Rubber mulch calculator
PRORubber mulch weight, bags and coverage for playgrounds.
Short answer: lbs = cu ft × 45 (typical rubber mulch density). 15 × 15 ft × 6" = 112.5 cu ft ≈ 5,063 lb (127 bags of 40 lb). Enter your measurements above and the rubber mulch calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Pounds
3,375
40 lb bags
85
Cubic yards
2.78
How does the rubber mulch calculator work?
lbs = cu ft × 45 (typical rubber mulch density).
What does a worked example look like?
15 × 15 ft × 6" = 112.5 cu ft ≈ 5,063 lb (127 bags of 40 lb).
What do people ask most?
›Playground depth?
6" of rubber mulch meets most fall-height safety standards.
Which yard & landscape calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.