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🪨 Decorative Rock Cost Calculator

Estimate the cost to install decorative rock landscaping. Covers river rock, lava rock, and marble chips with landscape fabric and steel edging.

Project Details

Area (sq ft)

Square footage of the bed or area to cover with decorative rock

Depth (inches)

2-3 inches for decorative coverage; 4 inches for weed suppression

Rock Type (1=river rock, 2=lava rock, 3=marble chips)

1 = river rock (smooth, natural), 2 = lava rock (lightweight, porous), 3 = marble chips (white, elegant)

Your Estimate

Enter your details and hit Calculate to see results.

Recommended Tools & Supplies

Spread rock evenly across the bed surface

Haul bags of rock from the delivery point to the bed

Garden Edging Tool

Create a clean edge before installing steel edging

Protect hands from sharp rock edges during spreading

Editorial picks. Links go to Amazon — we may earn a small commission at no extra cost to you.

Pro Tips

✓ Always install landscape fabric before rock or weeds will come through within one season
✓ Lava rock is 50% lighter than river rock — fewer bags needed and easier on the back
✓ Steel edging keeps rock contained and creates a clean separation from lawn and mulch beds
✓ Wet the fabric before spreading rock to keep it from shifting while you work

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