MasterTool

Adjusted Body Weight Calculator

Calculate adjusted body weight (AdjBW) from actual weight, height and sex using the Devine ideal weight plus the 0.4 correction factor.

Loading calculator…

What this tool does

Calculate adjusted body weight (AdjBW) from actual weight, height and sex using the Devine ideal weight plus the 0.4 correction factor. The 0.4 correction factor is the commonly published convention. Adjusted weight is used in some clinical nutrition and dosing contexts by professionals — this tool only performs the arithmetic.

How to use the Adjusted Body Weight Calculator

  1. Enter or select actual body weight in lb.
  2. Enter or select height in in.
  3. Enter or select sex.
  4. Read the calculated result; change any measurement to compare alternatives.

Formula

IBW (Devine) = 50/45.5 kg + 2.3 kg per inch over 5 ft; AdjBW = IBW + 0.4 × (actual − IBW)
weight
Actual body weight (lb, before metric conversion)
height
Height (in, before metric conversion)
sex
Sex

The 0.4 correction factor is the commonly published convention. Adjusted weight is used in some clinical nutrition and dosing contexts by professionals — this tool only performs the arithmetic.

Worked example

For adjusted body weight calculator, the following measurements illustrate the exact method: Actual body weight: 220; Height: 69; Sex: male.

Inputs

  • Actual body weight220 lb
  • Height69 in
  • SexMale

Result

  • Ideal body weight (Devine)155.87 lb
  • Adjusted body weight181.52 lb

Results explained

Ideal body weight (Devine)
Ideal body weight (Devine) from the formula above, expressed in lb before metric conversion. The 0.4 correction factor is the commonly published convention. Adjusted weight is used in some clinical nutrition and dosing contexts by professionals — this tool only performs the arithmetic.
Adjusted body weight
Adjusted body weight from the formula above, expressed in lb before metric conversion. The 0.4 correction factor is the commonly published convention. Adjusted weight is used in some clinical nutrition and dosing contexts by professionals — this tool only performs the arithmetic.

Frequently asked questions

AdjBW sits between ideal and actual weight: AdjBW = IBW + 0.4 × (actual weight − IBW). It acknowledges that excess weight is partly lean tissue and fluid, not all fat.

A factor of 0.4 (some sources use 0.25) is the published convention estimating the metabolically active share of excess weight. This calculator uses 0.4 and states it openly.

Clinicians sometimes use it for nutrition support and certain weight-based calculations in patients with obesity. Those applications are professional decisions — this page only does the arithmetic.

Devine (1974): 50 kg (men) or 45.5 kg (women) at 5 ft, plus 2.3 kg per inch over 5 ft — the same base as this site's ideal weight tool.

Then the formula returns a value below actual weight, and adjusted weight is generally not applied — actual weight is used in practice. The output is shown for arithmetic completeness.