Sand Calculator

Why Accurate Sand Estimation Matters

Ordering too little sand means a second delivery trip, which adds cost and delays your project. Ordering too much leaves you with piles of material you need to dispose of or store. Sand is heavy, about 1.35 tons per cubic yard for dry sand, so moving extra material is not trivial. A good estimate saves time, money, and physical effort.

Professional contractors always calculate material quantities before starting a job. They measure the area, determine the required depth based on the project type, and add 5 to 10 percent for waste and compaction. Our calculator follows this same process, giving you contractor-grade estimates without needing to do the math by hand.

Understanding Sand Weight and Volume

Sand is sold by both volume (cubic yards) and weight (tons). The relationship between the two depends on the sand type and moisture content. Dry sand weighs about 100 pounds per cubic foot, which works out to 2,700 pounds (1.35 tons) per cubic yard. Wet sand is heavier at about 120 pounds per cubic foot, or 3,240 pounds (1.62 tons) per cubic yard.

Why does this matter? If you order by the cubic yard, moisture does not affect how much you receive in terms of volume. But if you order by the ton, wet sand fills fewer cubic yards per ton than dry sand. When calling a supplier, ask whether they sell by volume or weight, and whether the sand is typically wet or dry when loaded. This avoids surprises at delivery.

One cubic yard covers about 100 square feet at 3 inches deep, or 162 square feet at 2 inches deep. These rules of thumb are useful for quick mental estimates, but our calculator gives you exact numbers for any depth and area combination.

Common Sand Projects and Depths

For paver bases, a 2-inch layer of leveling sand goes on top of a compacted gravel base. The sand layer is screeded flat to create a smooth, level surface for the pavers to sit on. Use sharp or concrete sand, not play sand, because the angular grains lock together and resist shifting.

Sandboxes typically need 6 to 12 inches of play sand depending on the age of the children and how deep you want the play area. Play sand is washed, screened, and free of dust, making it safe for kids. For an 8 x 8 foot sandbox at 8 inches deep, you need about 1.6 cubic yards, which is roughly 85 bags of 50-pound play sand.

Playground surfaces require 9 to 12 inches of sand to meet safety standards for fall protection. The Consumer Product Safety Commission (CPSC) recommends at least 9 inches of loose fill material under play equipment up to 7 feet tall. For equipment taller than 7 feet, use 12 inches. This applies to both residential and commercial playgrounds.

Horse arenas use a mix of sand and footing material at 3 to 4 inches deep over a compacted base. Arena sand needs specific properties - it should be angular (not round), free of clay and silt, and have consistent grain size. A standard 60 x 120 foot arena at 3 inches deep needs about 80 cubic yards of sand.

Buying Sand: Bags vs Bulk

For small projects under half a cubic yard, buying 50-pound bags from a hardware store is practical. Bags cost $3 to $6 each depending on the type. At $4 per bag, half a cubic yard (27 bags) costs about $108. The convenience of bags is that you can transport them in a regular car and store them easily.

For projects over half a cubic yard, bulk delivery is almost always cheaper. Bulk sand costs $25 to $50 per cubic yard plus a delivery fee of $50 to $100. So one cubic yard delivered might cost $75 to $150 total, compared to $216 for the same amount in bags. The price difference grows with larger quantities.

Bulk sand is dumped in a pile by the delivery truck. You need a place for the truck to access and dump, and you will need a wheelbarrow and shovel to move the sand to your project area. For very large projects, some contractors use a skid steer or small loader to move material faster.

Types of Sand and When to Use Each

Construction sand (also called sharp sand or concrete sand) has angular grains that lock together. It is the standard choice for paver bases, concrete mixing, and under-slab fills. The angular shape provides stability and good drainage. This is what most people mean when they say sand for a construction project.

Play sand is washed, screened, and rounded for child safety. It feels smooth and is free of dust, clay, and debris. Use it exclusively for sandboxes and play areas. Do not use construction sand in sandboxes because it may contain crystalline silica dust that is harmful if inhaled.

Masonry sand is finer than construction sand and is used for mortar mixing, stucco, and as a top-dressing for lawns. It has a smoother texture and compacts well. Polymeric sand is a specialty product for filling joints between pavers. It hardens when wetted, locking pavers in place and preventing weed growth.

Tips for Working with Sand

Always compact your base material before adding the final sand layer. For paver bases, compact the gravel sub-base with a plate compactor or hand tamper. Then add the sand leveling layer and screed it flat using guide rails and a straight board. Do not compact the leveling sand; it needs to stay loose so it can fill the voids under the pavers.

Grade the sand away from buildings for drainage. A slope of one-quarter inch per foot is standard. This prevents water from pooling against foundations. Use a level and a long straightedge to check your grade as you work.

If rain is forecasted, cover your sand pile with a tarp. Wet sand is much heavier to shovel and harder to level precisely. It also clumps, making it difficult to achieve a smooth, even surface. Work with dry sand whenever possible for the best results.