Health and clinical reference
Ideal and adjusted body weight calculator (Devine)
Ideal body weight by the Devine formula from height and sex, and adjusted body weight when actual weight is above it, in kg or lb.
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For information only. This is a reference calculation, not medical advice or a diagnosis, and it must not be used to choose or adjust medicine doses. Discuss any result or health decision with a qualified clinician.
0 to 11.9 inches, added to the feet.
Needed for the adjusted body weight.
Needed for the adjusted body weight.
Result
Method and limits
The Devine formula gives a reference weight from height; adjusted body weight adds 40% of the difference between actual and ideal weight.
Ideal body weight (kg) = 50 (men) or 45.5 (women) + 2.3 × (height in inches − 60)
Adjusted body weight = IBW + 0.4 × (actual weight − IBW)Assumptions and limits
- Written for adults 5 feet (152.4 cm) and taller; below that it extrapolates.
- A reference value, not a target or healthy-weight recommendation, and this page does not calculate doses.
Worked example
A woman 175 cm tall (68.9 in): IBW = 45.5 + 2.3 × 8.9 = 66.0 kg. At an actual weight of 90 kg, adjusted body weight = 66.0 + 0.4 × 24.0 = 75.6 kg.
References
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