Estimate rectangular area, sand volume, and material weight using the selected bulk density.
Enter the area, depth, and density, then calculate the required material.
Moisture, compaction, uneven ground, and supplier density can change the amount that should be ordered.
This sand calculator estimates rectangular area, filled volume, and material mass from width, length, depth, and bulk density. It converts the selected dimensions to metres, calculates cubic metres, then reports metric tonnes.
The geometric result is a starting estimate. Real sites are uneven, excavation dimensions vary, sand compacts and settles, and moisture changes bulk density. Confirm the product’s loose or compacted density with the supplier and include a project-appropriate allowance.
For several rectangles, calculate each separately and add their volumes. For irregular shapes, divide the plan into measurable parts or use a surveyed area.
Area = width × length
Volume = area × depth
Mass in kilograms = volume × bulk density
Metric tonnes = kilograms ÷ 1,000
Every length is converted to metres before multiplication. Density must be in kg/m³; the displayed unit menu does not convert another density unit.
| Entry or result | Meaning |
|---|---|
| Width | Crosswise extent of the rectangular section, converted to metres. |
| Length | Longwise extent, converted to metres. |
| Depth | Planned layer thickness, converted to metres. |
| Bulk density | Mass per bulk volume, including void space between grains, in kg/m³. |
| Volume | Ideal rectangular quantity in cubic metres. |
| Weight | Estimated mass in metric tonnes, rounded to three decimals. |
For an area 5 m long and 4 m wide with 10 cm depth, enter 5 m, 4 m, and 10 cm. Ten centimetres becomes 0.1 m. Area = 5 × 4 = 20 m², and volume = 20 × 0.1 = 2 m³.
With bulk density 1,600 kg/m³, mass = 2 × 1,600 = 3,200 kg, or 3.2 metric tonnes. The page returns 20, 2, and 3.2 with three-decimal rounding as needed.
Volume helps when a supplier sells by cubic metre; weight helps when material is sold by tonne or transport has a mass limit. Convert the supplier’s quotation carefully because a tonne is mass, not volume. The link between them is the actual bulk density.
Loose sand may compact after placement, so the delivered loose volume may need to exceed final compacted geometry. Moist sand can weigh more than dry sand for the same bulk volume. Edges, slopes, drainage, base preparation, and local engineering requirements can change quantities. For structural, playground, drainage, or load-sensitive work, follow the design specification and professional advice.
A practical ordering calculation often starts with compacted design volume, then divides or adjusts using the supplier’s stated compaction relationship before applying loose bulk density. There is no single safe percentage for every sand and job. Test data, specifications, and supplier experience should determine the allowance.
Transport capacity may be limited by weight before volume, or vice versa. Compare both the calculated cubic metres and tonnes with truck limits. If several deliveries are needed, round the number of loads upward and confirm access, stockpile space, axle limits, and unloading conditions.
Measure at several locations when depth varies. Using an average depth is reasonable only if the sampling represents high and low areas; a single shallow measurement can materially understate the order. Record those measurements before averaging them.
Use the supplier’s bulk density for the actual sand and condition, preferably matching loose or compacted placement. A generic value is only an estimate.
Water adds mass and can alter how grains pack. The same apparent volume can therefore have a different measured weight.
No. It computes ideal geometry. Apply the specified compaction or bulking allowance using supplier or project guidance.
Yes. Choose the correct unit beside each dimension; the page converts them individually to metres.
Yes. One metric tonne is 1,000 kilograms. Confirm the supplier does not mean a short or long ton.
Split it into rectangles or other measurable shapes, calculate each portion, and add them. A site survey is better for complex grading.
Usually no. Account for uneven ground, compaction, handling loss, and supplier increments according to the project specification.