I doubt it will be of any benefit. How would it help if you knew that bottle of liqueur contans 125ml of pure alcohol? Or that bottle of Sauvignon Blanc contains 98ml? Or a can of beer 15ml?

I suppose you need to multiply. And you need to factor in all of that additional info anyways. How much wine do you drink? The whole bottle? How much alcohol can you tolerate? (What do you weigh…) And how much sugar is in the beverage, because that also affects things and is extra work for your liver, too.

But it’s a good question. And sugar, caffeine etc are in fact measured in percentage. At least in europe you always have a measurement per 100ml or 100g written on the packaging, which is kind of the percentage. Interestingly enough it’s not written on wine, liqueur etc.