Charts
Gravel Coverage Chart
Quick Answer
For 100 square feet, gravel needs about 0.62 cubic yards at 2 inches, 0.93 cubic yards at 3 inches, or 1.23 cubic yards at 4 inches.
Practical Guide
Gravel coverage uses the same volume math as mulch, but bulk gravel is often sold by ton. To estimate tons, multiply cubic yards by the gravel density.
Pea gravel is often estimated around 1.4 tons per cubic yard, crushed stone around 1.5, river rock around 1.35, and decomposed granite around 1.45.
How to Use the Chart
Choose the project area and depth, then read the cubic yards. For tons, multiply by the density from your supplier.
Formula
Area square feet x depth feet = cubic feet. Cubic feet / 27 = cubic yards. Cubic yards x density = tons.
| Area | 2 inches | 3 inches | 4 inches |
|---|---|---|---|
| 100 sq ft | 0.62 cu yd | 0.93 cu yd | 1.23 cu yd |
| 250 sq ft | 1.54 cu yd | 2.31 cu yd | 3.09 cu yd |
| 500 sq ft | 3.09 cu yd | 4.63 cu yd | 6.17 cu yd |
| 1,000 sq ft | 6.17 cu yd | 9.26 cu yd | 12.35 cu yd |
FAQ
How do I convert gravel cubic yards to tons?+
Multiply cubic yards by the material density in tons per cubic yard. Confirm the density with your supplier.
How deep should decorative gravel be?+
A 2-inch layer is common for decorative cover, while paths often use about 3 inches.
Does gravel weight vary?+
Yes. Stone type, size, moisture, and compaction all affect weight.
Should I use fabric under gravel?+
Fabric can help separate decorative gravel from soil, but it is not right for every planting or structural base situation.