🍷 TODAY ONLY: Use Code WINE for 10% Off + Free US Shipping! 🍷



Conventional wisdom says that it should take an "average person" about 3-4 glasses of wine to reach 0.08% BAC... but is that true for you personally? Are you sure?

Factors That Affect BAC

Many people wonder how "many glasses of wine does it take to get legally drunk?", but with so many factors affecting blood alcohol content (BAC), and because alcohol affects everyone differently, the answer will be different for each person. Luckily, a breathalyzer from BACtrack can give you an accurate estimate of your BAC without having to know your age, height, weight, gender, what kind of wine you drank etc.

BACtrack C6 Keychain Breathalyzer

Stop Guessing & Start Knowing

Unlike drink charts and online calculators, BACtrack breathalyzers don’t use generalizations or rules of thumb that may not reflect you personally.

Instead, they measure the amount of alcohol actually in your breath and then estimate your BAC, with pro-grade accuracy. No other method is quite so fast, convenient and reliable.


WATCH: How Does Eating Before You Drink Wine Affect Your BAC?

We gave Tiffany two large pieces of pizza before she started drinking wine. Brittany started on an empty stomach. We then tracked their BAC for the next four hours. Watch to see the results!

Read Customer Reviews

Frequently Asked Questions

  • How accurate are BACtrack devices?
  • How often do they need to be calibrated?
  • Which BACtrack is right for me?

BACtrack uses carefully-engineered technology to deliver reliable, consistent BAC results, with unparalleled accuracy.

Several independent agencies have tested commercially available breathalyzers against an evidential police breathalyzer device and found BACtrack is the most accurate. To learn more, click here.

Our general recommendation is that you get your BACtrack calibrated every 12 months or so, but it really depends on how your BACtrack is performing. With proper care and usage, we've seen that our devices can go for 1000's of tests before needing calibration.

All BACtrack products are calibrated in our San Francisco offices by professionally trained technicians. To learn more, click here.

We have a wide range of breathalyzers for every alcohol testing need. You can begin by using the filters on our Store Page to better narrow down your choice. If you're still having trouble, please give us a call at 415-693-9756 and we'd be happy to help you find the right BACtrack for you.

WATCH: Are Personal Breathalyzers Accurate?

FOX 2 Detroit and Allen Park police teamed up for a study including five people drinking alcohol to test a BACtrack C6 keychain breathalyzer against the police-issued machines to see just how accurate personal breathalyzers actually are. SPOILER ALERT: The C6 matched the police breathalyzer every step of the way.