Crushed Stone Calculator

This crushed stone calculator helps you plan driveway base, patio sub-base, and compacted aggregate fills fast. Enter dimensions, depth, density, and waste, then the crushed stone calculator returns cubic yards, tons, truckload guidance, and cost range so you can compare supplier quotes with confidence.

1. Measure length and width in feet. For irregular areas, split the footprint into rectangles, calculate each piece, then add the totals before running the crushed stone calculator.
2. Set compacted depth in inches. Most residential projects use 3 to 4 inches for top-dress layers and 4 to 6 inches for driveway base.
3. Enter density in tons per cubic yard. Use 1.5 as a practical default for many crushed stone products, then update if your supplier provides ticket density.
4. Set waste based on site conditions. Use about 8% for clean shapes, 10% for most projects, and up to 12% on uneven grades or jobs with hand spreading.
5. Click Calculate crushed stone and review cubic yards, tons, truckloads, and budget range before placing the order.

Pro tip: Measure depth at five or more points across the site, not just one center point. This catches low pockets that can add one or more tons to a medium driveway order.

Real-world example: crushed stone for a patio base

A 12 by 14 foot patio at 4 inches of compacted 3/4 inch crushed stone with 10% waste: area = 168 sq ft, depth = 0.333 ft, base volume = 2.07 cubic yards, total with waste = 2.28 cubic yards, weight = 3.42 tons at 1.5 tons per yard. That fits comfortably in one delivery and costs around $103 to $222 at 2026 prices. A plate compactor rental adds $60 to $90 for the day.

Calculating crushed stone for circular or irregular areas

For a circular area, calculate the square footage first: area = 3.14 x radius x radius. Enter that total in square feet as length and set width to 1 foot. The crushed stone calculator multiplies length by width, so setting width to 1 passes area directly into the yardage calculation.

Example: a 12-foot diameter circle has a 6-foot radius. Area = 3.14 x 6 x 6 = about 113 sq ft. Enter 113 for length and 1 for width, then set depth and click Calculate crushed stone. For an L-shaped or curved patio, split the footprint into rectangles, calculate each piece in square feet, add the totals, and enter the sum the same way.

Typical crushed stone depth by project type

Use this table before you run the crushed stone base calculator. Depth assumptions control total cost more than most first-time estimators expect.

If the crushed stone calculator result lands close to a minimum truck charge, round up the first order.

Assumptions used in this crushed stone calculator

This calculator assumes a flat, rectangular project area with uniform depth. Density defaults to 1.5 tons per cubic yard, which fits most 3/4 inch crushed stone and crusher run products. The waste factor applies evenly across the entire area and does not account for edge containment or retaining walls that may reduce spillage.

Cost estimates use $30 to $65 per ton based on 2026 US averages and do not include delivery fees, site prep, or compaction equipment rental.

Limitations and when results may vary

Results can differ from actual material needs when the subgrade is uneven, soft, or sloped. Soft clay soil absorbs more stone during compaction, sometimes adding 15% to 25% beyond the calculated total. Very large projects (over 100 cubic yards) should verify density directly with the quarry ticket because regional stone sources vary.

This calculator does not adjust for #2 crushed stone (2 inch crushed stone) or 1/2 inch crushed stone automatically. Enter the correct density from your supplier data sheet for specialty sizes to get accurate tonnage.

The crushed stone calculator follows a clear sequence: convert depth, calculate volume, apply waste, then convert to tons and cost. Keeping each step visible makes it easy to cross-check supplier math when a quote looks off. This same formula works whether you need a driveway crushed stone calculator, a patio crushed stone calculator, or a general crushed stone base calculator.

This crushed stone calculator uses $30 to $65 per ton as a 2026 planning range. Treat this as a budget baseline, not a final quote. To convert yards to weight for crushed stone, multiply your total cubic yards by the density value for your stone type.

Example: calculating crushed stone for a driveway

Given:

• Driveway area = 40 ft × 16 ft = 640 sq ft
• Depth = 4 inches
• Stone type = 3/4 inch (also called 3 4 inch) crushed stone at 1.5 tons per cubic yard
• Waste = 10%

Calculations:

• Depth (ft) = 4 / 12 = 0.333
• Volume (cu ft) = 640 × 0.333 = 213.3
• Base cubic yards = 213.3 / 27 = 7.90
• Total with 10% waste = 7.90 × 1.10 = 8.69 cubic yards
• Estimated weight = 8.69 × 1.5 = 13.03 tons
• Estimated cost = $391 to $847 at $30 to $65 per ton

If the yard quotes by cubic yard, use the crushed stone calculator yard result directly. If they quote by ton, use tonnage plus your waste factor and ask whether their ticket density differs from your assumption.

For a full breakdown of crushed stone planning by project type, including tons-to-yards conversion and compaction factors, see our crushed stone planning guide.

Crushed stone type and density planning guide (2026)

Set density before finalizing your crushed stone calculator order.

Mistakes that throw off crushed stone estimates

First, people use loose depth but expect compacted performance. Always estimate and compact in lifts, then check final depth.

Second, people skip waste on irregular edges and transitions. Even skilled crews lose material during grading and shaping.

Third, people compare supplier quotes in only one unit. Keep both tons and cubic yards visible so your crushed stone calculator output catches hidden conversion gaps.