Play Sand, Mason Sand, Paver Sand, and Fill Sand: How Density Differences Change Your Tons-per-Cubic-Yard Estimate
Sand density varies because grain size, shape, and moisture content all affect how tightly particles pack. Paver sand (1.60 t/yd³) has angular grains that nest closely together. Play sand (1.35 t/yd³) has rounded, washed grains that leave more air space between particles. The density difference means paver sand is about 18% heavier per cubic yard than play sand, a significant difference when ordering bulk quantities. For the concrete sub-base below a paver project, the Concrete Bag Calculator handles footing and slab quantities separately.
Sand Type
Density
Typical Use
Grain Type
Play Sand
1.35 t/yd³
Sandboxes, children's play areas
Rounded grains, washed
Mason Sand
1.50 t/yd³
Mortar, stucco, masonry joints
Fine, angular grains
Paver Sand
1.60 t/yd³
Paver bedding and joint fill
Coarse, angular; locks in place
Fill Sand
1.45 t/yd³
Sub-base fill, grading
Variable grain size
Concrete Sand
1.55 t/yd³
Concrete mix, drainage
Coarse, ASTM C33 spec
River Sand
1.40 t/yd³
Topdressing, drainage, landscaping
Smooth, natural grains
Worked Example: 12×12 ft Paver Patio Setting Bed (1 inch)
Volume12 × 12 × (1÷12) = 12 cu ft
Cubic yards12 ÷ 27 = 0.44 cu yd
Tons (paver sand 1.6 t/yd³)0.44 × 1.6 = 0.71 tons
50 lb bagsceil(0.71 × 2000 ÷ 50) = 29 bags
Paver Sand Bedding Depth and the 1-Inch ICPI Standard: Why Adding More Sand Causes Paver Settlement
The Interlocking Concrete Pavement Institute (ICPI) specifies exactly 1 inch of bedding sand for paver installations, not 2 inches, not 1.5 inches. A thicker sand bed compresses unevenly under foot traffic and vehicle loads, causing individual pavers to sink, rock, and shift. The sand layer provides a screeded, level surface for the pavers to sit on; it is not intended to serve as a flexible cushion. The stability comes from the 4-6 inch compacted gravel base below the sand, not from the sand itself. To confirm the project area before ordering, the Square Footage Calculator handles irregular shapes.
Worked Example: 6×8 ft Sandbox Fill (6 inches deep)
Common Sand Ordering Mistakes That Lead to Unstable Installations or Wasted Material
Using more than 1 inch of paver bedding sand
A thicker sand bed causes pavers to shift, settle unevenly, and rock over time. The ICPI standard is exactly 1 inch of compacted bedding sand. More sand does not mean a better installation, it means a less stable one.
Choosing the wrong sand type for your application
Play sand has rounded grains that do not lock together. Paver sand and concrete sand have angular grains that compact and interlock. Using play sand under pavers leads to movement and sinkage within the first year.
Not adding 10-15% extra for compaction loss
Sand compacts by 10-15% after tamping. If you need a 1-inch finished bed and order exactly 1 inch of loose sand, you will end up short. Order extra and screed to final depth after compaction.
Ordering all sand as one type for a multi-layer project
A paver patio typically needs crushed stone for the base, coarse sand for drainage, and fine paver sand for the setting bed, three different materials. Run the calculator separately for each layer with the correct sand type and depth.
Forgetting delivery minimums for bulk orders
Many sand suppliers have a minimum delivery of 1-5 tons. If your project only needs 0.5 tons, buying bagged sand may be more economical than paying a delivery fee for a partial load. Always check the supplier's minimum before ordering.
For gravel and stone aggregate quantities on the same project, the Drywall Calculator is not the right tool, but if you are finishing interior walls at the same time, it handles sheet counts alongside your site work.
Frequently Asked Questions
For a paver sand setting bed, you need exactly 1 inch of compacted bedding sand over the gravel base. A 10×10 foot patio requires roughly 0.31 cubic yards or about 0.5 tons of paver sand for the setting layer. Add the gravel base separately, typically 4-6 inches of compacted crushed stone below the sand.
Researches and verifies the formulas, methodology, and source data behind each calculator on CalculatorFlux. All tools are built and checked against the cited references before publication.
Last updated: June 2026
Sand Density Reference
Sand Type
Tons/yd³
Play Sand
1.35
Mason Sand
1.5
Paver Sand
1.6
Fill Sand
1.45
Concrete Sand
1.55
River Sand
1.4
1 cubic yard27 cu ft
40 bags of 50 lb1 ton
Pro Tip
Order 10-15% more sand than calculated to account for compaction loss. Sand compacts about 10-15% once tamped, your installed depth will be less than your pre-compaction measurement.