Bulk materials / Material estimator
Sand Calculator
Estimate sand for a rectangular area. Set your depth, bulk density, and extra allowance.
Your material estimate
Live resultSand needed · Order volume
0.68yd³
18.33 ft³
Volume comes from your dimensions. Weight is an estimate based on the bulk density below.
- Area
- 100.00 ft²
- Base volume
- 0.62 yd³16.67 ft³
- + 10% extra
- 0.06 yd³
- Order volume
- 0.68 yd³
- Bulk Density Used
- 100 lb/ft³
No supplier minimum or purchase increment is applied. Confirm how your supplier sells the material.
Understand your estimate
How the Sand Calculator Works
The calculator multiplies the length, width, and depth of the area to find the required sand volume. An adjustable extra-material allowance is then added to estimate the amount to order.
Estimated weight is calculated from the sand's bulk density. Because sand density varies with material, moisture, gradation, and compaction, weight should be treated as an estimate.
The formula
- Area = length × width
- Order volume = base volume × (1 + extra %)
- Extra volume = order volume − base volume
- Estimated weight = order volume × bulk density
- Volume-based cost = order volume × quoted price per volume
- Weight-based cost = estimated weight × quoted price per weight
All dimensions are converted to meters before calculation. Volume is kept in cubic meters and mass in kilograms. Display values are rounded only after the calculation; supplier purchase increments are not applied.
Bulk density affects weight
The default bulk density is 100 lb/ft³ (about 1,602 kg/m³), a typical planning value for dry sand. If your supplier provides a specific density or weight per cubic yard, use that value instead. Divide a weight in pounds per cubic yard by 27 to enter lb/ft³.
Changing bulk density changes the estimated weight and weight-based cost. It does not change the geometric volume.
Extra material & compaction
A 10% extra allowance is included by default and is editable from 0% to 100%. It can help account for spreading loss, uneven surfaces, settling, and minor material variation.
The calculator does not automatically adjust for project-specific compaction. If your project requires a compacted finished depth, follow the material supplier or project specification and adjust the input or extra-material allowance accordingly.
Methodology & assumptions
This is a rectangular-area material quantity estimate. Volume is geometric; weight depends on your chosen bulk density. Uneven depth and irregular shapes are outside this version.
A short ton is 2,000 lb; a metric tonne is 1,000 kg. The price basis is independent of the display system. Optional cost is shown in USD and excludes tax, delivery, and labor.
This tool does not recommend sand types, material suitability, bag quantities, structural design, code compliance, or project-specific compaction.
Frequently asked questions
How much sand do I need?
Measure the rectangular area's length, width, and desired depth. Their product is the base volume. Add an extra allowance appropriate to your supplier or project specification to estimate the order volume.
How do I calculate cubic yards of sand?
Convert depth to feet, multiply length × width × depth in feet, then divide cubic feet by 27. This calculator handles the unit conversion and adds your selected extra allowance.
How much does a cubic yard of sand weigh?
Weight depends on bulk density. At the editable default of 100 lb/ft³, one cubic yard (27 ft³) weighs an estimated 2,700 lb, or 1.35 short tons. Moisture and material conditions can change that estimate.
Why does sand density vary?
Bulk density includes the space between grains. Material type, grain size and gradation, moisture, and compaction can all affect the weight of a given volume. Use supplier data when available.
How much extra sand should I order?
The calculator starts with an editable 10% allowance. The appropriate amount depends on your surface, spreading losses, settling, and project requirements. Confirm the allowance with your supplier or contractor; there is no automatic project recommendation.
Does this calculator account for compaction?
It does not apply an automatic compaction factor. For a compacted finished depth, use the material supplier or project specification to adjust the input depth or extra allowance.