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How Much River Rock for 300 Square Feet?

2.78cubic yards

at 3 inches deep — about 150 bags (0.5 cu ft each) or 3.75 tons

Depth	Cubic yards	Cubic feet	0.5 cu ft bags	Approx. tons
2 in	1.85 yd³	50 ft³	100	2.5
3 in (typical)	2.78 yd³	75 ft³	150	3.75
4 in	3.7 yd³	100 ft³	200	5

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: 300 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

Same area, other materials

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