubic feet, which is exactly 13.5 standard 2-cu.-ft. bags. (Our worked example below is a 9×9 ft bed at 4 inches deep — which happens to be precisely one cubic yard.)
For your area at 4″ deep, you need about 27 cubic feet of mulch. That’s 14 bags based on 2 cu. ft. bag size.
Adjust These Numbers for Your ProjectThe math, step by step
- Your area: 9 × 9 = 81 sq. ft.
- At 4 inches deep: 81 × 0.333 = 27 cu. ft.
- No waste allowance added.
- Each bag: 2 cu. ft. → 27 ÷ 2 = 14 bags
- Bulk equivalent: 27 ÷ 27 = 1 cubic yards
- Depth is the average settled depth after the mulch is spread and fluffed, not the height of the pile.
- Bags are rounded up so you don’t run short on the last stretch.
The bags-vs-bulk decision is really a price-per-cubic-foot comparison with a delivery fee on one side. Multiply the bag price by 13.5 to get the “bagged cubic yard” price, then compare with your local bulk price plus delivery. Bulk usually wins somewhere between 2 and 4 yards — below that, bags win on convenience and no delivery fee; above it, bulk wins outright.
Watch the bag size when comparing prices: mulch commonly ships in 1, 1.5, 2, and 3 cu. ft. bags, and the 1.5s are easy to mistake for 2s on a shelf tag. A “cheaper” bag that’s 25% smaller isn’t cheaper. The math: a cubic yard is 27 bags at 1 cu. ft., 18 bags at 1.5, 13.5 at 2, and 9 at 3.
If you’re hauling bags yourself, a typical car trunk fits 8–10 of the 2-cu.-ft. bags and a midsize SUV fits about 15 — so one cubic yard is roughly one SUV load. Bulk mulch in a pickup: a standard short bed holds about 2 loose yards, level.
Frequently asked questions
How much does a cubic yard of mulch cover?
At the recommended 3-inch depth, one cubic yard covers about 108 sq. ft. At 2 inches it stretches to 162 sq. ft.
Is bulk mulch cheaper than bags?
Usually yes per cubic foot — often 30–50% less — but delivery fees eat the savings on small orders. Compare bag price × 13.5 against bulk price + delivery for your quantity.
How heavy is a bag of mulch?
A 2-cu.-ft. bag of hardwood mulch runs about 20 lb dry and can exceed 40 lb soaking wet. Buy on a dry day; you’re paying for water otherwise.