FireCrystals

Fireplace Calculator
Having the correct amount of “FireCrystals” is important for a beautiful and efficient fireplace or fire pit. Below is a form to help you with the calculations; all you need to do is follow the instructions below and you are on your way! Use this formula for Rectangle Firepits as well.

SUGGESTION: Use less expensive glass on the bottom (i.e., clear, bronze, gray) to save on your overall cost.
Back  Width (A)
Front Width (B)
FP Depth (C)

(w·d·h) ÷ 22.5 in.³ is the formula for a rectangle

22.5 = cubic inches per pound of FireCrystals

Weight is 10.5 pounds per gallon

The formula calculates a 3 inch thickness in the fireplace, which will achieve the proper thermal dynamic efficiency that we have proven over the last 7 years of test burning:

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