Measure the finished area
Use length × width for a rectangle, π × radius² for a circle, or enter a known square-foot or square-metre area.
LANDSCAPE · DRIVEWAY · PATIO · DRAINAGE
Stone Calculator — Volume, Weight & Cost
Calculate how much crushed stone, gravel or aggregate a project needs. See cubic yards, tons, bags, truck loads and material cost in US or metric units.
Four area methodsCustom densityCost and logisticsNo sign-up
01 · Project inputs
Measure the stone layer
Measure the finished area. The selected bulk density is an estimate; supplier density, moisture and compaction can change delivered weight.
Quick project presetsLoad a common starting size, then edit it.
Bags are rounded upTruck loads are rounded upConfirm the order with your supplier
QUICK ANSWER
How much stone do I need?
Find the compacted project volume, add an allowance for waste and uneven ground, then multiply by the stone's loose bulk density. For a rectangle, volume is length × width × depth. The calculator converts the result to cubic yards, cubic metres, short tons and metric tonnes so you can compare it with the supplier's sales unit.
FROM MEASUREMENTS TO AN ORDER
Calculate crushed stone in four steps
Keep finished dimensions, delivery units and the supplier's material specification separate. That prevents the most common quantity errors.
Apply the required depth
Use the compacted design thickness—not the height of a loose pile. Convert inches or centimetres before multiplying.
Convert volume to weight
Multiply adjusted volume by bulk density. Particle size, moisture, source and compaction can all change the actual weight.
Plan cost and delivery
Apply price per mass or volume, then round bags and truck loads up. Confirm minimum orders, payload and delivery fees separately.
PLANNING DENSITIES
Crushed stone, gravel and sand presets
These are transparent planning values, not product certificates. Select Custom density when your quarry or supplier provides a tested value.
Materialkg/m³Planning note
1,600A practical planning average for loose crushed aggregate.
1,680Typical loose planning density; gradation and moisture change the delivered weight.
1,550Use the quarry ticket or supplier density for purchasing.
1,780Rounded, closely packed gravel is often heavier per loose volume.
1,650Particle size and voids can change bulk density substantially.
1,500Compaction and moisture are especially important for fine material.
1,600A typical loose dry value.
1,900Water content can raise delivered weight.
COMMON USES
A rock calculator for real project shapes
Use the same geometry for many landscaping and construction estimates, but follow the project's required section and material grade.
Stone driveway calculator
Estimate a rectangular driveway base, add compaction allowance and compare tons with the truck payload.
Patio and paver base
Calculate the aggregate layer under a patio or paver field from its finished footprint and specified base depth.
Drainage stone
Use a trench rectangle or known volume, then select a supplier-confirmed clean-stone density.
Limestone and #57 stone
Choose a practical preset for early planning and replace it when the product sheet or scale ticket is available.
ORDERING NOTE
The supplier's density wins
Bulk density is not the solid rock density. It includes voids between particles and changes with gradation, moisture and compaction. Use this estimate for planning, then confirm the named product, coverage, order unit, payload limit and delivered quantity with the quarry or landscape supplier.
RELATED CALCULATORS
Continue the measurement
Move between material weight, land area and physical dimensions without sending your project data to another site.
PUBLIC REFERENCES
Units and aggregate context
These government sources explain construction aggregates, metric volume and public aggregate data. They do not prescribe a density for a specific delivered product.
Reviewed 31 July 2026- U.S. Geological SurveyCrushed Stone Statistics and InformationPublic background on crushed stone as a construction, agricultural and industrial raw material.
- National Institute of Standards and TechnologySI Units — VolumeThe U.S. measurement reference explains cubic metres and common metric volume relationships.
- U.S. Geological SurveyAggregates Time Series DataPublic aggregate data standardized to metric tonnes and dollars per tonne.
COMMON QUESTIONS
Stone calculator: frequently asked questions
Answers about crushed stone quantity, 3/4-inch aggregate, tons, cubic yards, coverage, depth, waste and delivery.
How much crushed stone do I need?
Multiply the project area by the compacted stone depth to find volume, add a waste or compaction allowance, then convert that adjusted volume to weight with the selected bulk density. This calculator performs each step and shows cubic yards, cubic metres, short tons and metric tonnes.
How much 3/4-inch stone do I need?
Enter the finished length, width and depth, select #57 / 2B crushed stone as a practical planning preset, and add the allowance recommended by your supplier or installer. The name used for 3/4-inch aggregate varies by region, so confirm the delivered product before ordering.
How many square feet will one ton of stone cover?
Coverage depends on depth and bulk density. At the same density, one ton covers about twice as much area at 2 inches deep as it does at 4 inches deep. Use Known area or Rectangle mode and adjust the dimensions until the result is close to one ton.
How many cubic yards of crushed stone are in a ton?
There is no single exact conversion because loose bulk density varies by rock type, gradation, void space, moisture and compaction. A common planning range is roughly 1.2–1.5 short tons per cubic yard, but the supplier's product density and scale ticket should control the order.
How deep should crushed stone be for a driveway or patio?
Required depth depends on soil, drainage, vehicle loads, climate, aggregate gradation and local construction practice. The preset sizes are examples only. Use the depth specified by the project designer, contractor or local guidance.
Should I add a waste or compaction allowance?
Usually yes. Uneven subgrade, spillage and compaction mean the delivered volume may need to exceed the simple geometric volume. Ten percent is a useful starting estimate, but difficult grades, thick lifts or supplier guidance may justify a different allowance.
Can I use the stone calculator for a circular area?
Yes. Choose Circle, enter the diameter and depth, then select the material. For irregular shapes, divide the project into rectangles and circles, calculate each area, and add the results.
Does this calculate crushed stone cost and truck loads?
Yes. Enter a price per short ton, metric tonne, cubic yard or cubic metre. Add a bag weight and truck capacity to see rounded-up bag and load counts. Delivery, taxes, minimum order fees and spreading are not included unless they are part of the price you enter.