Health

Blood Alcohol Calculator

Estimate BAC by weight and drink total, then see how the estimate fades over time.

by weightover timeestimate onlydrink countabvbac estimate

Result // Widmark estimate

Blood alcohol snapshot

Estimate only

Current BAC

0.040%

Computed at the selected elapsed time.

Time to 0.00%

2.7 h

Clear around hour 4.7 since drinking started.

Pure alcohol

1.8 oz

42.0 g in the drink total.

Estimate only

This is a rough estimate. It does not replace legal, medical, or safety judgment.

Hourly timeline

The estimate steps forward in one-hour increments and ends on the first zero row.

Clear around 4.7 h

PointEstimated BAC
Now0.040%
+1h0.025%
+2h0.010%
Clear0.000%

Feature request

Need a change for Blood Alcohol Calculator?

Related calculators

Quick jumps