Crushed Gravel Calculator (3/4", 20mm & Clear Stone)
Estimate crushed gravel and crushed stone for bases, driveways and drainage — including common Canadian sizes like 3/4" (20 mm) crush, crusher run and 0–3/4" clear stone. Get tonnes and cubic yards instantly.
Crushed Gravel Calculator (3/4", 20mm & Clear Stone) Tool
Crushed gravel sizes in Canada
Crushed gravel is mechanically crushed stone with angular edges that compact into a firm surface. Common Canadian products:
| Product | Size | Typical use |
|---|---|---|
| 3/4" (20 mm) crush / crusher run | 20 mm minus + fines | Driveways, compacted base — packs hard |
| 0–3/4" clear / clear stone | 20 mm, washed, no fines | Drainage, French drains, under slabs |
| 5/8" (16 mm) minus | 16 mm + fines | Pathways, fine grading layer |
| 2" (50 mm) crush | 50 mm minus | Heavy base / sub-base |
Crush vs. clear stone
Crush (crusher run) contains stone dust/fines, so it compacts into a solid surface — best for driveways and bases. Clear stone is washed with no fines, so it drains freely — best for French drains and under-slab applications.
Density used
Crushed stone / crusher run is calculated at about 1.60 t/m³ (≈2,700 lb/yd³). Clear stone is slightly lighter once washed.
Frequently asked questions
How much 3/4 crushed gravel do I need?
Multiply area × depth for the volume, then multiply by ~1.6 t/m³ for tonnes. For a 50 m² area at 10 cm deep that is 5 m³ ≈ 8 tonnes of 3/4 inch crush. The calculator gives exact figures.
What is the difference between crush and clear stone?
Crush (crusher run) includes stone dust and compacts into a hard surface, ideal for driveways and bases. Clear stone is washed with no fines and drains freely, ideal for French drains and under slabs.
How much does 3/4 crushed gravel weigh?
About 1.6 tonnes per cubic metre, or roughly 1.3 tonnes (1.4 US tons) per cubic yard.
What depth of crushed gravel for a base?
Typically 10 cm (4 in) for a patio or path base and 10–15 cm (4–6 in) for a driveway, compacted in layers.
More gravel calculators
Disclaimer: Results are estimates based on the values you enter and typical material densities. Actual quantities vary with gravel type, particle size, moisture and compaction. Cost estimates cover material only and exclude labour, delivery and taxes. Confirm quantities with your supplier.