How to Use the Free Bushfire Attack Level Calculator

The BAL calculator allows you to find the BAL for any site in Australia with five simple inputs, using both the simplified method and the detailed (Appendix B) method simultaneously.

Signing up for a Calcs.com account unlocks further advanced features for design and analysis. The sheet has Key Properties (inputs), Summary (calculated BAL and design considerations), Advanced Parameter Overrides, and Detailed Method Results.

Only five key inputs are required for most BAL calculations: Fire Danger Index, BAL Low Threat Exclusion, Vegetation Classification, Distance Between Site and Classified Vegetation, and Effective Slope Under Classified Vegetation.