Rubber mulch calculator
PRORubber mulch weight, bags and coverage for playgrounds.
Inputs
Result
Pounds
3,375
40 lb bags
85
Cubic yards
2.78
The formula
lbs = cu ft × 45 (typical rubber mulch density).
Worked example
15 × 15 ft × 6" = 112.5 cu ft ≈ 5,063 lb (127 bags of 40 lb).
Frequently asked
›Playground depth?
6" of rubber mulch meets most fall-height safety standards.