Crushed Stone vs Fill Dirt: Size, Cost, and Which to Use

Crushed Stone

Crushed stone is rock that a quarry blasted, crushed, and screened into a set size range. It costs $20 to $40 per ton in 2026, weighs 1.35 to 1.55 tons per cubic yard, and is the base under nearly every road, driveway, slab, and patio in the country. The important difference from "gravel" in the natural sense is shape: crushed stone is angular, so the pieces lock together, while natural river gravel is rounded and rolls. Almost everything sold as gravel at a quarry is crushed stone.

Fill Dirt

Subsoil material free of organic matter, used for grading, filling, and raising elevation. Fill dirt is a lower-grade soil that lacks the nutrients of topsoil, making it ideal for structural and non-growing applications where settling must be minimized.

Crushed Stone

• ✓ Driveways
• ✓ Road base
• ✓ Concrete mix
• ✓ Drainage
• ✓ Paver base
• ✓ Backfill

Fill Dirt

• ✓ Grading
• ✓ Filling depressions
• ✓ Raising elevation
• ✓ Backfill
• ✓ Construction site prep
• ✓ Under slabs

Crushed Stone

• + Angular pieces interlock and carry weight
• + Cheapest bulk material at $20 to $40 per ton
• + A size for every job, from dust to 4-inch rock
• + Stocked at every quarry
• + Drains (clean) or packs (minus), your choice

• − Sharp edges, hard on bare feet and tires in big sizes
• − Plain gray look
• − Easy to order the wrong size
• − Larger sizes are hard to spread by hand

Fill Dirt

• + Very affordable — often cheapest material available
• + Compacts firmly for structural support
• + Does not decompose or settle like organic soil
• + Widely available from construction sites
• + Ideal base under gravel or concrete

• − Not suitable for growing plants
• − Must be free of debris and contaminants
• − May contain clay that drains poorly
• − Needs compaction in layers for stability
• − Quality varies widely between sources

Crushed Stone

Crushed stone is sold by sieve size, from stone dust and #10 screenings (under 1/4 inch) through #8 (3/8 to 1/2 inch), #57 (3/4 to 1 inch), #4 (1 to 1.5 inches), #3 (1.5 to 2.5 inches), and #1 or #2 (2.5 to 4 inches). Every size is angular with fractured faces. Color follows the quarry: gray or blue-gray limestone, gray to pink granite, dark basalt, or tan sandstone and limestone in the South.

Fill Dirt

Fine to coarse soil particles, free of organic matter like roots, grass, or leaves. Color ranges from tan to reddish-brown depending on local geology. "Clean fill" means free of debris, rocks larger than 3", and contaminants.