How Much Gravel Do You Need for a Driveway? A Central Valley Guide

The quick formula

Gravel is sold by the cubic yard and often priced by the ton, so the goal is to turn your driveway's size into cubic yards. Measure the length and width in feet, pick your depth in inches, and use this: length (ft) × width (ft) × depth (ft) ÷ 27 = cubic yards. To turn inches into feet, divide by 12, so 4 inches is 0.33 feet.

Here is a worked example. A driveway 40 feet long and 12 feet wide is 480 square feet. At 4 inches deep, that is 480 × 0.33 = about 158 cubic feet, or roughly 6 cubic yards. At about 1.35 tons per cubic yard, that is close to 8 tons of gravel. If the math is not your idea of a good time, tell us the length and width and we will size it for you.

Coverage at a glance

Because a cubic yard is 27 cubic feet, one yard of gravel spreads over a predictable area depending on depth:

To estimate weight, multiply your cubic yards by about 1.35 to get tons. Denser materials like base rock run a little heavier, which matters when a supplier prices by the ton.

A new driveway versus a refresh

The right depth depends on whether you are building or topping off. A fresh gravel driveway is built in layers: a compacted base of larger rock several inches deep, then a top layer of finer gravel, for a total structure that can run a foot or more where the ground is soft. Refreshing a driveway that already has a good base is simpler, usually 2 to 4 inches of new gravel to fill ruts and restore the surface. Telling us which one you are doing changes the amount a lot, so it is the first thing we ask.

What kind of gravel to use

For the base, a crushed rock such as Class II base rock locks together and compacts into a firm foundation. For the top, a crushed gravel gives grip and sheds water, while a rounded pea gravel looks nice but shifts more underfoot and under tires. Whatever the surface, the driveway needs a slight crown so water runs off instead of pooling and washing the gravel away. Superior Hauling can bring the right material for the job, or help you choose when you are not sure.

The part most gravel yards skip: spreading

Here is what most suppliers will not tell you. They drop a pile of gravel at the end of your driveway and drive off, and the real work, spreading and grading it, is left to you and a wheelbarrow. Superior Hauling does it differently. We deliver the material and spread it with the Bobcat on the same visit, grading it level and cutting the crown so it drains. Because we also handle Bobcat grading and dirt work, a rutted or sloped driveway can be reshaped before the fresh gravel goes down, all in one trip. That pairing of material delivery and spreading is the difference between a weekend of shoveling and a driveway that is done by the afternoon.

Getting it right the first time

Order too little and you are making a second trip; order too much and you are paying for gravel you store in a pile. The surest way to the right number is to have us measure and quote it. Pricing depends on the material, how much you need, the delivery distance, and whether we are spreading it, so we give you an honest, upfront number after we know the job rather than a guess over the phone. Call (559) 363-8702 or request a free quote.

Frequently asked questions