FREE · PRIVATE · INSTANT

Crushed Stone Calculator

Crushed Stone Calculator estimates crushed stone cubic yards and tons for compacted bases, driveways, pads, and drainage. Enter job dimensions in U.S. customary units, adjust supplier assumptions, and get purchase-ready quantities instantly.

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HOW IT WORKS

Formula and assumptions

Convert every dimension to feet, multiply length × width × depth × quantity, apply a separate compaction allowance where shown, divide by 27, then apply waste.

Dimensions describe finished material volume.
Bulk density, bag yield, and supplier pricing remain editable.

FIELD CHECK

Before you order

Enter compacted thickness and replace the separate compaction allowance with supplier or field-test data for the selected gradation.

Worked example

Example: with length 50 ft, width 12 ft, depth / thickness 4 in, matching sections 1, the crushed stone calculator returns 9.54 cu yd for material to order. The supporting check is truck loads: 1 loads. Replace the prefilled measurements and supplier assumptions with the project values before ordering.

PROJECT GUIDE

Using this calculator well

WHEN TO USE IT

Best use of this calculator

Use the result as a planning estimate, then verify field measurements and product-specific data before ordering or building.

INPUTS EXPLAINED

What each input means

Length: Enter the measured value and choose the matching unit (ft, in, yd, m, cm).
Width: Enter the measured value and choose the matching unit (ft, in, yd, m, cm).
Depth / thickness: Enter the measured value and choose the matching unit (in, ft, cm, mm).
Matching sections: Enter the project value used by the calculation.
Waste allowance: Enter the project value in %.
Compaction allowance: Extra loose material needed to reach the entered compacted depth; applied separately from waste.
Bulk density: Enter the project value in lb/cu ft.
Truck capacity: Enter the project value in cu yd.
Price per ton: Enter the project value in $.

COMMON MISTAKES

Checks that prevent bad estimates

Mixing units or entering a measurement in a different unit than the selected field unit.
Using a planning default when the exact manufacturer or supplier specification is available.
Rounding intermediate measurements too early instead of rounding the final purchase quantity.
Ignoring waste, compaction, cuts, laps, settlement, or full-package rounding where the project requires them.

SOURCES & REVIEW

How this estimate is supported

The implemented formula, assumptions, and worked example on this page are the calculator-specific reference. BuildYard's broader rules are documented in the Calculation Methodology and Sources & References.

For material density, coverage, yield, dimensions, package quantity, price, and other product-specific values, the current manufacturer or supplier specification should override a planning default.

Last reviewed: September 15, 2026, as part of the site-wide calculator workflow validation pass. See the BuildYard Changelog.

LEARN THE METHOD

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COMMON QUESTIONS

Crushed Stone Calculator FAQ

What does the Crushed Stone Calculator calculate?

It converts the measurements for compacted bases, driveways, pads, and drainage into the buying units normally used for crushed stone cubic yards and tons, with the relevant waste, package, weight, or cost outputs shown on the result card.

How accurate is this crushed stone calculator?

The geometry is calculated from the values you enter. Final ordering accuracy still depends on field measurements, supplier density or coverage, product dimensions, compaction, cuts, and the selected allowance.

What should I verify for compacted bases, driveways, pads, and drainage?

Enter compacted thickness and replace the separate compaction allowance with supplier or field-test data for the selected gradation. Confirm the selected product, field conditions, and purchasing increments before placing the order.

Should I round the result up?

Yes for indivisible buying units such as bags, sheets, bundles, pallets, boxes, bars, and truck loads. The calculator rounds those purchase quantities up automatically.

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