Fire Glass Calculator
Calculate how much fire glass you need for fire pits, fire tables, and fireplaces. Get pounds and bag counts for round or square fire features.
Fire Glass Needed
Area3.14 sq ft
Required Volume0.524 cu ft (905 cu in)
Weight Needed84.3 lbs
5 lb Bags17
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Frequently Asked Questions
How much fire glass for a 36" fire pit?
A 36" round fire pit at 2" depth needs about 27 lbs of fire glass or 6 bags (5 lb bags).
Can I mix fire glass colors?
Yes. Purchase separate bags and layer or mix for custom looks. Most installations use 1-2 colors.
What depth of fire glass do I need?
2" is standard for gas fire pits. Too little exposes the burner; too much wastes fuel and glass.