How do I convert a brand’s alcohol content by volume (ABV) to alcohol content by weight (ABW)? To convert from ABV to ABW, use the following formula: ABV x .8 = ABW October 15, 2019 13:42 Related articles How do I register varieties of the same brand? Are electric scooter rentals subject to sales tax? Are common carriers that deliver alcoholic beverages from direct shippers directly to consumers in Tennessee required to report such deliveries to the Department of Revenue? Are video programming services subject to tax?