How to use it
- Measure your project area's length and width in feet.
- Enter your target rock depth in inches.
- Read your required volume in cubic feet, cubic yards, and estimated tons.
Bulk landscape rock is sold by two measurements: volume (cubic yards) and weight (tons). Guessing either number leads to two expensive mistakes: paying for extra material you cannot return or ordering multiple delivery trips because you ran short.
This estimator converts your coverage area and desired depth directly into cubic feet, cubic yards, and total weight in US tons. We estimate rock weight at 1.4 US tons per cubic yard, which matches standard crushed rock and gravel densities.
When reading your results, use cubic yards if you are ordering from retail soil yards or loading a standard pickup bed. Use the tons figure when buying from commercial rock quarries that weigh delivery trucks on certified scales. Having both numbers ready ensures you get accurate supplier quotes, eliminate surprise delivery surcharges, and order the exact amount needed for a uniform, weed-suppressing rock bed.
Pro tips
- Add 10% extra to your final yardage to account for irregular ground contours, settling, and compaction.
- Round up to the nearest half-ton when ordering from quarries, as commercial loaders cannot meter down to exact pounds.
- Lay commercial-grade woven landscape fabric before installing rock to prevent heavy stones from sinking into subsoil over time.
- Measure depth in inches accurately; laying rock too thin exposes bare fabric, while laying it too thick wastes money and suffocates plant roots.
Real-life examples
- Replacing a water-thirsty front lawn with decorative river rock and drought-tolerant landscaping.
- Building a stable crushed granite pathway or driveway that drains clean in heavy rain.
- Installing a 3-inch stone bed around foundation perimeters for clean drainage and pest barriers.
Case study
Marcus planned a 540-square-foot rock garden at a 3-inch depth. Instead of eyeballing truckloads, he ran the numbers: exactly 5 cubic yards and 7.0 tons of rock (at 1.4 tons per cubic yard). He ordered 7.7 tons to cover settling. The quarry delivered one single dump truck, hitting his target grade with zero material wasted and zero secondary delivery fees.