How to use it
- Enter the length of your area in feet.
- Enter the width of your area in feet.
- Enter your desired rock depth in inches.
- Read the cubic yards, tons, and cubic feet results immediately.
Stop guessing how much rock to order. This calculator tells you exactly how many cubic yards, tons, and cubic feet of bag rock fit your space. You just type in the length and width of the area in feet, plus how deep you want the rock in inches. The tool does the math instantly. Why does this matter? Ordering too little means running to the store mid-project. Ordering too much wastes money on material you cannot use. Our estimate uses a standard weight constant of 1.4 US tons per cubic yard to convert volume into a weight you can actually budget for. Use the cubic feet number to verify against bag counts if buying small loads. The cubic yards number tells the dump truck how much to haul. Get the right amount the first time.
Pro tips
- Add 10% extra for waste and spillage when measuring uneven ground.
- Round up to the nearest whole yard since trucks rarely deliver fractions.
- Order slightly more than calculated to avoid running out mid-lay.
- Measure depth in multiple spots and use the average for accuracy.
Real-life examples
- Laying a new driveway apron to replace cracked concrete.
- Covering a flower bed to suppress weeds and retain moisture.
- Filling a drainage trench behind a retaining wall.
Case study
Mark needed rock for a 10x10 patio. He measured 4 inches deep and entered the numbers. The calculator showed 12.3 cubic feet, 0.46 cubic yards, and 0.64 tons. He ordered one ton and had just enough left over for the edges, saving him a second delivery fee and wasted material.