What is ideal body weight?
Ideal body weight is an estimated target weight based on height, sex-based formula inputs, and body frame. It is a planning number, not a medical diagnosis or a single perfect weight.
4 formulas · frame-size adjusted
Ideal Weight Calculator — Find Your Healthy Target Weight
Use this ideal weight calculator to estimate a healthy target weight range from your height, gender-based formula inputs, and frame size. FitForge compares the Devine, Hamwi, Robinson, and Miller formulas instead of pretending one number is perfect. Enter feet and inches or centimeters, choose a small, medium, or large frame, and see the range in pounds and kilograms. If you add your current weight, the calculator shows how far above or below the range you are, then points you toward a realistic plan. Ideal body weight is best used as a planning checkpoint, not a medical verdict. Muscle mass, waist measurement, age, health history, and performance all matter. Use the result to set a direction, then pair it with sustainable strength training, protein-focused meals, daily movement, and weekly targets that make progress measurable without crash dieting or guesswork. It helps choose whether fat loss, maintenance, or muscle gain comes next.
4Proven ideal body weight formulas shown side by side.
3Frame sizes so the target is a practical range.
$2Upgrade path for weekly targets when you want the plan.
Ideal weight calculator FAQ
Which formula is most accurate?
No single formula is perfect for everyone. Devine, Hamwi, Robinson, and Miller each use different assumptions, so FitForge shows all four and turns them into a practical range.
How long does it take to reach ideal weight?
Most people do best with gradual progress, often around 0.5 to 2 pounds per week depending on starting weight, consistency, recovery, and health factors.
Is ideal weight the same as healthy weight?
Ideal weight and healthy weight overlap, but healthy weight also depends on body composition, waist measurement, strength, lab markers, medical history, and how you feel.