Free tool

Mulch Calculator

Enter your bed size and mulch depth to get the cubic yards and the exact number of 2 cu ft bags you need — no more guessing at the garden center.

Mulch volume calculator

2–3 in for beds, 3–4 in to suppress weeds.

Mulch needed

0.93 cu yd

or 13 bags (2 cu ft each)

Area100 sq ft
Volume25 cu ft
Bulk mulch0.93 cu yd
2 cu ft bagsrounded up13
Coverage per cu ydat 3 in deep108 sq ft

1 cu yd = 27 cu ft = 13.5 bags of 2 cu ft mulch. Counts round up so you never come up short. Order ~10% extra for settling and uneven beds.

How to calculate how much mulch you need

Mulch is sold by volume, not area, so you need three numbers: the length and width of the bed (or its total square footage) and how deep you want the mulch. The math is straightforward:

  • Find the volume. Multiply area by depth in feet. A 100 sq ft bed at 3 inches deep is 100 × (3 ÷ 12) = 25 cubic feet.
  • Convert to cubic yards. Divide cubic feet by 27, because 1 cubic yard = 27 cubic feet. So 25 ÷ 27 = 0.93 cubic yards.
  • Convert to bags. The standard bag holds 2 cubic feet, so divide cubic feet by 2 and round up: 25 ÷ 2 = 13 bags. That matches the 13.5 bags-per-yard rule.

The calculator above runs this live as you type. Constants follow standard nursery and university extension mulch recommendations.

Bulk yards vs. bags

Bagged mulch is easy to haul in a car and simple to price, but it gets expensive fast on big jobs. Because a cubic yard is 13.5 bags of 2 cubic foot mulch, anything past roughly 8 to 10 bags is usually cheaper delivered in bulk. For a pro crew mulching several properties a week, bulk almost always wins on both price and time. Pricing the job itself? Use the lawn care pricing calculator to turn material cost into a profitable quote.

Mulch depth and coverage

Depth drives everything. Two to three inches suits most beds, while three to four inches better suppresses weeds and holds moisture. Because coverage is 324 divided by the depth in inches, one cubic yard covers about 162 sq ft at 2 inches, 108 sq ft at 3 inches, and 81 sq ft at 4 inches. Order about 10% extra for settling and uneven ground. If you are building a mulching or landscaping service, see how to start a lawn care business and how to start a landscaping business.

Frequently asked questions

How many bags of mulch are in a yard?

A cubic yard equals 27 cubic feet, so a yard of mulch is 13.5 bags of the standard 2 cubic foot size. If your bags are 3 cubic feet, a yard is 9 bags. Once you pass roughly 8 to 10 bags of 2 cubic foot mulch, ordering bulk by the yard usually costs less than buying bags.

How many bags of mulch are on a pallet?

Pallets vary by supplier, but a full pallet of 2 cubic foot bagged mulch typically holds 60 to 70 bags, which is about 120 to 140 cubic feet, or roughly 4.5 to 5 cubic yards. Always confirm the bag size and count with your supplier, since 3 cubic foot bags ship fewer per pallet.

How much does a yard of mulch cover?

One cubic yard is 27 cubic feet, so coverage depends on depth. At 3 inches deep a yard covers about 108 square feet, at 2 inches about 162 square feet, and at 4 inches about 81 square feet. The rule is 324 divided by the depth in inches equals the square feet one yard will cover.

How deep should mulch be?

Two to three inches is right for most landscape beds, and three to four inches helps suppress weeds and hold moisture. Avoid piling mulch against trunks and stems. Fresh top-ups over existing mulch usually only need one to two inches to refresh color and depth.

Need a different estimate? Browse all free tools for service businesses.

Mulch it, then run the business in Fieldtics

Nail the material order here, then run the whole job in Fieldtics — scheduling, a customer CRM, and the mobile app in one free app. The free tier covers unlimited clients, job scheduling, and no credit card. The $29/mo Professional tier adds quotes, invoicing, online payments, and team scheduling. Trusted by 500+ service businesses.