Choose area/depth or known yards.
Calculate aggregate for driveways, pads, walkways, drainage, and compacted base projects using a common 3/4-inch stone planning density.
Verified formulaEditable presetsUS + metric
Purpose-built estimator
Project measurements
Choose project area or a direct cubic-yard conversion.
Surface area covered by 3/4 inch stone.
Finished layer depth.
Changes default density and compaction behavior.
Editable bulk density for the selected product.
Extra loose material for compacted thickness.
Percent added for cuts, spillage, edge cleanup, and small estimating errors.
Optional supplier price used to estimate material cost before delivery fees and taxes.
3/4 inch stone layer
- 1Surface course
- 23/4 inch stone
- 3Compacted thickness
- 4Subgrade
How to use this calculator
Read full measuring guide Measure, verify, and order
Measure the surface area and depth, then choose clean stone or stone with fines before ordering.
Select clean stone or stone with fines.
Confirm density and compaction allowance.
What each input means
Starting measurement
Choose project area or a direct cubic-yard conversion.
Use the method that matches your measurement.Project area
Surface area covered by 3/4 inch stone.
Unit: sq ft or m2. Measure total square footage.Known volume
Known cubic yards to convert.
Unit: cu yd. Use plan volume or supplier yardage.Stone depth
Finished layer depth.
Unit: in or cm. Measure specified thickness in inches.Product type
Changes default density and compaction behavior.
Pick the product your supplier is selling.Supplier density
Editable bulk density for the selected product.
Unit: lb/ft3 or kg/m3. Use supplier tons per cubic yard when available.Compaction allowance
Extra loose material for compacted thickness.
Unit: percent. Higher for stone with fines, lower for clean stone.Extra / waste
Percent added for cuts, spillage, edge cleanup, and small estimating errors.
Unit: percent. Use 5 percent for simple square work and 10 percent or more for irregular work.Price per ton
Optional supplier price used to estimate material cost before delivery fees and taxes.
Unit: USD per US ton. Enter the quoted material price per US short ton. Leave 0 if you only need quantity.Check the calculation
Example: a 12 ft by 24 ft pad at 4 inches deep contains about 3.56 cubic yards before allowances.
A 12 × 24 ft area at 4 inches deep contains 3.56 compacted cubic yards before allowances.
Total loose order 4.35 cu yd Total weight 6.45 US tons
Volume = area x depth, or known yards. Product type changes starting density and compaction.
Assumptions to check
- Specify clean stone or stone with fines according to the project.
- Stone with fines compacts differently from washed stone.
- Use the supplier's bulk density for the closest weight estimate.
- Does not certify gradation.
- Does not design pavement thickness.
- Crusher-run and clean stone should not be swapped blindly.
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Frequently Asked Questions
What does this 3/4-inch crushed stone calculator calculate?
It uses project-specific inputs and the formula shown below. Volume = area x depth, or known yards. Product type changes starting density and compaction.
Are the presets exact specifications?
No. Presets are editable planning starting points. Confirm depths, materials, and densities with the supplier, manufacturer, or project designer.
Why can delivered weight differ?
Bulk density varies by supplier and moisture level. Moisture, gradation, compaction, and scale accuracy can change the delivered weight.