blood alcohol concentration (bac)


female
male
weight in kilograms
num standard drinks
hours drinking
 
bac is
zero bac
calories

calculate bac

((num x 10) - (hrs x 7.5)) ÷ (kg x gender)

time to revert to zero bac

bac ÷ 0.015

abbreviations & assumptions

num: number of standard drinks
hrs: drinking time in hours
kg: your weight in kilograms
gender: 5.5 for women and 6.8 for men
0.015: alcohol dissipates at 0.015g per hour
abv: alcohol by volume
0.8: specific density of alcohol
7: the number of calories in a gram of alcohol

calculate a standard drink

(litres) x (alcohol by volume) x (alcohol density)

750ml at 13% has 7.7 standard drinks
0.75 x 13% x 0.789 = 7.69

calories in red wine

abv
std drink
12.5%
7.4
13.0%
7.7
13.5%
8.0
14.0%
8.3
calories 518 546 567 588
grams alcohol 525 546 567 588

diy - calories via standard drink

Multiply the number of standard drinks by 70. Why 70? Because 1g alcohol has 7 calories and 1 standard drink has 10g alcohol.

num std: = calories:

diy - calories via grams alcohol

The formula is: ((abv x 0.8 x ml) ÷ 100) x 7

abv: ml: =

connie & orlando 2019