Calculate Blood Alcohol Content

Body Weight

kg lbs

Your body weight

Gender Select gender Male Female

Your biological gender

Age (Years)

Your current age

Drinks Consumed

Beer (12 oz, 5% ABV)

Wine (5 oz, 12% ABV)

Spirits (1.5 oz, 40% ABV)

Number of each type of drink consumed

When did you start drinking?

Date and time you started drinking

Current Time

Current date and time

Food Intake Empty stomach Light meal Moderate meal Heavy meal

Amount of food consumed with alcohol

Calculate BAC Reset

About BAC

Blood Alcohol Content (BAC) is the percentage of alcohol in your bloodstream. It's affected by the amount consumed, body weight, gender, time, and food intake.

Legal Limits:

• US: 0.08% (0.05% in some states)
• UK: 0.08%
• Canada: 0.08%
• Australia: 0.05%

Metabolism Rate:

• • Average: 0.015% per hour
• • Range: 0.010-0.020% per hour
• • Affected by: age, health, medications

Important Factors:

• • Body weight and composition
• • Gender (women typically higher BAC)
• • Food intake (slows absorption)
• • Time since first drink
• • Type and strength of alcohol

Disclaimer:

This calculator provides estimates only. Actual BAC may vary. Never drive under the influence. Always designate a sober driver.