BGL Formula Collection

May 21, 2026

For users of the online version, we have compiled a formula collection for BGL 2025.

In the formula collection, you will find all the calculations needed to determine the relevant values for equipment sizes. The formula collection thus serves as a valuable supplement to the basic information and illustrates the concrete application of the rules defined therein. In particular, the formula collection indicates at which point in the calculations the BGL rounding rules come into effect.

You can find the downloadable file on the dashboard of your BGL app under “Working Material”.