BAC Drunk Blog

Best Breathalyzers in 2025

Our Top 5 Personal Breathalyzers

Personal breathalyzers help you make smart choices about when it's safe to drive after drinking. Online BAC calculators like BACDrunk.com give helpful guesses, but a good breathalyzer gives you a more exact measurement of your blood alcohol level.

If you're new to understanding BAC and how it affects your body, read our guide on what BAC calculators are and how they work first.

Important
No personal breathalyzer should be the only thing you use to decide if you can drive. These devices aren't perfect and are meant to help you learn, not replace police equipment. The safest choice is always to avoid driving if you've been drinking.

BEST QUALITY
BACtrack S80 Pro

BACtrack S80 Pro

Police-grade sensor. Quick results in 10 seconds. Very accurate.

$130

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BUDGET FRIENDLY
BACtrack C6 Keychain

BACtrack C6 Keychain

Small enough for your keychain. Connects to your smartphone. Easy to carry.

$70

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HIGH QUALITY
BACtrack C8 Smartphone

BACtrack C8 Smartphone

Connects to iPhone and Android. Saves your results. Professional sensor.

$90

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BUDGET FRIENDLY
BACtrack Go Keychain

BACtrack Go Keychain

Very small and portable. One-button operation. Good for occasional use.

$40

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How to Choose a Breathalyzer

Types of Sensors

Breathalyzers use different types of sensors:

  • Fuel Cell Sensors: Most accurate, used by police, more expensive
  • Semiconductor Sensors: Less accurate, cheaper, good for home use

For the best accuracy, choose a fuel cell breathalyzer. They cost more but give better results.

Accuracy Levels

Different breathalyzers have different accuracy:

  • Professional Grade: ±0.005% BAC accuracy (very good)
  • Consumer Grade: ±0.05% BAC accuracy (still useful)
  • Basic Models: ±0.01% BAC accuracy (okay for general use)

Calculate Your BAC Now

The most accurate BAC calculator available online

Try Our BAC Calculator

Our Recommendation

For most people, we recommend:

BUDGET FRIENDLY
BACtrack C6 Keychain

BACtrack C6 Keychain

Small enough for your keychain. Connects to your smartphone. Easy to carry.

$70

VIEW ON AMAZON

A personal breathalyzer can be a useful tool for understanding how long alcohol affects your body.

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