1-3 River Rock Calculator

Instantly calculate how many cubic yards, tons, and cubic feet of 1‑3 river rock you need for any project – free and no sign‑up.

  • Free
  • No sign-up
  • Instant results

Loading calculator…

How to use it

  1. Enter the length in feet.
  2. Enter the width in feet.
  3. Enter the depth in inches.
  4. Click Calculate to see cubic feet, cubic yards, and tons.

What it does – The 1‑3 River Rock Calculator converts the length, width, and depth you enter into three useful measures: cubic feet, cubic yards, and estimated tons (using 1.4 US tons per cubic yard).
Why it matters – Knowing cubic yards helps you order the right amount from suppliers, while tons give you a realistic weight for delivery fees and equipment limits.
How to read the results – Cubic feet is the raw volume, cubic yards is the industry standard for bulk material orders (1 yd³ = 27 ft³), and tons is the weight estimate you’ll use for budgeting.
Enter your dimensions, hit Calculate, and you’ll see the numbers instantly.
Using the calculator before you call a supplier prevents over‑ordering, which can save both material costs and hauling fees. It also lets you compare quotes based on weight, ensuring you get the best price per ton.

Pro tips

  • Add 5‑10% extra for compaction and spillage.
  • Round up to the nearest whole ton when ordering to avoid short shipments.
  • Check supplier minimum order sizes; the calculator shows exact amounts.
  • Double‑check depth units; a common mistake is entering depth in feet instead of inches.

Real-life examples

  • A homeowner planning a new garden path wants to know how much river rock to order.
  • A landscape contractor needs weight estimates for delivery truck load limits.
  • A DIYer replacing a driveway base wants to compare material costs per ton.

Case study

Jane, a homeowner in Texas, entered a 12 ft × 10 ft patio with 3 in depth. The calculator showed 1.33 yd³ (≈1.86 tons). She ordered 2 tons, avoiding a costly extra trip and stayed within budget.

Frequently asked questions

How do I convert the calculator results to gallons?
River rock is sold by volume (cubic yards) or weight (tons); gallons are not a standard measure for this material.
Why does the calculator use 1.4 tons per cubic yard?
1.4 US tons per cubic yard is the industry‑accepted average weight for 1‑3 inch river rock.
Can I use the calculator for other rock sizes?
The weight factor changes with size; this tool is calibrated specifically for 1‑3 inch rock.
What if my depth is in centimeters?
Convert centimeters to inches (1 cm ≈ 0.39 in) before entering the depth.
Do I need to account for slope in the calculation?
Enter the average depth; the calculator assumes a uniform depth across the area.