source:
https://www.health.gov.au/health-topics/alcohol/about-alcohol/standard-drinks-guideStandard drinks guideStandard drinks are a way to keep track of how much alcohol you're really drinking. To find out how many standard drinks you're having, check your drink label. You can also use our handy guide, try a standard drinks calculator or ask staff.
Take the source link above.
Advice to motorists in AustraliaAs a general guide, to stay below the open licence limit of 0.05% BAC: Males can have a maximum of two standard drinks in the first hour, and one standard drink each hour after that; Females can have a maximum of one standard drink in the first hour, and one standard drink each hour after that.