Ideal Body Weight Calculator
Formulas compared
Ideal body weight equations start with a baseline mass and add or subtract a linear amount for each inch over or under 5 feet. The Devine formula, for example, is represented in MathML as , where is height in inches and equals 50 kg for men or 45.5 kg for women. Other formulas follow the same structure with different constants derived from their study populations.
The calculator converts centimeter inputs to inches by dividing by , applies each formula, and finally reports weights in kilograms and pounds. The results act as reference points rather than medical prescriptions, helping clinicians adjust drug dosages or patients set nutrition goals.
Height scenarios
Explore how small height changes influence target ranges.
| Height | Sex | Average of formulas (kg) | Average (lb) |
|---|---|---|---|
| 160 cm (5'3") | Female | 55.4 | 122.2 |
| 175 cm (5'9") | Male | 70.8 | 156.1 |
| 188 cm (6'2") | Male | 81.6 | 180.0 |
Because each equation was designed for slightly different patient cohorts, your outputs will vary by a few kilograms. Reviewing the spread helps set realistic expectations and provides a range for clinical decision making.
Put the numbers to work
Use the values as guardrails when discussing healthy weight targets, medication dosing, or nutrition plans. Always factor in body composition, bone density, and individual medical history before acting on the figures alone.
Continue evaluating wellness metrics with the BMI Calculator, estimate energy needs using the Total Daily Energy Expenditure Calculator, and track strength goals alongside the Lean Body Mass Calculator.