Crusher Run Calculator: Tons, Yards, Truckloads, and Cost

How to Calculate Crusher Run

Quick answer: measure the area, multiply by the finished compacted depth, convert that volume to cubic yards, increase it to a planning loose order volume, and multiply by the supplier's loose bulk density. The calculator above follows that sequence instead of treating loose delivered material and finished compacted volume as the same thing.

Crusher run is also sold under regional names such as crush and run, dense graded aggregate, ABC, #21A, #411, quarry process, and road base. Those names are not guaranteed to describe an identical gradation in every market. If the supplier gives you a product density or local specification, use that information instead of relying on a generic conversion.

If your project uses another aggregate rather than crusher run, use the broader gravel calculator. If this base will support an asphalt surface, the Figuring Asphalt tonnage calculator can size the paving layer after you finish the base estimate.

Crusher Run Formula: Finished Volume to Order Tons

The default workflow uses four separate quantities so the result is easy to audit:

1. Finished volume: area × finished depth.
2. Planning loose volume: finished volume × (1 + loose-volume allowance).
3. Order volume: planning loose volume × (1 + optional extra material).
4. Order tons: order cubic yards × loose bulk density.

For a rectangular project measured in feet and inches, the shortcut is:

Finished cubic yards = Length × Width × Depth in inches ÷ 324

Then apply the allowance and supplier density. The calculator defaults to 1.42 short tons per loose cubic yard, which is about 105 pounds per cubic foot, plus a 15 percent loose-volume allowance. Those are planning inputs, not universal material properties. You can change both fields before calculating.

Worked Example: Crusher Run for a Driveway Base

Suppose a driveway section is 50 feet long, 12 feet wide, and the finished crusher run layer needs to be 4 inches deep. At the calculator defaults, the finished volume is 7.41 cubic yards. A 15 percent loose-volume allowance brings the planning loose volume to 8.52 cubic yards. Adding a 5 percent site margin gives 8.94 cubic yards to order.

At 1.42 tons per loose cubic yard, the exact estimate is about 12.70 tons. If the supplier sells in half-ton increments, the calculator rounds that up to a 13.0 ton recommended order. That rounded amount is deliberately shown separately from the mathematical estimate so you can see where the extra material came from.

How Much Area Does One Ton of Crusher Run Cover?

Coverage changes quickly with depth. The table below uses the calculator's 1.42 tons per loose cubic yard density and 15 percent loose-volume allowance, with no additional site-loss adjustment. It is a planning reference, not a supplier guarantee.

If you already know how many tons you have, switch the calculator to Coverage from tons on hand. It reverses the same assumptions and can also estimate the length of a driveway or path when you enter a width.

Crusher Run Cost Calculator: Use Local Pricing

Crusher run prices vary by quarry, stone source, region, order size, and delivery distance. Rather than publishing a national price that may not match your market, this calculator lets you enter the supplier's price per ton and delivery fee per load. The cost result uses the rounded order quantity, because that is closer to what you will actually ask the supplier to deliver.

The cost formula is simple: rounded order tons × price per ton + truckloads × delivery fee. If you leave either price field blank, the calculator still returns the material quantity without inventing a cost.

Choosing the Right Depth for a Crusher Run Driveway

A calculator can size material once you know the required finished depth, but it should not choose the structural design for you. Base thickness depends on traffic, subgrade strength, drainage, frost conditions, and the pavement or surface above it. Use the depth in your project specification, installer recommendation, or local standard. Our guide to road base material explains how the base layer works and why soil and traffic change the design.

For asphalt projects, size the base first and then calculate the surface separately. The asphalt driveway cost calculator can help with the next budgeting step once your base quantity is understood.

Why Density Matters More Than a Fixed Tons-per-Yard Rule

Bulk aggregate is not a solid block of rock. The measured weight of a cubic yard changes with gradation, moisture, particle shape, and how tightly the material is packed. ASTM C29/C29M specifically distinguishes bulk density in loose and compacted conditions and notes that stockpile and hauling conditions can change mass-to-volume relationships. That is why this page exposes the density input instead of hiding one conversion behind the result. See the ASTM C29/C29M bulk density method for the underlying measurement concept.

If your quarry says its crusher run weighs 1.35, 1.45, or another value in tons per cubic yard, enter that supplier value. The calculator will immediately recalculate tons, coverage, loads, and cost from the same project dimensions.

Common Crusher Run Estimating Mistakes

• Using loose depth as finished depth: the depth field on this page is the target compacted layer, not the height of a fresh loose pile.
• Applying compaction twice: the loose-volume allowance already increases the finished target volume. Do not add a second compaction factor somewhere else unless your supplier or project method specifically requires it.
• Assuming every crusher run product weighs the same: replace the default density when you have a supplier value.
• Rounding too early: the calculator keeps the exact estimate separate and rounds only the final recommended order.
• Guessing truck payload: truckload count is a planning estimate. Confirm the supplier's actual payload, minimum load, and delivery rules.

Frequently Asked Questions

How much crusher run do I need?
Multiply the project area by the finished compacted depth to get the target volume. Then convert that target to an estimated loose order volume, multiply by the supplier bulk density, and add any site margin you choose. The calculator performs those steps and can round the result to a supplier order increment.

Is crush and run the same as crusher run?
Crush and run is a common regional name for crusher run, a dense graded crushed aggregate containing larger stone and fines. Supplier gradations and local product names still vary, so confirm the product specification before ordering.

How many tons are in a cubic yard of crusher run?
There is no universal conversion because bulk density changes with stone type, gradation, moisture, and handling. The calculator uses 1.42 short tons per loose cubic yard as a planning default and lets you replace it with the value from your supplier.

How much area does one ton of crusher run cover?
At the calculator defaults of 1.42 tons per loose cubic yard and a 15 percent loose-volume allowance, one ton covers about 66 square feet at 3 inches finished depth, about 50 square feet at 4 inches, and about 33 square feet at 6 inches before any separate site-loss adjustment.

Why does the calculator use a loose-volume allowance?
Your project depth describes the finished compacted layer, while crusher run arrives loose. The allowance increases the finished target volume to a planning order volume. It is adjustable because real compaction behavior depends on the aggregate, moisture, equipment, subgrade, and supplier.

Can I use this as a crush and run driveway calculator?
Yes. Enter the driveway dimensions and specified finished base depth, then replace the planning density with supplier data when available. The calculator returns cubic yards, exact tons, a rounded order, truckloads, cost, and coverage per ton.