Landscape Stone Calculator
Estimate river rock, pea gravel, and decorative stone for landscaping designs, beds, and ground cover.
Quick Answer
To estimate landscape stone, multiply the bed's length × width × depth in feet, divide by 27 for cubic yards, then multiply by about 1.4–1.5 for tons. Use 2–3 inches for decorative cover; one cubic yard covers roughly 100–160 sq ft at that depth.
Landscape Stone Calculator Guide
The landscape stone calculator helps you master your garden design by providing accurate material estimates for any outdoor project. Whether you're planning a dry creek bed with large river rocks or a minimalist patio using marble chips, accurate calculation is the key to a professional finish and cost-effective material ordering. It doubles as a garden stone calculator for beds, borders, and pathways, as well as larger landscaping installs.
Proper landscape stone depth is critical: we recommend a 2-3 inch layer for decorative ground cover and 3-4 inches for high-traffic walkways or paths with permeable pavers. This tool converts your measurements into cubic yards and tonnage, accounting for the density of specific materials like decomposed granite, lava rock, or limestone screenings.
Beyond volume, consider using landscape fabric (weed barrier) under your stone to prevent mixing with the soil and minimize weed growth. For those comparing different aesthetics, explore our comparison of pea gravel vs. river rock to find the perfect match for your home's curb appeal.
Keep Your Landscape Stone Clean and Contained
Decorative stone looks great the day it goes down — the challenge is keeping it that way. Laying a heavy-duty weed fabric beneath the stone blocks growth from below while still letting rain soak through, so you're not pulling weeds out of gravel every spring. Edging the bed with steel landscape edging keeps the stone from creeping into the lawn or washing into paths, holding that crisp, designed line season after season.
Heavy-Duty Landscape Fabric
Blocks weeds beneath the stone while letting water drain through freely.
Check Price on AmazonSteel Landscape Edging
Keeps stone from creeping into the lawn, holding a crisp bed line for years.
Check Price on AmazonThe product links above are affiliate links — at no extra cost to you.
Frequently Asked Questions
What is the best stone for landscaping?
It depends on the use. For walkways, pea gravel or crushed stone is great. For decorative beds, river rock or lava rock are popular. For bases under patios, angular crushed stone is essential.
How deep should landscape rock be?
For decorative purposes, 1-2 inches is enough to cover the landscape fabric. for walkways or paths, aim for 3-4 inches for a stable surface.
Do I need to put down landscape fabric first?
Yes, it is highly recommended. Landscape fabric prevents weeds from growing up through your stones and also stops the stone from sinking into the soil over time.
How much area does one ton of landscape rock cover?
One ton of stone will typically cover about 100-120 square feet at a 2-inch depth. Our stone coverage calculator can give you precise numbers for your specific material and depth.
Is landscape stone better than mulch?
Stone is a more permanent, one-time investment that won't decompose or need replacing. Mulch can improve soil health but needs to be refreshed every year or two. The choice depends on your budget and maintenance preference.
How do I stop landscape rocks from scattering?
Installing a durable landscape edging around the perimeter of your project is the best way to keep stones contained and maintain a clean, tidy edge.
How much landscape rock do I need for a 100 sq ft area?
For a standard 2-inch depth over 100 square feet, you will need approximately 0.62 cubic yards or roughly 0.85 tons of standard landscaping stone. Use our square footage calculator for more precise area-based estimations.
Does landscaping stone prevent weeds?
Stone ground cover helps suppress weeds by blocking sunlight, but for best results, you should always install a high-quality geotextile fabric underneath. This prevents seeds from reaching the soil while allowing water and nutrients to pass through to your plants.