I can only re-iterate how useful it would be for us UK brewers if we had a chance to opt-in to the "UK HM Revenue & Customs" way of calculating ABV in BeerSmith2. It is a

**dead simple algorithm**, that only uses OG, FG (they call FG "PG", for Present Gravity, but they mean the same as FG) and a conversion factor from a lookup table.

(OG - FG) Ã— Factor = %ABV (

**truncated** to 1 decimal).

**(OG - FG)** | **Factor** |

Up to 6.9 | 0.125 |

7.0 - 10.4 | 0.126 |

10.5 - 17.2 | 0.127 |

17.3 - 26.1 | 0.128 |

26.2 - 36.0 | 0.129 |

36.1 - 46.5 | 0.130 |

46.6 - 57.1 | 0.131 |

57.2 - 67.9 | 0.132 |

68.0 - 78.8 | 0.133 |

78.9 - 89.7 | 0.134 |

89.8 - 100.7 | 0.135 |

There is no guidance on how to handle values >100.7 but I interpret the last factor as "89.8 and up".

**Example:**OG = 1057

FG = 1018

The difference between 1057-1018 is 39.

As 39 is within the 36.1 - 46.5 range in the lookup table, factor 0.130 should be used.

(1057-1018) x 0.130 =

39 x 0.130 = 5.07

**5.07 is truncated to 5.0 **(Not rounded using common rounding which would give 5.1)

**Hence the ABV calculated in the UK Revenue & Customs suggested way results in 5.0%. The BeerSmith2 default algorithm would calculate the Est ABV to 5.1%. If this UK HM Revenue & Customs algorithm could be implemented as an opt-in setting (Advanced Settings) it would make it much easier for us in the UK who need to calculate ABV the HMRC way.**Thanks in advance on behalf of UK professional brewers!

/anders