Free Tool
Gravel driveway calculator
Enter your driveway's length, width, and the depth of rock you want. Get the cubic yards and approximate tons of rock right away — no contact info needed.
Gravel driveway calculator
Enter your driveway's length, width, and the depth of rock you want. The answer shows right away — no name, phone, or email needed.
Enter your driveway size above to see the cubic yards and tons of rock you'll need.
Base rock vs. surface rock
Base rock is larger crushed limestone that locks together and carries the load. Surface rock is smaller and packs into a smooth top you drive on. A new driveway needs both — the calculator gives the total volume for a full-depth fill.
Why a driveway needs a crown
A crown is a slight rise down the center so water runs off both sides into the ditches. Without it, water runs down the middle and cuts ruts. The crown is built into the shape when the drive is graded — the rock volume stays the same.
Why it's an estimate
The real tonnage changes with how compacted the base is, how much the rock settles, the exact width on the ground, and whether the drive is built up or cut in. Use this to get a rough idea — then call us for a real number.
Common driveway sizes and tonnage
A quick reference for typical gravel driveway sizes in Northeast Kansas and the approximate tons of rock each takes.
| Length (ft) | Width (ft) | Depth (in) | Type | Approx. tons |
|---|---|---|---|---|
| 100 | 10 | 6 | New driveway | ≈ 23 tons |
| 200 | 10 | 6 | New driveway | ≈ 46 tons |
| 300 | 12 | 6 | New driveway | ≈ 83 tons |
| 500 | 12 | 8 | New long lane | ≈ 184 tons |
| 100 | 10 | 3 | Resurface (2–3 in) | ≈ 12 tons |
| 200 | 10 | 3 | Resurface (2–3 in) | ≈ 23 tons |
| 300 | 12 | 3 | Resurface (2–3 in) | ≈ 41 tons |
Gravel driveway calculator questions
How is the tonnage calculated?
We convert your driveway's length, width, and depth into cubic yards, then multiply by a standard weight of about 1.4 tons per cubic yard for compacted limestone. The result is an estimate — the real number changes with how compacted the base is and how the rock settles.
What's the difference between base rock and surface rock?
Base rock is larger crushed limestone that locks together and sits under the surface — it carries the load. Surface rock is smaller and packs into a smooth top you drive on. A new driveway needs both, so the calculator assumes a full-depth fill. A resurface only adds surface rock on top of an existing base.
Why does my driveway need a crown?
A crown is a slight rise down the center of the drive so water runs off both sides into the ditches. Without it, water runs down the middle and cuts ruts. The calculator gives you the rock volume; the crown is built into the shape when the drive is graded.
Is the calculator's number exact?
No — it's an estimate. The real tonnage changes with how compacted the base is, how much the rock settles, the exact width on the ground, and whether the drive is built up or cut in. Use it to get a rough idea, then call us for a real number based on your actual drive.
Should I order extra rock?
Most driveways benefit from a little extra — rock compacts and settles, and you'll want material to bring the crown back over time. Ordering a bit over the estimate is normal. We'll tell you the right amount when we look at the drive.
Want a real number for your drive?
The calculator gives you a rough idea. We come look at the drive, the base, and the ground and give you a real quote.
Call (785) 383-9751