How Much Road Base for a 100 Foot Driveway?
How much road base for a 100 foot driveway: about 22.2 tons for a 12-foot-wide lane at 4 inches deep. That is 1,200 square feet and 14.81 cubic yards.
Volume and tonnage calculator →The math
- Area: 1,200.0 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 1,200.0 × 0.333 ÷ 27 = 14.81 yd³.
- Tons: × about 1.5 tons per yard = 22.2 tons.
The crushed stone calculator does this for any size.
Related: How Much Road Base for 100 Square Feet?
Road base needed by depth
| Depth | Cubic yards | Tons of road base | Tons +10% |
|---|---|---|---|
| 2 in | 7.41 | 11.1 | 12.2 |
| 4 in | 14.81 | 22.2 | 24.4 |
| 6 in | 22.22 | 33.3 | 36.7 |
| 8 in | 29.63 | 44.4 | 48.9 |
Tons by driveway width
| Width | Tons at 4 in | Tons at 6 in |
|---|---|---|
| 10 ft | 18.5 | 27.8 |
| 12 ft | 22.2 | 33.3 |
| 14 ft | 25.9 | 38.9 |
| 16 ft | 29.6 | 44.4 |
Related: Tons of Road Base per 100 Feet of 12 ft Road
How many loads
Plan for about 24.4 tons with waste. On a 15-ton truck that is about 2 trips; spreading while dumping (a tailgate spread) puts the stone close to where it belongs.
Layers for a lasting driveway
If this is a new driveway on soil, build a base of 4 to 6 inches of coarse stone first and finish with a packable surface stone. For a refresh, 2 inches over the old surface is common. Add culverts or ditches where water crosses the drive.
Getting it delivered
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. Road base is a graded stone-and-fines mix built to compact into a load-bearing layer. The scale ticket is the real weight; tons per yard here is a planning figure.
Questions people ask
How many tons of road base for a 100 ft driveway?
About 22.2 tons at 12 ft wide and 4 inches deep.
How many truck loads for a 100 ft driveway?
About 2 loads of 15 tons, including some extra.
How many tons of road base are in a cubic yard?
Roughly 1.5 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 Road Base for a 50 Foot Driveway?
- How Much Road Base for a 75 Foot Driveway?
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