Gravel Driveway Calculator: Tons, Yards & Cost for Every Driveway Size
This driveway gravel calculator handles the base layer and the surface layer separately, then adds them together. Enter your dimensions once and get cubic yards, tons and cost for each layer and for the whole job.
Enter your driveway dimensions and depths
Layer 1: Base
Material
Class 5 / Base Rock (locked)
Layer 2: Surface
Your results
Total gravel needed
11.11 cubic yards
16.00 tons combined
Area
600 sq ft
Estimated cost
-
Add a price to see cost
Layer 1: Base rock
7.41 cu yd
11.00 tons
Layer 2: #57 Stone
3.70 cu yd
5.00 tons
A 50 ft by 12 ft driveway needs 7.41 cubic yards of Class 5 base rock at 4" and 3.70 cubic yards of #57 Stone at 2". That is 11.11 cubic yards total, about 16.00 tons.
The two-layer system
Why a Driveway Needs Two Gravel Layers
A gravel driveway is a sandwich, not a single pour. The bottom layer is the base, usually Class 5 or crusher run, a mix of crushed rock and fine particles that compacts into a dense, load-bearing shelf once it's rolled and watered. The top layer is the surface, a clean, angular stone like #57 or #411, that gives you a comfortable, rakeable finish without holding the fines that make a driveway muddy.
These two jobs need different materials because they need different properties. A base layer has to lock together permanently, so it needs the fine particles that #57 and #411 were deliberately washed free of. A surface layer has to stay loose enough to top up and re-rake for years, so it can't afford the fines that make Class 5 pack so hard. Using one material for both layers means picking a compromise instead of the right tool for each job. This calculator keeps the two separate so you get an accurate order for both.
Depth guide
Recommended Depths by Driveway Type
A standard residential driveway takes 6 to 9 inches of gravel in total. Heavier use, such as a shared driveway, a driveway that sees delivery trucks, or one built on soft or clay-heavy soil, needs the upper end of every range below.
| Driveway type | Base depth | Surface depth | Total depth |
|---|---|---|---|
| Standard residential | 4 in | 2 in | 6 in |
| Heavier vehicles / shared use | 5 in | 2.5 in | 7.5 in |
| Soft or clay-heavy subgrade | 6 in | 3 in | 9 in |
The base layer is where depth matters most for durability. Skimping there is the single biggest cause of a driveway that ruts and potholes within a year or two. If you're unsure which row applies, measuring how much your soil deforms under a heavy vehicle today is a better guide than guessing; soft ground earns the deeper end of every range.
Compaction
Compaction and Ordering Extra
Loose gravel arrives full of air pockets, and compacting it, with a plate compactor or simply vehicle traffic over time, drives those pockets out and settles the layer below the depth you originally spread. Order about 10 percent extra for the base layer, since it contains the fine particles that settle the most, and about 5 percent extra for the surface layer, which is cleaner stone that barely compresses.
The totals this calculator shows are the loose volume for the depths you entered. Add the compaction buffer on top when you place your order, not instead of a deeper base to begin with. A base that's too thin will still rut even with extra material, because the problem is depth, not volume.
Budgeting
Estimating Driveway Gravel Cost
Gravel for a driveway typically runs $15 to $50 per ton delivered, with crusher run and Class 5 base rock at the low end of that range and decorative surface stone toward the top. A 50 ft by 12 ft driveway at standard depths needs roughly 17 tons combined, so expect a total in the range of $250 to $850 for material alone, before delivery.
Delivery is usually billed separately, often $50 to $150 per load depending on distance, and many yards fold that fee into the per-ton price for larger orders. Since a full driveway order typically clears most suppliers' delivery minimums in a single trip, get quotes for the combined base-plus-surface tonnage rather than ordering each layer separately. You'll usually pay one delivery fee instead of two. For a closer look at how bulk pricing scales with quantity, the cubic yards to tons converter breaks down the weight-to-volume math suppliers use to quote a load.
Related tools
Related Driveway & Stone Calculators
If your surface layer uses a graded stone rather than pea gravel, the crushed stone calculator covers all six common grades, including #57 and #411, with the same per-grade density figures used here. If the driveway also needs a drain along one edge to keep water from pooling, size the stone for that separately with the French drain gravel calculator, which deducts the pipe's own volume from the trench.
For the full picture of every material this site covers, densities, coverage tables and cost ranges for all ten aggregate types, start from the gravel coverage calculator homepage.
Answers
Frequently Asked Questions
How much gravel do I need for a driveway?
Most driveways need 6 to 9 inches of gravel in total, split into a 4 to 6 inch compacted base of Class 5 or crusher run and a 2 to 3 inch surface layer of #57 or #411 stone. A 50 ft by 12 ft driveway at those depths needs roughly 9.3 cubic yards of base rock and 3.7 cubic yards of surface stone, about 13 cubic yards combined, or around 17 tons.
Why does a driveway need two layers instead of one?
The base layer and the surface layer do different jobs. The base, usually Class 5 or crusher run, contains fine particles that lock together under a roller and spread vehicle weight across the subgrade, so it needs to compact hard. The surface layer sits on top and needs to stay loose enough to rake smooth and top up over time, which is why a clean, angular stone like #57 or #411 works better there than a fines-heavy base material.
What is the best gravel for a driveway base layer?
Class 5 gravel (also sold as base rock or road base) is the standard choice, because its mix of crushed rock and fine particles compacts into a dense, load-bearing layer. Crusher run is a close second and often cheaper. Avoid pea gravel or river rock for a base layer. Their rounded shape never locks together, so the base stays soft under vehicle weight no matter how much you compact it.
How thick should the base layer be versus the surface layer?
A 4 to 6 inch base layer is standard for a residential driveway; go to the top of that range on soft or clay-heavy soil. The surface layer needs only 2 to 3 inches. Anything deeper just adds cost without adding stability, since the surface layer's job is a comfortable driving finish, not structural support.
Should I add a compaction buffer to a driveway gravel order?
Yes. Add 10 percent to the base layer, since base materials with fine particles settle the most as they compact. The surface layer needs less, around 5 percent, because clean single-sized stone barely compresses. This calculator's totals are already the loose volume you need to order; the buffer is what covers you if the delivered load runs a little short after compaction.
Can I use the same gravel for both layers of a driveway?
You can, but you'll get a worse result. Using #57 or #411 for the base means you're relying on angular stone with no fines to compact into a firm structural layer, which it will only partially do, so the driveway stays softer under vehicle weight than a proper two-layer build. Using Class 5 as the surface layer works better structurally but tends to hold more dust and mud than a clean surface stone.