Adjusted Weight Calculator

Free calculate adjusted body weight for medication dosing. Get instant, accurate results with our easy-to-use calculator.

Patient Information

Results

Enter patient information to calculate adjusted weight

About Adjusted Weight

  • • Ideal Body Weight (IBW): Used for normal weight patients
  • • Adjusted Body Weight (ABW): Used for obese patients (BMI >30)
  • • ABW = IBW + 0.4 × (Actual Weight - IBW)
  • • Used for medication dosing in obese patients