How do I calculate how much gravel I need?

Multiply length by width to get square feet, multiply by depth in feet to get cubic feet, then divide by 27 for cubic yards. Add 5% to 15% waste for compaction and uneven ground.

How many tons are in a cubic yard of gravel?

Most gravel weighs about 1.25 to 1.55 tons per cubic yard. Pea gravel is usually lighter, while decomposed granite and dense crushed stone are heavier.

How deep should gravel be for a driveway?

A light-use gravel driveway often needs 4 inches of compacted gravel over a prepared base. Heavier vehicle areas may need deeper base layers and local contractor guidance.

Should I order gravel by the ton or cubic yard?

Bulk suppliers often sell gravel by the ton, while project planning is easier in cubic yards. Use both numbers so you can compare local supplier quotes.

How much extra gravel should I order?

Order about 10% extra for most projects. Increase the waste allowance for irregular shapes, soft subgrade, steep driveways, or hand-spread landscaping work.

Gravel driveway and project estimator

Free Gravel Calculator

A gravel calculator estimates how much gravel you need from project length, width, depth, material density, waste, and price. Use it to plan driveway gravel, paths, parking pads, and landscape beds before asking suppliers for a quote.

Project details

Length

Width

Gravel depth

MaterialWaste allowance

Price per ton

Truck capacity

tons

Bag size

cu ft

Driveways

Use 4 inches as a common top-layer planning depth, then confirm base depth and compaction with local conditions.

Parking pads

Measure the full vehicle footprint plus turning and door-clearance area, especially near fences or curb cuts.

Landscaping

Shallow paths and beds may use 2 inches, while drainage areas and high-traffic paths often need more.

Gravel calculator FAQ

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