OTHER · SAND
Sand Calculator
Calculate cubic yards and tons of sand needed from area and depth. Choose sand type for accurate weight estimates, plus bags-vs-bulk toggle and cost estimate.
About This Calculator
Enter the area dimensions and desired depth, choose your sand type, and instantly see cubic yards (bulk order) and tons — plus the equivalent 50-lb bag count for smaller projects. Add bulk or bag pricing for a total cost estimate.
How It Works
Volume (ft³) = length × width × depth (in) ÷ 12. Volume (yd³) = volume (ft³) ÷ 27. Bulk order = ⌈yd³⌉. Tons = yd³ × bulk density (varies by sand type). Bags (0.5 cu ft) = ⌈ft³ ÷ 0.5⌉. Sand-type bulk densities are physical constants sourced from engineering reference tables.
The Formula
yd³ = (length × width × depthIn) ÷ (12 × 27) tons = yd³ × density
- depthIn
- desired sand depth in inches
- density
- bulk density in tons/yd³ (varies by sand type)
Frequently Asked Questions
- How much sand do I need for a sandbox?
- A standard 4×4 ft sandbox with 6 inches of sand requires about 8 cubic feet (0.30 yd³) of play sand — roughly 16 of the standard 50-lb (0.5 cu ft) bags. For an 8×8 ft sandbox at 6 inches, double that to 64 cu ft (2.4 yd³) or about 128 bags.
- What is the difference between play sand, mason sand, and concrete sand?
- Play sand is fine-grained, washed, and safe for children — ideal for sandboxes and leveling under pavers. Mason sand is similarly fine but slightly coarser, used for mortar and brick jointing. Concrete sand (sharp sand) is coarser and angular, used as a base layer and in concrete mixes. Polymeric sand contains polymer binders and is used to lock paver joints.
- When should I buy bags instead of bulk sand?
- Bags (0.5 cu ft each) are cost-effective for projects under 0.5 yd³. For anything larger, bulk delivery by the cubic yard is almost always cheaper. Use the bag count as a planning guide for small sandbox fills or paver joint work.
- Are bulk density values exact?
- No — actual density varies by moisture content, particle size, and compaction. The values used here are midpoint estimates from engineering reference tables, suitable for ordering quantities. Always add 5–10% buffer to your order.
Estimates only. Coverage figures (sq ft/gallon, bag yield, BTU/sq ft) are industry rules of thumb with real-world variance. Verify quantities with your supplier before purchasing.