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 Length (Inches Side to Side) :

Front Length (Inches Side to Side):

Depth (Inches Front to Back):          

Total Pounds Needed:                  


Width x Depth x 4/30 =pounds needed


Glass weighs about 12 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 10 years of test burning.