New driveway or a top-up? Get tonnage per layer and in total, then order driveway gravel delivered.
A single-car driveway, 12 by 50 feet, takes 5.2 tons of gravel for every 2 inches of depth. A quick top-up is one number. A new driveway from bare soil is a different number entirely. This calculator handles both.
A gravel driveway built right is layers, not a pile: about 4 inches of compacted base stone, then a 2–3 inch top course that locks under traffic and sheds water. Resurfacing an existing drive only needs the top course. Pick the preset that matches your project and the depth is set for you.
The formula, with a worked example
per layer: cubic yards = (L ft × W ft × layer depth in ÷ 12) ÷ 27
tons = cubic yards × 1.36
A new 12 × 50 ft driveway: 4″ of road base (11.1 tons) plus a 3″ top of 3/4″ driveway gravel (7.8 tons), so about 18.9 tons across two materials. A 2-inch top-up on the same driveway is 5.2 tons.
How much does a ton of driveway gravel cover?
Driveway gravel at 1.36 tons per cubic yard (about 2,720 lb):
| Depth | 1 cubic yard covers | 1 ton covers |
|---|
| 2 inches | 162 sq ft | 116 sq ft |
| 3 inches | 108 sq ft | 77 sq ft |
| 4 inches | 81 sq ft | 58 sq ft |
| 6 inches | 54 sq ft | 39 sq ft |
How much does driveway gravel weigh?
About 2,720 pounds per cubic yard, or 1.36 tons. One ton covers roughly 119 square feet at 2 inches, 79 at 3. So each 2-inch layer on a 600 sq ft driveway is about 5 tons.
Gravel driveway FAQs
How many tons of gravel do I need for my driveway?
A 12 × 50 ft single-car driveway needs about 5.2 tons per 2 inches of depth. A 2–3 inch top-up runs 6–9 tons. A full new build at 6–8 inches total runs 18–25 tons across base and top layers. Enter your dimensions above for the exact number.
How deep should the gravel be on a driveway?
A finished gravel driveway should total 6–8 inches: about 4 inches of compacted base stone plus a 2–3 inch top course. If a firm base is already down, keep the top course at 2–3 inches.
What is the best gravel for a driveway?
A 3/4-inch angular crushed gravel is the classic top layer. It locks under traffic and sheds water. Put it over a road-base or large-stone foundation, never straight on soil. Our driveway gravel range covers the size options.
How often should I add gravel to a driveway?
Plan on 1–2 inches every 2–4 years, sooner on slopes and busy drives. Raking regularly and filling low spots early stretches the interval.
Can I put gravel over an existing dirt driveway?
Over compacted roadbed, yes: add a 4-inch course and compact it. Over soft soil or grass, no. Strip it first and lay fabric plus base, or the new stone disappears into the mud the first wet month.
