Sand Calculator
Estimate bedding sand volume and tonnage for paving, slab preparation and general landscaping.
Sand Calculator
Estimate bedding sand volume and tonnage for paving and slab preparation.
Estimating Sand Volume And Tonnage
Bedding sand is commonly used to create a level, stable base beneath pavers, and as a fine levelling layer beneath slabs before a vapour barrier or blinding layer is placed. Volume is calculated as area (m²) × depth (m), converted to tonnage using a typical bedding sand density of 1.55 tonnes per cubic metre.
What Information You Need To Enter
Enter your project area in square metres and depth in millimetres.
Understanding Your Results
You will see the sand volume required and approximate tonnage. Actual density varies by sand type and moisture content, so this is a solid planning figure to confirm with your supplier for larger deliveries.
Why Accurate Estimating Matters
Sand is typically delivered by the tonne, and an accurate estimate helps you avoid a shortfall partway through paving or levelling work.
Frequently Asked Questions
What depth of bedding sand do I need for paving?
A typical bedding layer under pavers is around 30 mm to 50 mm over a compacted base, though this can vary depending on the paver type and the base preparation underneath.
Can I use any sand for bedding?
No -- bedding sand (often called paving sand or coarse washed sand) is a specific product chosen for its compaction and drainage properties, different from fine building or bricklaying sand.
Does moisture affect sand tonnage?
Yes, damp sand weighs more than dry sand for the same volume. Treat calculated tonnage as an approximate figure and confirm with your supplier for large orders.
Is sand used under concrete slabs?
A thin sand blinding layer is sometimes used under a slab to provide an even surface before a vapour barrier is laid, though practices vary by builder and site conditions.
What is the difference between bedding sand and washed sand?
These terms can vary by supplier -- always confirm the specific product with your supplier to make sure it suits your intended application, whether paving, bedding or general fill.
Related Calculators & Services
Need An Exact Price, Not Just An Estimate?
The Sand Calculator gives you a fast, useful planning figure. For a fixed, accurate price backed by a site assessment, request a free professional quotation from HPL Construction.
