Crushed Stone Calculator

Using our crushed stone calculator, you can find the quantity and weight of the crushed stone or gravel that you'll need to layout or fill an area.

The following article discusses what crushed stones are, their different sizes, and how we can use these crushed stones.

You're then given a guide on how to use the crushed stone calculator for calculating crushed stone in tons or yards while also sharing the formula for manually calculating the crushed stone in yards, then helping you convert that into tons.

Using our tool, you'll be able to calculate how much crushed stone you need for your next project. 😊

When processed together, several different rock fragments make up crushed stones, also called crush for simplicity. The most commonly found rocks of mixed qualities and quantities in crushed stones are:

• Argillite;
• Dolomites;
• Granites;
• Limestones;
• Marbles;
• Sandstones;
• Slates;
• Traprocks;
• Quartzite; and
• Volcanic cinder.

Using crushers, we can crush stones in various forms and sizes. Different crush sizes can have different uses.

Here's a list of standard crush sizes with their uses:

• Stone dust – Used in concrete block fabrications, filling walls, patching holes, and building smooth pavements.

• Up to ¹/₄″ – Used in barns, ground fillers, horse stables, tennis courts, and walkways.

• Up to ¹/₂″ – Mixed in asphalt and concrete for roads, water tank beddings, filtration, and various environmental applications, such as landscaping and building.

• Up to ³/₄″ – Used in bedding for large pipes, drainage, driveways, farm roads, french drains, path fillers, and slab bases.

• Up to 1″ – Best suited for pavements, road bases, and jogging tracks.

• Up to 1¹/₄″ – Used as a base material for driveways, rough terrain pads, and temporary paths for heavy-duty trucks at construction sites.

• Up to 2″ – Drainage, dry wells, septic systems, and railroad tracks.

• Up to 4″ – Drain outfall areas, heavy-duty haul roads, septic tanks, and slopes.

That's how we use crushed stones of varying sizes.

Here's how you can use the crushed stone calculator:

1. Select your surface shape, e.g., Rectangular.

2. In surface length, enter the length of your surface, e.g., 12 feet.

3. In surface width, enter the width of your surface, e.g., 8 feet.

4. Now, enter in depth, how deep do you want to fill the layout of your surface, e.g., 3 inches.

5. The waste factor tells how much crushed stone wastes during the layout process, e.g., 10% (default).

Once you've entered the above information, you get the following:

6. The required quantity of crushed stone for your layout, i.e., 0.98 cubic yards.

7. The estimated weight of this crushed stone, i.e., 1.5 tons.

Next, let's look into how we calculate the crushed stone quantity and weight manually.

Here are the formulas that we use to calculate how much crushed stone we need manually:

For square or rectangular surfaces:

• $S = (L \times W \times D) / 27$

And for circular or elliptical surfaces:

• $S = (\pi \times \frac{L}{2} \times \frac{W}{2} \times D) / 27$

where:

• $S$ – The required amount of crushed stones in cubic yards;
• $L$ – Length in feet, where we want to lay out the crush;
• $W$ – Width in feet, of the same surface for laying out the crush;
• $D$ – The depth in feet for the area which we want to fill with the crush;
• $\pi$ – Math constant with a value of 3.1416 approx; and
• $27$ – Conversion factor from cubic feet to cubic yards.

To consider the waste factor in our total, we divide the result by 10 and sum it to the original value:

• $S_T = S + (S / 10)$

Let's take an example of finding out how much crushed stone we require for our patio of 15′ × 11′, with a depth of 2″.

Placing the values in the formula, we get:

$S = (15 \times 11 \times 0.167) / 27 = 1.02$

So, we require about 1.02 cubic yards without considering the waste factor.

To consider the waste factor, we add an additional 10% to our total:

$S_T = 1.02 + (1.02 / 10) = 1.12$

And thus, the total amount of required crushed stone is about 1.12 cubic yards.

Multiplying the result by 1.5, we get the required weight of our crushed stone as 1.7 US tons.

Also, check out our simple gravel driveway calculator to determine the required amount of gravel for your driveway.