basic

Adjusted Body Weight for Drug Dosing Calculator

ABW = IBW + 0.4·(actual − IBW) — dosing weight for obese patients.

Calculates Adjusted Body Weight (ABW) from Ideal Body Weight (IBW) and actual body weight, used in pharmacokinetic drug dosing for obese patients.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

IBW_m = 50 + 2.3×(height_in−60); ABW = IBW + 0.4×(actual−IBW)

In depth

Calculates Adjusted Body Weight (ABW) from Ideal Body Weight (IBW) and actual body weight, used in pharmacokinetic drug dosing for obese patients.