Road Base Calculator

Road base material — crushed gravel, limestone, recycled concrete, and similar aggregates — is ordered by weight or volume, and buying too little or too much can stall a project. Enter your area's length, width, and depth into the Road Base Calculator, then select your material type and adjust the compaction factor and waste & overrun percentages to get the volume needed in cubic yards. Secondary outputs include volume in cubic feet, total weight in tons, and an estimated material cost if you enter a cost per ton.

ft
ft
in

Typical depth is 3-6 inches for driveways

%

Extra material needed for compaction (typically 10-20%)

%

Extra material for waste and overrun (typically 5-15%)

Optional: Enter local material cost for cost estimation

Results

Volume Needed

--

Volume (Cubic Feet)

--

Weight

--

Estimated Cost

--

More Construction Tools

Frequently Asked Questions

What is road base material?

Road base is a compacted layer of aggregate materials like crushed stone, gravel, or recycled concrete that provides a stable foundation for driveways, roads, and parking areas. It distributes weight and prevents settling of the surface layer.

How much road base do I need for my driveway?

For most residential driveways, you'll need 3-6 inches of road base depth. Use our calculator by entering your driveway length and width in feet, plus the desired depth in inches to get the exact volume needed.

What depth should I use for road base?

Typical depths are 3-4 inches for light traffic driveways, 4-6 inches for heavier use areas, and 6+ inches for commercial applications. The depth depends on soil conditions and expected traffic load.

Should I add extra material for compaction and waste?

Yes, always add 10-20% extra for compaction and 5-15% for waste and overrun. Our calculator includes these factors to ensure you order enough material for your project.

Which road base material is best?

Crushed gravel and crushed stone are most common for their excellent compaction and drainage. Road base mix combines different sizes for optimal performance. Choose based on local availability, cost, and specific project requirements.

How do I calculate the cost of road base material?

Enter the cost per ton in our calculator to get an estimate. Prices typically range from $25-50 per ton depending on material type and location. Don't forget to factor in delivery costs.

Can I use recycled concrete for road base?

Yes, recycled concrete is an excellent eco-friendly road base option. It's typically less expensive than new materials and provides good compaction and drainage properties when properly crushed and graded.