Use this mulch calculator to calculate exactly how much mulch you need for your yard, garden, or landscaping project. Works with all mulch types including rubber mulch, wood chips, and bark.
Calculating how much mulch you need requires knowing your area's dimensions and your desired mulch depth. The standard recommendation is 2-4 inches of mulch for most landscaping projects. Our mulch calculator automatically computes the volume needed based on length, width, and depth measurements.
Mulch is typically sold by the cubic yard, cubic foot, or by the bag. Understanding these measurements helps you order the right amount:
The basic formula for calculating mulch needed is straightforward:
Square Footage = Length (ft) × Width (ft)Cubic Feet = Square Footage × Depth (ft)Cubic Yards = Cubic Feet ÷ 27Different mulch types have varying characteristics and coverage rates:
The ideal depth of mulch depends on your landscaping goals and plant types:
Important: Never pile mulch directly against tree trunks; keep 6 inches away to prevent rot.
Applying the right amount of mulch provides numerous benefits for your landscaping:
Quick reference for common yard and garden sizes (at 3-inch depth):
Mulch pricing varies based on type and location:
Measure your area length and width in feet, multiply them to get square footage. Then multiply by your desired depth in feet. For example, a 20×15 ft area at 3 inches deep: (20 × 15 × 0.25) ÷ 27 = approximately 2.8 cubic yards. Our calculator does this automatically!
For a 1000 sq ft area at 3 inches deep (the standard recommendation), you would need approximately 9-12 cubic yards of mulch when accounting for settling and waste. This varies based on your specific desired depth. Use our mulch calculator for precise estimates.
Rubber mulch is made from recycled tires and lasts 8-10 years compared to 1-3 years for wood mulch. It's ideal for playgrounds, pet areas, and landscaping where durability matters. It's more expensive initially but saves money long-term. Calculate the same way as other mulches using the rubber mulch calculator option.
Most mulch bags are 2 cubic feet. A cubic yard contains 13.5 bags. For a 20×15 ft area at 3 inches, you need about 2.8 cubic yards, which equals approximately 38 bags of mulch. Our calculator can show results in bags for convenience.
The standard recommendation is 3 inches of mulch depth for most landscaping projects. Use 2 inches for light coverage or annual replenishment, and 4-6 inches for heavy weed suppression and erosion control. Never exceed 4 inches near tree trunks.
Yes! Always add 10-15% extra to your calculated amount to account for settling, compaction, and waste during installation. Our mulch calculator automatically includes this option. It's better to have a little extra than to run short.