Aggregate Calculator
Rectangle / Square
Feet
Inches
Meters
Centimeters
Gravel (105 lb/ft³)
Sand (100 lb/ft³)
Crushed Stone (95 lb/ft³)
Asphalt (110 lb/ft³)
Concrete (150 lb/ft³)
How to Use the Aggregate Calculator
This calculator helps you estimate the volume and weight of aggregate (such as sand, gravel, or crushed stone) needed for your construction or landscaping project. Follow these simple steps:
- Enter Dimensions: Input the length, width, and depth of the area you need to fill.
- Select Units: Choose the unit of measurement you used for the dimensions (feet, inches, meters, or centimeters). The calculator will handle the conversion.
- Choose Aggregate Type: Select the material you'll be using. Each material has a different density, which affects the total weight calculation.
- Set Wastage Factor: It's wise to order extra material to account for compaction and potential spillage. A standard wastage factor is 5-10%.
- Calculate: Click the "Calculate" button to see your results.
Understanding the Calculation
The calculation process involves a few key steps to determine the required amount of material.
- Volume Calculation: The basic formula for the volume of a rectangular area is:
Volume = Length × Width × Depth. The calculator first converts all your dimensions into a standard unit (feet) before performing this calculation to find the volume in cubic feet. - Unit Conversion: The result is often needed in cubic yards, as this is a common unit for ordering bulk materials. The conversion is:
1 Cubic Yard = 27 Cubic Feet. - Weight Calculation: To find the weight, the volume is multiplied by the material's density:
Weight = Volume × Density. Density is mass per unit of volume (e.g., pounds per cubic foot). - Wastage Adjustment: Finally, the calculated volume and weight are increased by the wastage percentage to give you a more realistic order quantity:
Total Amount = Base Amount × (1 + Wastage Percentage / 100).
Example Calculation
Let's say you're building a gravel driveway that is 20 feet long, 10 feet wide, and needs a 4-inch deep layer of gravel.
- Convert Depth to Feet: 4 inches ÷ 12 = 0.333 feet.
- Calculate Volume (Cubic Feet): 20 ft × 10 ft × 0.333 ft = 66.6 cubic feet.
- Calculate Volume (Cubic Yards): 66.6 ft³ ÷ 27 = 2.47 cubic yards.
- Calculate Weight: Assuming gravel has a density of 105 lb/ft³, the weight is 66.6 ft³ × 105 lb/ft³ = 6,993 lbs.
- Convert Weight to Tons: 6,993 lbs ÷ 2000 = 3.5 US tons.
- Add 10% Wastage: You should order approximately 2.47 × 1.10 = 2.72 cubic yards, or 3.5 × 1.10 = 3.85 US tons.
Common Aggregate Densities
The weight of your material depends heavily on its density. Below are typical dry densities for common aggregates.
| Material | Density (lb/ft³) | Density (kg/m³) |
|---|---|---|
| Gravel | 105 | 1680 |
| Sand (Dry) | 100 | 1600 |
| Crushed Stone | 95 | 1520 |
| Asphalt (Paving) | 110 | 1760 |
| Concrete | 150 | 2400 |
Calculation Results
"; resultHTML += "Base Amount (before wastage):"; resultHTML += "- ";
resultHTML += "
- Volume: " + volumeInCubicFeet.toFixed(2) + " cubic feet "; resultHTML += "
- Volume: " + volumeInCubicYards.toFixed(2) + " cubic yards "; resultHTML += "
- Weight: " + weightInPounds.toFixed(2) + " pounds "; resultHTML += "
- Weight: " + weightInUSTons.toFixed(2) + " US tons "; resultHTML += "
- ";
resultHTML += "
- Volume: " + totalVolumeFeet.toFixed(2) + " cubic feet "; resultHTML += "
- Volume: " + totalVolumeYards.toFixed(2) + " cubic yards "; resultHTML += "
- Weight: " + totalWeightPounds.toFixed(2) + " pounds "; resultHTML += "
- Weight: " + totalWeightTons.toFixed(2) + " US tons "; resultHTML += "