Length (ft) Enter the length of the area in feet (e.g., 20)

Width (ft) Enter the width of the area in feet (e.g., 10)

Depth (in) Enter the depth of gravel in inches (e.g., 4 for a typical path)

Quick Examples:

Small Garden Path Driveway Base Layer

Calculate Clear

This calculator is for informational purposes only. Verify results with appropriate professionals for important decisions.

Use this free online Gravel Calculator to calculate your gravel volume. Simply enter your length, width, and depth to instantly get results in cubic yards and cubic feet. This helps you estimate how much gravel to order for landscaping and construction projects.

How Gravel Volume Is Calculated

The calculator finds gravel volume by treating your area as a rectangular box. It multiplies the length by the width to find the surface area. Then it converts the depth from inches to feet and multiplies by the area. Finally, it converts cubic feet to cubic yards, which is how gravel is typically sold.

This formula assumes a flat, rectangular area with even depth. The result is an estimate that does not include extra material for compaction or waste.

What Your Gravel Calculator Result Means

Your result shows how much space the gravel will fill in cubic yards. Most suppliers sell gravel by the cubic yard or by the ton. One cubic yard of gravel typically weighs between 2,400 and 2,900 pounds depending on the type of stone. For most projects, adding 10 to 15 percent extra is recommended to account for compaction and uneven ground.

Consider ordering slightly more gravel than the calculated amount to ensure complete coverage and to account for settling over time.

Accuracy, Limitations & Common Mistakes of the Gravel Calculator

How Accurate Is the Gravel Calculator?

The calculator provides a close estimate for rectangular areas with even depth. It uses a standard geometric formula that is widely used in construction planning. However, actual gravel needs may vary based on the shape of your area, ground conditions, and how tightly the gravel is compacted. For precise estimates on large projects, consult with a landscaping professional or gravel supplier.

Limitations of the Gravel Calculator

This calculator assumes a rectangular shape and does not account for curved or irregular areas. It does not factor in gravel compaction, which can reduce volume by 10 to 20 percent. The calculator also does not adjust for slopes, holes, or uneven ground. For circular or L-shaped areas, break the space into smaller rectangles and calculate each separately.

Common Mistakes to Avoid

• Measuring depth in feet instead of inches can cause large errors. Always enter depth in inches as shown on the label.
• Forgetting to add extra for compaction and waste often leads to ordering too little gravel. Add 10 to 15 percent to your result.
• Confusing cubic yards with tons can cause ordering mistakes. Ask your supplier for the weight per cubic yard of your chosen gravel type.

Frequently Asked Questions

Who is this Gravel Calculator for?

This calculator is for homeowners, DIY enthusiasts, and contractors who need to estimate gravel for landscaping projects. It works well for planning paths, driveways, patios, and drainage projects. Anyone ordering bulk gravel for a rectangular area can use this tool.

How often should I use this calculator?

Use this calculator whenever you plan a new gravel project or need to reorder material. It is helpful during the planning phase to estimate costs and during the ordering phase to confirm quantities. You can also use it to compare different depth options for the same area.

Can I use this calculator for circular or irregular areas?

This calculator is designed for rectangular areas. For circular areas, you can estimate by using the diameter as both length and width, though this will slightly overestimate. For irregular shapes, divide the area into smaller rectangles, calculate each one separately, and add the results together.

Does this calculator account for gravel compaction?

The calculator provides the loose volume before compaction. Gravel typically compacts by 10 to 20 percent when packed down. For projects requiring a compacted base, consider ordering 15 percent more gravel than the calculated amount to achieve your desired finished depth.

Is the Gravel Calculator free to use?

Yes, this calculator is completely free to use. There is no sign-up required and it works on any device with a web browser.