What this estimate includes
This estimate shows gravel needed in cubic yards, cubic feet, and tons based on your area, depth, and selected gravel type.
Before you order
Compaction, uneven ground, moisture, and supplier density can change the final quantity. Use this as a planning estimate and confirm with your gravel supplier before ordering.
Need related estimates? Try the paver calculator or concrete slab calculator.
Frequently Asked Questions
How many tons of gravel are in a cubic yard?
It depends on the gravel type. Pea gravel and #57 crushed stone are about 1.4 tons per cubic yard. Road base is around 1.25 tons per yard. Dense-grade aggregate is closer to 1.5 tons per yard. Ask your supplier for the exact density of their material.
How deep should gravel be for a driveway?
A standard residential gravel driveway needs 4-6 inches of compacted base material (road base or dense-grade aggregate) plus a 2-3 inch top coat. Heavy vehicle traffic warrants the deeper end of that range.
What is the difference between pea gravel, crushed stone, and road base?
Pea gravel is smooth and rounded -- good for drainage and decorative use but not for driveways. Crushed stone (#57) is angular and interlocking -- the standard driveway top coat. Road base is a blend of crushed stone and fine particles that compacts firmly -- the best base layer for driveways and patios.
How much gravel do I need for a 10x20 driveway?
At 4 inches deep, a 10x20 driveway needs about 2.47 cubic yards or roughly 3.5 tons of crushed stone. Add 15% for compaction and order about 2.84 cubic yards or 4 tons. Use the calculator above for your exact dimensions.
Why does gravel density vary?
Gravel density depends on particle size, shape, and moisture content. Angular, tightly-packed crushed stone is denser than smooth, loosely-packed pea gravel. Wet gravel is heavier than dry. Always confirm density with your supplier before placing a large order.
How much does a cubic yard of gravel cover?
At 2 inches deep, 1 cubic yard covers about 162 sq ft. At 3 inches deep, about 108 sq ft. At 4 inches deep, about 81 sq ft. Use the calculator above for your exact dimensions and depth.
Do I need landscape fabric under gravel?
For decorative gravel in garden beds, landscape fabric helps suppress weeds. For driveways and hardscape base layers, skip the fabric -- it can interfere with compaction and drainage. For walkways, a weed barrier is optional but helps with long-term maintenance.