How Much Sand for Pavers?
Whether you want to create a paved driveway or an elaborate patio, you must make a stable foundation on which to lay stone or concrete pavers. The layer that directly supports these elements is typically paving sand. Use our paver sand calculator to determine exactly how much sand you need — in volume, weight, and estimated cost.
Step-by-Step: How to Calculate Paver Sand
- Choose your unit system — US Imperial (feet & inches) or Metric (metres & centimetres).
- Enter the dimensions of your paved surface. For a rectangular area simply provide the length and width. For example, a typical parking space measures 8.5 ft × 19.0 ft.
- Set the sand depth (thickness of the sand layer). A standard screed layer is 1 inch (2.5 cm). For heavier-duty areas you may use 1.5 in (4 cm).
- Optionally enter the sand price per cubic yard (Imperial) or per m³ (Metric) and select your currency to get a cost estimate.
- Click Calculate to get the volume, weight, and number of bags needed.
Example Calculation (Imperial)
Consider a parking space that is 8.5 ft × 19.0 ft with a sand depth of 1 inch:
- Area = 8.5 × 19.0 = 161.5 ft²
- Volume = 161.5 × (1 ÷ 12) ≈ 13.46 ft³ ≈ 0.499 yd³
- Weight ≈ 13.46 × 100 ≈ 1,346 lb ≈ 0.67 short tons
- 50 lb bags needed ≈ 27 bags
Example Calculation (Metric)
A patio of 2.6 m × 5.8 m with a sand depth of 2.5 cm:
- Area = 2.6 × 5.8 = 15.08 m²
- Volume = 15.08 × 0.025 = 0.377 m³ = 377 L
- Weight ≈ 0.377 × 1700 ≈ 641 kg ≈ 0.641 t
- 25 kg bags needed ≈ 26 bags
FAQs
What is the best paver sand?
For creating a sand screed base layer, use sharp (coarse) sand — its angular grains compact well and resist shifting. For filling the joints between pavers, polymeric sand is the best choice: it hardens when wetted and prevents weed growth and ant invasion.
How thick should the paver sand layer be?
The industry standard is 1 inch (2.5 cm) for the bedding layer. Going thinner risks uneven settling; going much thicker can cause instability. After laying pavers, compact the surface with a plate compactor — the sand will compress by about 15–20%, so plan accordingly.
Can paver sand prevent weed growth?
Yes — especially polymeric sand, which is designed for joint filling. Once activated with water it binds into a semi-rigid material that seals gaps, stops weed germination, and resists insect tunnelling. Always follow the manufacturer's activation instructions.
How do I calculate sand for an irregular shape?
Divide the surface into rectangles or triangles, calculate the area of each section, sum them up, and use that total area in our calculator. Alternatively, enter the total area directly by measuring the surface with a tape or laser distance measure.
How much extra sand should I buy?
Always add 10–15% extra to account for waste, compaction, and filling gaps between pavers. Our calculator gives you the theoretical volume — ordering a little more ensures you won't need a second trip to the store.
What sand density does this calculator use?
We use a standard density of 100 lb/ft³ (≈ 1,700 kg/m³) for paving sand, which reflects typical dry, compacted coarse sand. If you know the exact density of the product you're purchasing (listed on the bag), adjust your bag count accordingly.