How much mulch for a 5×20 ft area 4 inches deep?
Answer
1.23 cubic yards (17 bags)
Area: 100 sq ft17 bags (2 cu ft each)Depth: 4 inches
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How We Calculated This
Cubic Yards = (Length × Width × Depth/12) / 27
(20 × 5 × 4/12) / 27 = 33.33 cu ft / 27 = 1.23 cubic yards
Related Calculations
How much mulch for a 5×10 ft area 2 inches deep?0.31 cubic yards (5 bags)How much mulch for a 5×10 ft area 3 inches deep?0.46 cubic yards (7 bags)How much mulch for a 5×10 ft area 4 inches deep?0.62 cubic yards (9 bags)How much mulch for a 5×20 ft area 2 inches deep?0.62 cubic yards (9 bags)How much mulch for a 5×20 ft area 3 inches deep?0.93 cubic yards (13 bags)
Calculated using verified formulas. Last updated March 2026.