Insulation Calculator
Enter the dimensions of the space you want to insulate (length and width) in your preferred units. Provide a waste percentage, the coverage (in ft²) per insulation bag or roll, and the cost per bag/roll. Our calculator will estimate how many rolls/bags you need and the total cost.
About Our Free Insulation Coverage Calculator
Planning to insulate a space and unsure how many bags or rolls you need? Our Insulation Coverage Calculator simplifies the process: just enter your area dimensions, waste percentage, coverage per bag/roll, and cost. It will provide how many units of insulation you need and the total estimated cost, helping you budget and avoid buying too much or too little.
How It Works:
- We compute floor area from the length and width (converted to square feet).
- We add waste (e.g., 5–15%) to account for odd cuts and overlap.
- Then we divide by the coverage per unit to find how many bags/rolls you need, rounding up since you can’t buy partial units.
- The total cost is simply units needed × cost per bag/roll.
Feel free to embed this insulation calculator on your own site using the iframe code above. For more home improvement and construction tools, check out Apex Calculator.