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How Much River Rock for 50 Square Feet?

0.46cubic yards

at 3 inches deep — about 25 bags (0.5 cu ft each) or 0.63 tons

Depth	Cubic yards	Cubic feet	0.5 cu ft bags	Approx. tons
2 in	0.31 yd³	8.3 ft³	17	0.42
3 in (typical)	0.46 yd³	12.5 ft³	25	0.63
4 in	0.62 yd³	16.7 ft³	34	0.83

Use rock at least twice as deep as its largest stone size: 2 inches for small (¾–1 inch) rock, 3–4 inches for larger stones. Lay landscape fabric underneath to keep rock from sinking into soil.

The math: 50 sq ft × depth in feet ÷ 27 = cubic yards. One cubic yard of river rock covers 162 sq ft at 2" · 108 sq ft at 3" · 81 sq ft at 4".

River rock is sold by the ton as often as by the yard — the weight figures below are what the quarry will quote.

Different area?

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🧮Exact River Rock Calculator

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