Landscaping Rock Calculator
Tons of decorative rock for a bed.
Enter your values
ⓘ Live results
Results
- Rock needed
- 1.67 tons
- Volume
- 1.23 cu yd
- 0.5 cu ft bags needed
- 67
Quick answer
Rock volume is area times depth converted to cubic yards, then to tons using the rock's density.
tons = (area x depth / 27) x density (tons/cu yd)
How to use the Landscaping Rock Calculator
- 1Measure the bed area and decide a depth, typically 2-3 inches for decorative rock.
- 2Use the rock's density, often 1.2-1.5 tons per cubic yard depending on stone size.
- 3Order in tons for bulk delivery or bags for small areas.
Worked example
Using the values the calculator loads with:
Inputs
- Bed area200 sq ft
- Depth2 in
- Density1.35 tons/cu yd
Results
- Rock needed1.67 tons
- Volume1.23 cu yd
- 0.5 cu ft bags needed67
Frequently asked questions
How deep should decorative rock be?
2-3 inches is standard for ground cover rock; deeper for erosion control.
Do I need landscape fabric underneath?
Yes, it is recommended to reduce weed growth and stone sinking into the soil.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.