River rock calculator
Measure your project. Make a clearer plan.
Estimate decorative river rock for a bed or border using its actual supplier density.
Clear math. Better decisions.
A worked example
At 200 sq ft, 3 inches deep, and 10% extra: 2.04 cu yd. At an entered 100 lb/cu ft: 2.75 US short tons, or 110 × 50 lb bags.
Before you order
- Estimate decorative river rock for a bed or border using its actual supplier density.
- The common starting density is only an arithmetic illustration; rock types can differ substantially.
- These tools share a volume formula. Compaction, slope, drainage performance, and minimum delivery increments need supplier confirmation.
Good questions.
Where do the prices come from?
You enter actual supplier prices. A blank price is unknown; enter zero only when that item is free or deliberately excluded. Taxes and installation are excluded unless a field explicitly includes them.
Can I use metric measurements?
Yes. The unit selector converts dimensions and unit prices. Results use whole packages where applicable. Starting dimensions are examples; confirm product specifications before ordering.
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