Find out exactly how much crushed limestone your driveway or project needs — in tons, cubic yards, bags, and estimated cost. Covers #57, dense-grade, clean ¾″, and screenings.
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Depth:
2″ to top up, 4–6″ for a driveway base.
Sets the density used to convert volume → tons.
Recommended — crushed limestone settles ~20% when compacted.
Crushed limestone often runs ~$30–60 / ton delivered.
You will need
Estimated limestone cost:
Bags assume 0.5 cu ft each (≈50 lb bag). Tons are US (short) tons. Includes the 20% compaction allowance when ticked — always round up and confirm with your supplier.
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How much limestone gravel do I need?
Crushed limestone is sold by the ton or cubic yard. Work out the volume, then convert:
Cubic yards = length (ft) × width (ft) × depth (ft) ÷ 27. Multiply cubic yards by the density to get tons. Most crushed limestone weighs roughly 1.4 tons per cubic yard (about 2,700 lb).
As a rule of thumb, one ton of crushed limestone covers about 100 square feet at 2 inches deep, or roughly 65 sq ft at 3 inches.
How deep should limestone gravel be?
Use
Depth
Topping up an existing surface
2 inches
Path / walkway
2–3 inches
Driveway (over a base)
4 inches
New driveway / soft ground
6 inches+ (often in two layers)
Limestone densities used
Grade
Density (tons / cu yd)
Crushed limestone #57 (¾″)
1.40
Clean ¾″ limestone gravel
1.40
Dense-grade / crusher run (#411)
1.50
Limestone screenings / fines
1.50
Densities are typical averages; actual weight varies with moisture and quarry. Use them as a close estimate.
Limestone gravel FAQs
How much limestone gravel do I need for a driveway?
Multiply length × width × depth (all in feet) to get cubic feet, divide by 27 for cubic yards, then multiply by about 1.4 for tons. For example, a 40 × 10 ft driveway at 4 inches deep needs about 5.9 cubic yards, or roughly 8.3 tons of #57 limestone (with a 20% compaction allowance).
How many tons are in a cubic yard of crushed limestone?
About 1.4 US tons per cubic yard for #57 and clean ¾″ limestone. Dense-grade (crusher run) and screenings pack tighter at around 1.5 tons per cubic yard.
What is #57 limestone gravel?
#57 is a washed, angular crushed limestone roughly ¾ inch in size with the fines screened out. It drains well and is the most common grade for driveways, drainage, and as a base under pavers or concrete.
How much area does a ton of limestone cover?
About 100 square feet at 2 inches deep, or roughly 65 square feet at 3 inches. One cubic yard (≈1.4 tons) covers about 160 sq ft at 2 inches.
What is the difference between #57 and dense-grade limestone?
#57 is a clean, single-sized stone that drains freely and stays loose. Dense-grade (crusher run / #411) mixes stone with limestone fines so it compacts into a hard, locked surface — better as a base layer, while #57 is better for the drainage or top layer.