Body composition
Ideal Weight Calculator
See a healthy weight range for your height, based on the Devine formula used in clinical dosing calculations since the 1970s.
Body composition
See a healthy weight range for your height, based on the Devine formula used in clinical dosing calculations since the 1970s.
Estimated ideal weight
No single number can capture a "correct" weight for every body. We show a ±10% band around the formula result, since healthy weight varies with muscle mass, frame size, and individual health.
Pair this with our Body Fat Calculator for a fuller picture.
"Ideal weight" formulas were originally developed in medicine to help estimate drug dosages, not to define an aesthetic target. Over time they've become a popular reference point for general health, but they should be read as a rough guide, not a strict goal.
This calculator uses the Devine formula, one of the most widely referenced ideal-weight equations in clinical settings:
Men: 50 kg + 2.3 kg for each inch over 5 feet
Women: 45.5 kg + 2.3 kg for each inch over 5 feet
We then show a range of roughly ±10% around that number, since a single figure rarely reflects the full picture of a healthy body.
Treat the range as a reference point, not a target to hit exactly. Frame size, muscle mass, age, and overall health all affect what's realistic and healthy for a given person. If your result seems very far from your current weight, a conversation with a healthcare provider is more useful than the number alone.
The Devine formula was designed for quick clinical estimates, trading some precision for simplicity. It doesn't account for frame size or muscle mass, which is why we present a range rather than one exact figure.
No. Being below the healthy range can carry its own risks. The goal is a sustainable, healthy weight for your individual body — not the lowest possible number.
BMI uses both height and weight to classify a result you already have. Ideal weight formulas work the other direction — starting from height to suggest a target range. Try our BMI Calculator to see both perspectives.