Insulation Calculator
Estimate how much insulation to buy using your measured area and the coverage printed for the product you plan to use.
Method
Purchase area = net area × (1 + waste rate). Exact packages = purchase area ÷ manufacturer coverage. Whole packages are rounded up.
The thermal-value field is a project note only. This tool does not decide what thermal target your building requires.
🧭 What's Your Next Decision?
- 🧱 Estimating masonry or bricks? → Brick Calculator
- 🪵 Planning patio or decking timber? → Decking Calculator
- 📐 Measuring surface or floor area? → Square Footage Calculator
- 🏗️ Pouring footings, slabs or foundations? → Concrete Calculator