River Rock Calculator
River rock is a decorative, low-maintenance ground cover for beds, borders and dry creeks. Estimate the tons you need from your area and depth before ordering.
≈ 8.3 wheelbarrow loads
Result
0.93yd³
1.29tons
Estimates are based on typical material density. Actual weight varies with moisture and grain size.
Order your material
Based on your calculation, here is how much to order of each product.
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How to measure for River Rock
- Measure the length and width of the area in feet. For circular areas, measure the diameter instead.
- Choose the depth of your layer in inches. Decorative layers and walkways usually need 2-3 inches, driveways 4-6 inches.
- Enter the dimensions in the calculator above to get the volume in cubic yards and the weight of River Rock in tons.
- Add about 10% for compaction and settling, and round up to the nearest whole ton when ordering.
Material density & coverage reference
| Material | Density (loose) | Tons per cubic yard | Coverage per ton |
|---|---|---|---|
| Gravel | 100 lb/ft³ | 1.35 | ~80 sq ft at 3 in deep |
| Sand | 100 lb/ft³ | 1.35 | ~80 sq ft at 3 in deep |
| Crushed Stone | 100 lb/ft³ | 1.35 | ~80 sq ft at 3 in deep |
| Limestone | 98 lb/ft³ | 1.32 | ~82 sq ft at 3 in deep |
| Topsoil | 78 lb/ft³ | 1.05 | ~103 sq ft at 3 in deep |
| Mulch | 30 lb/ft³ | 0.4 | ~267 sq ft at 3 in deep |
| River Rock | 103 lb/ft³ | 1.39 | ~78 sq ft at 3 in deep |
Values are typical estimates for loose, dry material. Actual density varies by source, moisture and grain size.