Use this chart as a guide to the number of ‘standard’ drinks you can have and still remain under 0.05.  For example, a 60 kg (132 lb) female can have 2 drinks in the first hour, followed by 1 drink in the second hour, then skip an hour, then 1 drink in the 4th hour and 1 last drink in the 5th hour.

50 kg = 110 lbs
60 kg = 132 lbs
70 kg = 154 lbs
80 kg = 176 lbs
90 kg = 198 lbs
100 kg = 220 lbs

Remember: the only way to be certain of your BAC is to have a breath or blood test.

Source: Government of South Australia – Drug & Alcohol Services

The complete, printable wallet card is attached below.

More tips to help you stay under 0.05:
> use standard drinks to monitor your drinking
> get to know how many you can have to be under 0.05
> eat before you drink
> drink slowly and don’t top up drinks
> choose alcohol-free or low-alcohol drinks and have alcohol-free spacers between drinks

If you think you may drink too much to drive, plan ahead:
> choose a designated driver
> take a taxi, bus or train
> share a ride with others