Crusher Run Calculator: Free Online Crusher Run Calculator

Use our free crusher run calculator to figure out how much crusher run gravel you need for a driveway, base course, or general construction sub-base. Enter your area's length, width, and depth to get the coverage area, volume in cubic yards, and estimated weight in tons.

How to use this calculator.

1. Enter the area length and width. Measure the footprint you plan to cover, in feet.
2. Enter the depth. Use 4 inches for a driveway base under gravel or pavers, and 6-8 inches under asphalt.
3. Review your results. The calculator returns area (sq ft), volume (cu yd), and weight (tons) instantly.
4. Order by the ton. Most quarries sell crusher run by weight, so use the tonnage figure when placing your order.
5. Plan your compaction lifts. Break the total depth into 2-inch lifts for the actual install.

How do you calculate crusher run gravel quantity?

The calculator converts your dimensions to a volume, then applies a standard weight-per-volume factor for crusher run.

Area (sq ft) = Length (ft) × Width (ft)

Volume (cu yd) = Length (ft) × Width (ft) × Depth (in) ÷ 324

Weight (tons) = Volume (cu yd) × 1.3

Where:

• Length & Width: The dimensions of the area to be covered, in feet.
• Depth: The thickness of the crusher run layer, in inches.
• 1.3: The average weight of compacted crusher run in tons per cubic yard. Because the stone dust and fines fill the voids between larger stones, crusher run runs heavier per yard than clean, uniform gravel — typically 2,500-2,700 lb/cu yd.

Example calculation.

Scenario: You're building a 50 ft × 12 ft driveway base with 4 inches of crusher run.

1. Calculate the area: 50 ft × 12 ft = 600 sq ft.
2. Convert depth to feet: 4 in ÷ 12 = 0.333 ft.
3. Calculate volume in cubic feet: 600 sq ft × 0.333 ft = 200 cu ft.
4. Convert to cubic yards: 200 cu ft ÷ 27 = 7.41 cu yd.
5. Calculate weight: 7.41 cu yd × 1.3 = 9.63 tons.

Result: This driveway base needs about7.41 cubic yards, weighing roughly9.6 tons, of crusher run.

Tips from the field.

• Compact in 2-inch lifts. Dumping the full depth at once and compacting only the surface leaves a soft, unstable base underneath.
• Use 4-6 inches for driveways, 6-8 under asphalt.Thicker bases spread vehicle loads more evenly and resist rutting.
• Order 5-10% extra. Grading, spillage, and compaction settlement all reduce your effective coverage.
• Crusher run compacts tighter than clean gravel. The fines bind the stone together into a firm surface, which is why it's the standard choice for driveway and paver bases rather than drainage-focused clean stone.
• A light water spray helps compaction. Slightly damp crusher run compacts denser than bone-dry material.

Disclaimer: This calculator provides estimates for planning purposes only. Actual material requirements vary based on site conditions, gradation, compaction, and waste. For structural designs or load-bearing applications, consult a licensed civil engineer. PavementCalculator.com assumes no liability for material overages or shortages.