How to use it
- Enter length in feet.
- Enter width in feet.
- Enter depth in inches.
- Read cubic yards, tons, and cubic feet results.
The Landscape Rock Calculator turns your project dimensions into three practical measures: cubic feet, cubic yards, and estimated tons. You input length and width in feet and depth in inches; the tool converts depth to feet, multiplies the three values to get volume in cubic feet, then divides by 27 to show cubic yards. Multiplying cubic yards by 1.4 gives a quick ton estimate, which helps you order the right amount without costly over‑or under‑ordering. For example, a 10 ft × 8 ft area at 4 in depth yields 26.7 ft³, 0.99 yd³, and about 1.4 tons. Read each line to see the raw volume, the yardage you’ll buy, and the weight you’ll need for transport and budgeting. You can also round up to the nearest whole yard to simplify delivery calculations.
Pro tips
- Add 5‑10% waste to cover breakage and spillage
- Round up to the next whole cubic yard for easier ordering
- Check supplier’s ton‑per‑yard conversion; 1.4 tons per yard is standard
- Measure depth in inches accurately; a 1‑inch error changes volume by ~7%
Real-life examples
- Planning a new rock garden and need exact material quantities
- Estimating rock fill for a driveway border to avoid multiple deliveries
- Calculating weight for a truck rental when ordering landscape rock
Case study
Sam wanted a 12‑ft × 10‑ft patio with a 3‑in rock base. Using the calculator he saw he needed 0.83 yd³, about 1.2 tons, and ordered exactly that amount, saving a $150 over‑order and completing the project on schedule.