Gravel vs. Crushed Stone: Which Do You Need and How Much?

"Gravel" and "crushed stone" are often used interchangeably, but they're different materials with different properties. Choosing the wrong one can mean drainage problems, unstable surfaces, or wasted money. Here's how to pick the right material and calculate exactly how much you need.

Gravel vs. Crushed Stone: What's the Difference?

Gravel is naturally formed — weathered, rounded stones collected from riverbeds, beaches, or quarry pits. The rounded shape means pieces don't lock together tightly.
Crushed stone is mechanically broken from larger rocks. The angular, jagged edges interlock when compacted, creating a more stable surface.

When to Use Each Material

Choose Gravel When:

Drainage is the priority: Round shapes create larger gaps between stones, allowing water to flow through freely. Ideal for French drains, drainage beds, and garden borders.
Aesthetics matter: Pea gravel and river rock look more polished for landscaping, pathways, and decorative beds.
Playgrounds: Smooth, rounded edges are safer for children.
Aquariums and ponds: Smooth gravel won't tear liners.

Choose Crushed Stone When:

You need a stable base: Angular pieces lock together under compaction. Essential for driveways, road bases, and foundations.
Load-bearing is required: Patios, retaining walls, building foundations, and parking areas all need the stability of crushed stone.
Erosion control: Interlocking pieces resist shifting on slopes better than round gravel.
Under concrete/pavers: Crushed stone provides a stable sub-base that won't shift over time.

Common Sizes and Their Uses

#57 stone (3/4"): The workhorse — driveways, drainage, pipe bedding
#411 (blend of #4 and stone dust): Driveways and parking areas — packs down hard
Pea gravel (3/8"): Walkways, landscaping, around pavers
River rock (1–3"): Decorative borders, dry creek beds, erosion control
Crusher run (stone dust to 2"): Best driveway base — compacts to a near-solid surface

How Much Do You Need?

Use our Gravel Calculator to get the exact tonnage for your project. The basic formula:

Measure length × width × depth (in feet)
Convert to cubic yards (divide cubic feet by 27)
Multiply by the material's density (gravel ≈ 1.4 tons/cubic yard, crushed stone ≈ 1.5 tons/cubic yard)
Add 10% for waste and settling

For irregular areas, measure each section separately and add them together, or use our Square Footage Calculator to handle odd shapes.

Cost Comparison

Prices vary by region, but typical ranges (per ton, delivered):

Crushed stone: $25–$50/ton
Pea gravel: $30–$55/ton
River rock: $50–$160/ton (decorative grades cost more)
Crusher run: $20–$40/ton (best value for driveways)

Delivery fees typically run $50–$150 depending on distance. Ordering in bulk (10+ tons) usually gets better per-ton pricing.