Road Base Calculator
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ft
in
Road base (also called crusher run or road aggregate) is compacted gravel used as the foundation for driveways, roads, and paths. A road base calculator determines how many tons of material are needed based on area and depth.
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Tip: Order road base in tons, not cubic yards — weight is how it's sold and priced. One truck load is typically 20–25 tons. Add 10–15% extra for compaction (road base compacts about 15%).
- 1Volume = Length (ft) × Width (ft) × Depth (ft)
- 2Convert to cubic yards: Volume / 27
- 3Weight: road base weighs ~1.5–2.0 tons per cubic yard (depending on material)
- 4Typical depth: 4–6 inches for residential driveways; 6–12 for heavy use
| Material | Weight/yd³ | Best use |
|---|---|---|
| Crushed limestone | 1.5–1.7 tons | Driveways, paths |
| Crusher run (0-3/4") | 1.6–1.8 tons | Best compaction for base layer |
| Gravel (#57) | 1.4–1.5 tons | Drainage, top layer |
| Dense grade aggregate | 1.8–2.0 tons | Heavy-duty roads |
| Recycled concrete | 1.4–1.5 tons | Budget option, good drainage |
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Fun Fact
A well-built gravel driveway can last 100+ years with periodic top-dressing. The key is a proper sub-base (6+ inches of compacted road base) with a French drain crown profile so water drains to the sides rather than pooling.
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