Gravel Depth Calculator
Two questions in one tool. Pick an application and it tells you the correct depth and the quantity to order. Or enter the amount of stone you already have and it tells you how deep you can spread it across your area.
What you'll need
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Orange Mason Line String Line - #18 Braided Nylon String - 250 Ft Length - Nylon Twine for Gardening Or Masonry Tools - Perfect Construction String for A String Level, Twine String for Gardening
$7.99
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VEVOR Landscape Rake, 36" Head Aluminum Lake Weed Rake with 75" Long Handle for Loosening Soil, Lawn Care, Weeding Lake, Garden, Silver
$37.48
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BlumeTrec 8"x8" Steel Tamper with 48" Handle, Heavy Duty Hand Compactor Tool for Leveling Soil, Gravel, Sand, Asphalt, Ground, Paver, Driveway, Garden, Yard and Blacktop Repair
$43.99
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Rust-Oleum Professional 2X Inverted Marking Fluorescent Orange Spray Paint
$43.25
View on Amazon →Prices as of Sep 25, 2026, 6:18 PM UTC. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Get the Gravel & Stone Calculator app for Android
Estimate gravel, stone, sand, and mulch on the job site, save projects, and share quantities with your supplier.
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Frequently asked questions
- How deep should gravel be?
- Two inches for decorative beds, two to three for paths, four to six for patio and shed bases, and eight to twelve for a new driveway built in layers.
- Can gravel be too deep?
- Yes. More than about three inches of loose stone on a walking surface is unpleasant to walk on and unstable underfoot. Depth belongs in the compacted base, not the surface course.
- How thick should each compacted layer be?
- No more than four inches per lift, and two inches is better. A plate compactor simply cannot densify a deeper layer all the way through.
Related calculators
All calculators →Gravel Calculator
Work out exactly how much gravel you need in cubic yards, tons, and bags for any area and depth.
Open calculator →Cubic Yards to Tons Calculator
Convert between cubic yards and tons for any gravel type, using real in-place densities.
Open calculator →Gravel Coverage Calculator
See how much area one ton or one cubic yard of gravel will actually cover at your chosen depth.
Open calculator →