Calculate cubic yards and tons of river rock or decorative landscape stone for garden borders, pathways, and dry creek beds.
🪨 River Rock Calculator
Cubic Yards
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Tons Needed
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0.5 cu ft Bags
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💡 Pro Tip
Large river rock (3–5 inch) is ideal for dry creek beds. Medium (1–2 inch) works well for paths and borders. Small (3/4 inch) is good for drainage and mulch replacement.
Frequently Asked Questions
Q: How much river rock do I need for 100 square feet?
At a 3-inch depth: 100 × 3/324 = 0.93 cubic yards = about 1.3 tons. At 4 inches: 1.23 cubic yards = 1.7 tons.
Q: Is river rock or pea gravel better for landscaping?
River rock is better for high-traffic areas and dry creek beds since the larger size stays in place. Pea gravel is better for playgrounds and decorative paths because it is gentler underfoot.

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