Decomposed Granite Calculator
Decomposed granite compacts into a firm, natural surface, which makes it the go-to for garden paths and dry-climate landscaping. This calculator sizes both loose and stabilized DG, and adds the stabilizer binder quantity when you need a surface that holds up to traffic.
What you'll need
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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
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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.
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Frequently asked questions
- How deep should decomposed granite be?
- Two inches for decorative beds, three inches for walking paths, and four inches for patios or areas that see light vehicle traffic. Always compact in lifts rather than all at once.
- What is stabilized decomposed granite?
- DG mixed with a binder — usually a psyllium or acrylic-based stabilizer at roughly 12 pounds per ton — that locks the fines together into a firm, water-shedding surface that resists tracking.
- How much does decomposed granite cost?
- Bulk DG runs $40 to $85 per ton delivered. Stabilizer binder adds roughly $40 per 50 lb bag, and a typical path needs about one bag per ton of DG.
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