How Much Gravel for a 400 Foot Driveway?
A 400-foot driveway at the common 12-foot width covers 4,800 square feet. Spread 4 inches deep, how much gravel for a 400 foot driveway comes to roughly 83.0 tons.
Volume and tonnage calculator →The math
- Area: 4,800.0 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 4,800.0 × 0.333 ÷ 27 = 59.26 yd³.
- Tons: × about 1.4 tons per yard = 83.0 tons.
The gravel calculator does this for any size.
Related: How Much Crushed Stone for a 400 Foot Driveway?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 2 in | 29.63 | 41.5 | 45.6 |
| 4 in | 59.26 | 83.0 | 91.3 |
| 6 in | 88.89 | 124.4 | 136.9 |
| 8 in | 118.52 | 165.9 | 182.5 |
Tons by driveway width
| Width | Tons at 4 in | Tons at 6 in |
|---|---|---|
| 10 ft | 69.1 | 103.7 |
| 12 ft | 83.0 | 124.4 |
| 14 ft | 96.8 | 145.2 |
| 16 ft | 110.6 | 165.9 |
Related: How Much #57 Stone for a 400 Foot Driveway?
How many loads
Plan for about 91.3 tons with waste. On a 15-ton truck that is about 7 trips; spreading while dumping (a tailgate spread) puts the stone close to where it belongs.
Layers for a lasting driveway
A new driveway usually starts with a larger base stone on compacted subgrade, then a top layer that packs. Topping up an existing drive takes much less, often 2 inches. Long drives benefit from a crown so water runs to the edges.
Ordering and delivery
If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. The scale ticket is the real weight; tons per yard here is a planning figure.
Questions people ask
How many tons of gravel for a 400 ft driveway?
About 83.0 tons at 12 ft wide and 4 inches deep.
How many truck loads for a 400 ft driveway?
About 7 loads of 15 tons, including some extra.
How many tons of gravel are in a cubic yard?
Roughly 1.4 tons for planning, but suppliers vary with stone size and moisture.
Should I put landscape fabric under the stone?
On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.
Related guides
- How to Build a Gravel Driveway That Lasts
- How Much Gravel for a 100 Foot Driveway? Tons by Depth
- A Passing Pullout on a Long Driveway
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Gravel for a 250 Foot Driveway?
- How Much Gravel for a 300 Foot Driveway?
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