The Crush and Run Calculator helps estimate how much crush and run gravel (also known as crusher run) you need for a landscaping or construction project. This type of gravel is a mixture of crushed stone and stone dust, widely used for driveways, patios, and foundations.
Formula
The formula to calculate crush and run is:
CR = (A × D × W) ÷ 2000
Where:
CR = Crush and run in tons
A = Area in square feet
D = Depth in inches
W = Material weight in pounds per cubic foot
2000 is the conversion factor from pounds to tons.
How to Use
- Enter the area (in square feet) of the space to be covered.
- Enter the desired depth in inches.
- Input the weight of the material in pounds per cubic foot (typically around 120 for gravel).
- Click the “Calculate” button.
- The total required amount of crush and run in tons will appear in the result box.
Example
If you have a driveway of 500 square feet, with a depth of 4 inches, and the material weighs 120 pounds per cubic foot:
CR = (500 × 4 × 120) ÷ 2000
CR = 240,000 ÷ 2000 = 6 tons
So, you would need approximately 6 tons of crush and run.
FAQs
- What is crush and run gravel?
It’s a mixture of crushed stone and stone dust used in construction and landscaping. - Why is it called “crush and run”?
Because it is crushed and compacted to create a stable base that doesn’t shift easily. - How deep should I lay crush and run?
Typical depths range from 2 to 4 inches for most residential uses. - What is the weight of crush and run per cubic foot?
Approximately 120 pounds, though this can vary by material type. - Is crusher run good for driveways?
Yes, it forms a solid, long-lasting base. - How do I convert inches of depth to feet for calculation?
Divide the inches by 12 to get feet. - What does the “2000” in the formula represent?
It’s the number of pounds in a ton, used for conversion. - Can I use this calculator for crushed concrete?
Yes, as long as you input the correct weight per cubic foot. - Is crusher run the same as gravel?
Not exactly. It’s a combination of stone and dust, whereas gravel has more uniform stone sizes. - Will rain affect crush and run?
If properly compacted, it holds up well, but drainage is important. - Do I need a professional to install it?
It’s DIY-friendly for small areas, but pros are better for large projects. - Can I walk on crush and run?
Yes, it compacts well and makes a stable walking surface. - What tools do I need to spread it?
A wheelbarrow, shovel, and tamper or roller. - Do I need to tamp crush and run?
Yes, compacting ensures it stays firm and doesn’t shift. - Can this calculator help with budgeting?
Absolutely, it gives a solid estimate of the amount of material needed. - How accurate is the calculator?
It provides a close estimate, but rounding up is wise to avoid shortages. - Is this gravel suitable for foundation layers?
Yes, it’s commonly used for foundations and base layers. - Can I use this under concrete?
Yes, it’s often used as a stable base for concrete slabs. - Is crusher run eco-friendly?
It can be, especially if using recycled stone products. - Do suppliers sell in tons?
Most gravel suppliers sell by the ton, making this calculator highly practical.
Conclusion
The Crush and Run Calculator is a convenient tool for estimating the quantity of material required for your project. Whether you’re paving a driveway or preparing a solid base for another structure, this calculator helps save time, money, and effort by providing precise material estimates. Always round up slightly to accommodate for compaction and terrain variations.