BAC Calculator

Estimate Blood Alcohol Content with a premium, responsive interface. Compare against UK and Scotland legal driving thresholds, track drink history, and review responsible drinking guidance in real time.

Current BAC

0.025%

Status

Low

BAC mg/100ml

Responsible use reminder

No online BAC Calculator should be used to determine an individual's fitness to drive. REMEMBER THE ONLY 100% SAFE ALCOHOL DRIVING LIMIT IS 0.

1. Personal info

Gender and weight

Dynamic BAC estimate

Gender

Weight

Lbs

How it works

The Widmark method estimates alcohol concentration using the total grams of alcohol, body weight, gender distribution factor, and elapsed time since drinking.

2. Drinking timeline

Time since last drink

Hours

Minutes

Estimated BAC now

0.025%

Approx. 25 mg/100ml

Risk

Low

3. Drinks consumed

Add beer, wine, or spirits

Drink 1

Lager

% ABV5.0%

How Many

Disclaimer

No online BAC Calculator should be used to determine an individual's fitness to drive. REMEMBER THE ONLY 100% SAFE ALCOHOL DRIVING LIMIT IS 0. This estimator is informational only and may not reflect your true impairment.

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