7 Best Breathalyzers Tested for Accuracy in 2025

Wondering how we select the best products for you? Learn More Our rankings come from analyzing thousands of customer reviews, looking at factors like product quality, brand reputation, and merchant service. These rankings aim to help guide your shopping choices. By using our recommendations, you'll find the best available prices. We may receive a commission on purchases, at no extra cost to you, which supports our work.

Best Value

2

BACtrack

BACtrack Trace Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use

9.7 Professional Accuracy

9.6 Portable Design

9.6 Easy Operation

Why we love it

Police-grade platinum sensor with ±0.005% accuracy at 0.050 BAC

Compact size smaller than iPhone 5 with memory for 10 readings

DOT/NHTSA approved with 10-second result display time

Main highlights

Professional-Grade Technology

Features platinum-based fuel cell sensor technology, DOT approval, and medical-grade accuracy trusted by law enforcement and healthcare professionals.

Ideal for Personal Safety Monitoring

Perfect for individuals, parents, college students, and party hosts who need quick, accurate blood alcohol content measurements.

Praised for Reliability and Portability

Users appreciate its pocket-sized design, simple one-button operation, and consistent accuracy matching professional-grade breathalyzers.

9.7

Exceptional

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3

BACtrack

BACtrack C8 Breathalyzer | Professional-Grade Accuracy | Optional Wireless Smartphone Connectivity | Compatible w/ Apple iPhone, Google & Samsung Android Devices | Apple HealthKit Integration

9.5 Accuracy

9.5 Easy to Use

9.5 Smart Features

Why we love it

Professional-grade fuel cell sensor for accurate alcohol level measurement

ZeroLine technology estimates time until BAC returns to zero

Dual-mode operation with standalone and smartphone connectivity options

Main highlights

Key Features

Features professional-grade sensor technology, smart BAC tracking, Uber integration, and flexible standalone or connected operation modes.

Ideal for Safety-Conscious Individuals

Perfect for responsible adults who want to make informed decisions about their alcohol consumption and ensure safe transportation.

Praised for Professional Accuracy

Users appreciate the law enforcement-grade accuracy, real-time BAC monitoring, and convenient smartphone integration for reliable results.

9.4

Excellent

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4

BACtrack

BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional Wireless Smartphone Connectivity | Compatible w/ Apple iPhone, Google & Samsung Android Devices | Apple HealthKit Integration

9.3 Accuracy

9.3 Easy to Use

9.2 Versatile Functionality

Why we love it

Professional-grade fuel cell sensor for accurate alcohol level measurement

ZeroLine technology estimates time until BAC reaches 0.00%

Dual-mode operation with standalone and smartphone connectivity options

Main highlights

Key Features

Features professional BluFire sensor technology, ZeroLine estimation capability, and flexible standalone or smartphone-connected operation modes for comprehensive testing.

Ideal for Safety-Conscious Social Drinkers

Perfect for individuals who want to make responsible decisions about drinking and driving, with direct Uber integration.

Praised for Professional-Grade Accuracy

Users consistently praise the C6's law enforcement-grade accuracy and reliable performance, matching the quality of professional testing equipment.

9.2

Excellent

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5

BACtrack

BACtrack Element Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use

Main highlights

PRO-GRADE ACCURACY - Powered by BACtrack's platinum-based Xtend Fuel Cell Sensor, the Element utilizes the same professional-grade technology trusted by hospitals, clinics, and even law enforcement.
ONE-BUTTON OPERATION - The BACtrack Element is extremely easy to use. Simply insert the two included AAA batteries, power on your breathalyzer and begin testing. It's that easy.
DOT/NHTSA COMPLIANT - Designed to meet the rigorous standards of expert alcohol screeners, from roadside law enforcement to hospital employees & treatment professionals, the Element is compliant with US DOT & NHTSA regulations for alcohol screening devices.
SMALL & PORTABLE SIZE - The Element is BACtrack's smallest professional breathalyzer, making it easy to take with you anywhere you go. Measuring just 4.25 x 1.875 x 0.625 inches, it's much smaller than an iPhone, and easily fits in a purse or pocket.
ONE YEAR WARRANTY - If your BACtrack Element ceases to function properly during the first year of operation, we will repair or replace the defective product at no charge.

9.0

Excellent

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6

BACtrack

BACtrack Scout Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use

Main highlights

PROFESSIONAL-GRADE ACCURACY - Powered by BACtrack's platinum-based Xtend Fuel Cell Sensor, the Scout utilizes the same pro-grade technology trusted by hospitals, clinics, and even law enforcement.
SIMPLE, ONE-BUTTON OPERATION - The BACtrack Scout is extremely easy to use. Simply insert the two included AAA batteries, power on your breathalyzer and begin testing. It's that easy. Your BAC results are displayed 10 seconds later on a bright LCD screen.
DOT/NHTSA COMPLIANT - Designed to meet the rigorous standards of expert alcohol screeners, from roadside law enforcement to hospital employees & treatment professionals, the Scout is compliant with US DOT & NHTSA regulations for alcohol screening devices.
SMALL & PORTABLE SIZE - The Scout is BACtrack's smallest professional breathalyzer, making it easy to take with you anywhere you go. Measuring just 4.25 x 1.875 x 0.625 inches, it's much smaller than an iPhone, and easily fits in a purse or pocket.
ONE YEAR WARRANTY - BACtrack stands behind every product we manufacture and sell, but if during the first year of operation any unit ceases to function properly, we will repair or replace the defective product at no charge.