Our fire glass calculator takes the guesswork out of your figuring out how much fire pit glass you’ll need when moving to or replacing this type of fire pit media.
Simply enter your fire pit’s dimensions and desired glass depth. Then, our tool instantly calculates exactly how much fire glass you need.
No more buying too little and making extra trips to the store.
Plus, you’ll avoid overspending on excess materials that sit unused in your garage.
Fire Glass Calculator
Calculate the perfect amount of fire glass for your gas fire pit
Fire Glass Required:
How This Calculator Works
This calculator uses industry-standard formulas based on the volume of your fire pit and the density of fire glass. The calculation follows these steps:
1. Calculate the area of your fire pit in square inches
2. Multiply by the desired glass depth to get volume in cubic inches
3. Apply the appropriate density factor to convert volume to weight in pounds
4. Calculate the number of standard 10-pound bags or containers needed
For standard fire pits (round, square, rectangular), we use a density factor of 0.052 pounds per cubic inch. For fire bowls, which typically have curved bottoms, we use a simplified formula that accounts for their unique shape: Area × Depth ÷ 28.
For more detailed information about fire glass calculations and tips, check out our comprehensive guide:
How Much Fire Glass Do I Need for My Gas Fire Pit?
