How to Calculate Paver Sand and Base Material
Two separate layers, each with its own depth and volume
Two layers, two calculations
A typical paver installation has a compacted base layer (crushed stone or road base, providing structural support and drainage) and a thin bedding sand layer directly under the pavers (for leveling). Each layer has a different, much smaller depth than the other, so they're calculated as two separate volumes.
Base layer depth
Base depth is typically several inches (commonly 4-6 inches for a patio, more for a driveway subject to vehicle loads), compacted in lifts. It depends heavily on soil conditions and the load the surface will carry — a local paving contractor or manufacturer spec is the best source for your specific project.
Bedding sand depth
Bedding sand is typically only about 1 inch deep, spread and screeded flat just before laying pavers. Because it's so thin, even a moderately large patio uses a relatively small sand volume compared to the base layer beneath it.
Calculate each layer the same way
Both layers use area × depth, converted to cubic yards, exactly like a concrete slab volume calculation — just with two different depths for two different materials.
Worked Example
A 200 ft² patio: 4 in base, 1 in bedding sand.
Base: 200 × (4/12) = 66.7 ft³ = 2.47 yd³
Sand: 200 × (1/12) = 16.7 ft³ = 0.62 yd³
Related Calculators
Related Guides
From the Blog
Sources
NIST SP 811
Unit conversion reference (cubic feet, cubic yards, cubic metres).
NIST SP 811 — reference