Breastmilk Alcohol Calculator
The Breastmilk Alcohol Calculator estimates current blood alcohol concentration using your weight, drink type, and time elapsed. This tool helps breastfeeding mothers determine exactly when it is safe to nurse again. Whether you enjoyed a single glass of wine or multiple drinks, this calculator tracks your alcohol metabolism. You can make confident, informed decisions to keep your baby safe.
Quick Examples
How Current Alcohol in Breastmilk Is Calculated
Current alcohol in breastmilk closely mirrors your blood alcohol concentration (BAC). It is calculated by measuring the total alcohol consumed and subtracting the amount your body has metabolized over time. First, the tool converts your drinks into standard alcohol units based on the beverage type. Next, it uses the Widmark formula to distribute this alcohol into your body water, adjusting for your specific weight. This step is crucial because heavier individuals generally have lower concentrations. Finally, the calculator subtracts the alcohol your liver has processed, assuming a standard elimination rate. This method provides a reliable estimate for safety planning.
What Your Current Alcohol in Breastmilk Means
This percentage reveals the exact concentration of alcohol in your breastmilk, which is virtually identical to your blood alcohol concentration. Understanding this level helps you protect your infant from exposure while managing your own comfort.
Safe to Nurse (0.00% - 0.02%) means the alcohol amount is negligible. You can breastfeed immediately without worrying about disrupting your baby’s sleep patterns or feeding behaviors.
Moderate Caution (0.02% - 0.05%) indicates low levels are present. While not usually dangerous, this amount might make your baby drowsy or restless, so it is safer to wait.
Unsafe to Nurse (> 0.08%) signals high concentration. You should not breastfeed at this level. Use expressed milk or formula until the level returns to zero.
Important: Remember that drinking water, sleeping, or drinking coffee does not speed up the process. Your body needs time to metabolize the alcohol naturally.
This calculator is for informational purposes only and does not constitute medical advice. Always consult your pediatrician or healthcare provider regarding specific alcohol intake and breastfeeding safety.
Check your levels again every hour to track your progress safely.