How Much Mulch for a 12x12 Area?
For a 12x12 area of mulch at 3 inches deep, you need about 1.33 cubic yards - roughly 18 bags (2 cu ft bag). The amount changes with depth; the table below shows common depths, and you can adjust everything in the calculator.
Based on a 12x12 area (144 sq ft). One cubic yard = 27 cubic feet; bags are 2 cu ft bag.
2-3 in to refresh an existing bed, 3-4 in for new beds and weed suppression.
Add prices to estimate cost (optional)
Measure the length and width of the bed in feet. For an odd shape, break it into rectangles and add them up, or use the round option for circular beds and tree rings.
Pick a depth: 2 to 3 inches refreshes an existing bed, while 3 to 4 inches is better for a new bed because it blocks more light and suppresses weeds.
Other mulch amounts
Same area, other materials
Need a different size? Open the full Mulch calculator →