What gravel goes in the bottom of a fire pit?

Washed #57 crushed stone, four to six inches deep, for drainage. Avoid river rock and pea gravel inside the pit — rounded stone that has been water-worn can trap moisture and crack or pop when heated.

How far should gravel extend around a fire pit?

At least three feet of non-combustible surface in every direction, and five to seven feet if you want chairs on the gravel too. Check your local code and the pit manufacturer's spec.

How deep should gravel be around a fire pit?

Two to three inches over compacted base and landscape fabric is plenty for a seating surround.

Landscaping

Fire Pit Gravel Calculator

Two separate quantities matter here: the drainage stone inside the pit, and the non-combustible gravel ring around it. This calculator sizes both, using the clearance distance that most codes and manufacturers call for.

What you'll need

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Fire Pit Spark Screen, Fire Pit Screen 36 Inch Round with Handle & Poker

$75.99

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NUPICK 10lb Red Lava Rocks for Fire Pit, Volcanic Rock for Fireplace

$19.99

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33ft. Galvanized Steel Landscape Edging (10-Pack) – 40" Metal Edging for Landscaping with 11 Stakes, Hammer-in Metal Landscaping Edging for Yard Pathway & Flower Beds – Lawn Edge for Garden Design

$69.99

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DenicMic Solar Lights Outdoor Waterproof 10 Pack Pathway Lights Cool White

$20.69

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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

What gravel goes in the bottom of a fire pit?: Washed #57 crushed stone, four to six inches deep, for drainage. Avoid river rock and pea gravel inside the pit — rounded stone that has been water-worn can trap moisture and crack or pop when heated.
How far should gravel extend around a fire pit?: At least three feet of non-combustible surface in every direction, and five to seven feet if you want chairs on the gravel too. Check your local code and the pit manufacturer's spec.
How deep should gravel be around a fire pit?: Two to three inches over compacted base and landscape fabric is plenty for a seating surround.