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Fire Glass and Lava Rock Quantity Calculators

How to use the fire pit calculators:

  1. Select which calculator you need, Fire Glass or Lava Rock. Open using the orange arrow head on right-hand side.
  2. Select the shape of your fire pit, either Round, Square/Rectangular (also works for Linear), or fireplace.
  3. Enter the required dimensions in the appropriate boxes in inches only.
  4. The result will automatically show in the ‘Amount of Fire Glass Needed’ box.
  5. Use the ‘Clear’ button to reset the calculator.

Fire Glass Calculators

Round Fire Pits
Square/Rectangular Fire Pits
Rectangular Fire Pit Calculator
Square / Rectangular Fire Glass Calculator

Lava Rock Calculators

Round Fire Pits
Square/Rectangular Fire Pits
Rectangular Fire Pit Calculator
Square / Rectangular Fire Glass Calculator