How Much Gravel for a 20x12 Driveway?
Short answer for a 20 ft long, 12 ft wide gravel driveway, 4 in deep: about 4.36 tons (tons (about 1.4 t/yd³, +5%)). Also: cubic yards to order (+5%): 3.11 yd³; cubic yards (exact): 2.96 yd³; cubic feet: 80.0 ft³.
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| Cubic yards to order (+5%) | 3.11 yd³ |
|---|---|
| Cubic yards (exact) | 2.96 yd³ |
| Cubic feet | 80.0 ft³ |
How this number is calculated
20 ft × 12 ft × 4 in ÷ 12 = 80.0 cubic feet = 2.96 cubic yards. Add 5% for settling and uneven ground: 3.11 cubic yards (about 4.36 tons).
Nearby sizes
| Size | Tons (about 1.4 t/yd³, +5%) |
|---|---|
| a 25 ft long, 10 ft wide gravel driveway, 4 in deep | 4.54 tons |
| a 20 ft long, 10 ft wide gravel driveway, 4 in deep | 3.63 tons |
| a 20 ft long, 14 ft wide gravel driveway, 4 in deep | 5.08 tons |
| a 20 ft long, 16 ft wide gravel driveway, 4 in deep | 5.81 tons |
Tips
- A 4–6 inch total depth works for light traffic; heavier loads need a deeper base.
- Order a little extra because the first layer compacts down.
- Driveways are usually built in layers: coarse base stone first, finer stone on top.
Frequently asked questions
How much gravel do I need for a 20 ft long, 12 ft wide gravel driveway, 4 in deep?
Short answer for a 20 ft long, 12 ft wide gravel driveway, 4 in deep: about 4.36 tons (tons (about 1.4 t/yd³, +5%)). Also: cubic yards to order (+5%): 3.11 yd³; cubic yards (exact): 2.96 yd³; cubic feet: 80.0 ft³.
How is the quantity for a 20 ft long, 12 ft wide gravel driveway, 4 in deep calculated?
20 ft × 12 ft × 4 in ÷ 12 = 80.0 cubic feet = 2.96 cubic yards. Add 5% for settling and uneven ground: 3.11 cubic yards (about 4.36 tons).
How much does gravel for a 20 ft long, 12 ft wide gravel driveway, 4 in deep cost?
Using rough planning prices (per ton, delivered), the material for a 20 ft long, 12 ft wide gravel driveway, 4 in deep comes to about $109 to $283. Prices vary by region and supplier, so get a local quote.