materials calculator
Sand Calculator
The Sand Calculator applies volume = length × width × depth to entered measurements and returns sand volume and estimated mass. A numerical default is embedded in the served HTML before JavaScript runs. Use it for planning, then verify field measurements, current codes, product instructions, and structural assumptions before ordering or cutting.
Calculated result
0.44 yd³
Bedding sand volume is the compacted layer depth times the covered area. Mass uses the entered density; damp concrete or bedding sand is typically near 1.35 t/yd³ (1.6 t/m³).
- Estimated mass
- 0.60 t
- Bags
- 24
- Coverage area
- 144 ft²
Printable result and cut list
| Item | Value | Job note |
|---|---|---|
| Primary result | 0.44 yd³ | Verify before cutting or ordering. |
| Estimated mass | 0.60 t | Calculated from the entered dimensions. |
| Bags | 24 | Calculated from the entered dimensions. |
| Coverage area | 144 ft² | Calculated from the entered dimensions. |
| Formula | Expression | Note |
|---|---|---|
| Primary formula | volume = length × width × depth | Round the final result, not each intermediate value. |
How the sand calculation works
Enter the job dimensions in the form. The calculator normalizes the values, applies volume = length × width × depth, and updates the main result, supporting values, diagram labels, and print table together.
The first displayed example is calculated during the static build. That makes the formula and a complete numerical result readable in page source, while the browser script handles later input changes.
Worked example
The prefilled values form a complete sand volume and estimated mass example. Change one field at a time and compare the updated result with the formula table to catch unit or transcription mistakes.
Common errors to avoid
- Mixing nominal and actual material dimensions.
- Entering diameter where the formula expects radius, or total run where it expects one tread.
- Rounding every intermediate value instead of rounding the final purchase or cut quantity.
- Treating a planning result as a stamped structural design or local-code approval.
Which sand the layer needs
| Type | Typical use | Planning density |
|---|---|---|
| Concrete / sharp sand | Paver bedding, screed, mortar mix | 1.35 t/yd³ (1.6 t/m³) |
| Masonry sand | Mortar for brick and block | 1.30 t/yd³ (1.55 t/m³) |
| Polymeric joint sand | Paver joints only | Sold by bag coverage |
| Play sand, washed | Sandboxes | 1.25 t/yd³ (1.5 t/m³) |
Paver bedding depth
- A screeded bedding course is normally 1 in (25 mm) and should not be thicker than 1.5 in (40 mm), because deep sand keeps settling under load.
- Bedding sand sits on top of a compacted crushed-stone base — calculate that layer separately.
- Joint sand is ordered from the manufacturer's coverage table, not from this volume result.
- Add 10 percent for screed loss, wind, and the sand left in the barrow.
Frequently asked questions
Does the sand calculator work without JavaScript?
The default worked result, formula, diagram, and result table are included in the served HTML. JavaScript is only needed to recalculate after you change an input.
Which unit should I use?
Use the imperial page for US customary inputs or open the metric twin for millimetres, centimetres, and metres.
Can I use the result for purchasing material?
Use it as a quantity and layout check, then add the stated waste allowance and confirm package coverage, stock dimensions, and field conditions.
Does this replace building code or an engineer?
No. The calculator is a planning aid. Current local code, product documentation, and a qualified engineer govern structural and life-safety decisions.
How much sand do I need under pavers?
Use a 1 in (25 mm) screeded bedding layer. A 100 ft² patio needs about 8.3 ft³, roughly 0.31 cubic yards, plus an allowance for screed loss.
How much does a cubic yard of sand weigh?
Dry concrete sand is about 2,600 to 2,700 lb (1.3 t) per cubic yard; damp sand is heavier. Check the trailer or truck rating before loading bulk sand.
Can I use this for mortar or concrete sand quantities?
It gives the volume of a sand layer. Mortar and concrete mixes are proportioned by mix ratio, so take the sand share from the mix design rather than from a spread depth.
Related pages
More calculators
iPhone companion
Keep jobsite math available offline
The website calculators and charts stay free. The BuildMath iPhone app keeps its supported construction calculations available when the jobsite has no connection.
View BuildMath on the App StoreLast reviewed .