Gravel Driveway Calculator
Calculate driveway gravel by dimensions or known area. Plan a surface top-up or a new driveway with a compacted base, then compare exact cubic yards and tons with a practical supplier order target.
Gravel Driveway Calculator
Gravel driveway calculator results
Enter driveway dimensions, a finished gravel depth, and a gravel type to see your yardage and tons.
How the gravel driveway calculator works
Use the finished compacted depth and the bulk density from your project or supplier whenever available. Reference profiles are editable planning assumptions, not universal driveway design recommendations.
Calculate driveway gravel by dimensions or known area. Plan a surface top-up or a new driveway with a compacted base, then compare exact cubic yards and tons with a practical supplier order target.
How to calculate gravel for a driveway
Multiply the driveway area by the finished layer depth to get compacted volume. Convert cubic feet to cubic yards by dividing by 27, then multiply volume by the material’s bulk density to estimate tons.
The calculator keeps exact quantity visible before applying an allowance. That makes it easier to compare a volume-based quote with a weight-based quote and avoid adding the same waste factor twice.
Plan surface gravel, base and subbase separately
Surface gravel is the visible wearing layer. A dense-graded aggregate such as crusher run may be used for a compactable base. Keeping each layer separate helps you check different materials, densities, depths and delivery loads against a quote.
The calculator does not choose a universal base depth. Soil strength, drainage, frost, traffic and local specifications determine the driveway structure; use the compacted depths in your project plan.
Exact quantity versus supplier order target
Exact quantity is the mathematical result for the entered area, depth and density. The order target adds only the allowance you enter, then can round each layer to a supplier increment when that information is known.
Add truck capacity to estimate loads and enter a local price to estimate material-only cost. Delivery, excavation, drainage, labor and access are not included unless a supplier quote is represented by your inputs.
Before ordering driveway gravel
Confirm whether the quote uses loose cubic yards, US tons, metric tonnes, bags or a fixed truck payload. Ask whether the density is loose bulk density, delivered density or a tested project value.
Keep surface, base and subbase quantities separate when the materials or deliveries differ. A final structural decision should come from the site and project specification, not a generic online depth recommendation.
FAQ
How much gravel do I need for a driveway?
Enter the driveway area, compacted depth and material profile. The calculator shows exact volume and weight first, then applies any allowance you enter to create an order target. Supplier density and specified compacted depth are more reliable than a generic default.
How do I calculate gravel yardage for a driveway?
Multiply area by finished depth, convert cubic feet to cubic yards by dividing by 27, and use the supplier’s bulk density to estimate tons. Add an allowance only after the exact quantity is visible.
Should I choose surface top-up or new driveway build?
Choose Surface top-up when the existing driveway already provides the base. Choose New driveway build when you need a surface layer and compacted base. Add a subbase only when the project specification or site conditions call for it.
What is the difference between exact quantity and order target?
Exact quantity is the mathematical amount for the entered area and compacted depths. Order target applies the entered allowance and optional supplier rounding, so it is closer to a purchasing target but still needs supplier confirmation.
What density should I use for driveway gravel?
Use the bulk density from the quarry, supplier, test report or quote when available. Rock type, gradation, moisture and handling can change the weight for the same volume.
Does this calculator choose the correct driveway base depth?
No. It calculates quantities from the depth you provide. Soil, drainage, frost, climate, traffic, geotextile requirements and local specifications determine the appropriate structure.