1-4-the-road wrote:
1 UK unit is 10ml of pure alcohol. 1 US unit is 17ml of pure alcohol. 1 US Fluid oz ~ 30ml
If you have 12oz of beer at 5% that is 0.6 oz of pure alcohol = 18ml of pure alcohol which is just over 1 US unit.
Unless you drink a very wide variety of drinks, it is pretty easy to figure out once how many units there are per glass/bottle/can etc
Thanks - that seems pretty close to what I came up with. When my wife gets back from a wedding I think I'll have her help me make a spreadsheet that does the unit conversion for me. Because me and math? Not buddies.