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Measure the job · products in range

Fire Glass Calculator

Fire glass is sold by the pound and poured by the cubic inch. Measure the burner pan, not the pit surround, choose your depth, and this works out the weight.

Calculating for a specific glass?
Pick one and the bag size and price fill in from the listing.
The burner pan

What shape is it?

Measure the pan the glass sits in, not the outer edge of the pit.

Pan shape
(A) Pan diameter (in)
(B) Glass depth (in)
Bag size

When you pick a product above, its own bag size takes over. Two inches of depth keeps the burner ports just covered, which is where the flame looks best.

Measure guide
(A) Diameter (B)
You will need

An estimate, not a quote. Confirm final quantities with our team before ordering. Never use untempered glass in a fire feature.

How it works
1

Measure the pan

The glass fills the burner pan, not the whole pit. A fireplace hearth tapers, so it takes the front width, back width and depth.

2

Choose the depth

Two inches covers the burner ports and holds the flame low and even. Deeper looks fuller but burns no better, it just weighs more.

3

Weight, then bags

Volume at one hundred pounds per cubic foot, the industry figure for tempered glass, plus a tenth for spread, rounded up to whole bags.

Common Questions

FIRE GLASS QUESTIONS

The questions our counter answers most, before the first order ships.

Talk to Our Team
How deep should the glass sit?+
Deep enough that the burner ports are just covered, which is about two inches on most pans. More looks generous in the bag and identical in the flame.
Do I measure the pit or the pan?+
The pan. Glass poured across a wide pit surround wastes money and pulls heat away from the flame. Only the recess the burner sits in needs filling.
Is all fire glass the same weight?+
Near enough. Tempered fire glass runs about one hundred pounds per cubic foot regardless of colour or cut, which is the figure this uses.
Why add ten percent?+
Spread and settling. Glass shifts as it heats and cools, and the extra keeps the ports covered after the first season rather than just on day one.

Now find the glass.

Tempered fire glass in reflective and matte cuts, by the bag, for pits and fireplaces.

Shop fire glass
You will need
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Estimate
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Project estimate

Fire Glass Calculator

What you entered
Your fire feature
What to order
Assumptions
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