Key facts
- Estimated from height and frame size.
- A general guideline, not a strict goal.
- Doesn't account for muscle mass.
- Composition matters more than a single number.
Ideal body weight formulas estimate a healthy weight range based mainly on your height. They can be a useful starting reference — a ballpark for where a healthy weight might fall — but they're blunt tools that don't know anything about your body composition.
Because they ignore muscle, a strong, lean person can sit 'above' their ideal body weight while being perfectly healthy, just as someone 'at' it could carry excess fat and little muscle. Treat ideal body weight as a loose guideline and lean on body fat percentage, how you look and feel, and health markers for a truer picture.
Frequently asked questions
How is ideal body weight calculated?
Most formulas estimate a healthy range primarily from your height, sometimes adjusted for frame size. They're approximate and don't account for muscle mass.
Should I aim for my ideal body weight?
Use it as a rough guide, not a strict target. Body composition — how much muscle and fat you carry — matters far more than hitting a specific number.
Get the app