Question 1

What is ideal body weight?

Accepted Answer

Ideal body weight (IBW) is the weight considered optimal for your height, gender and frame size. Medical formulas like Devine and Robinson estimate IBW based on height above 5 feet. Healthy weight ranges are BMI 18.5–24.9 for most adults.

Question 2

Which ideal body weight formula is most accurate?

Accepted Answer

The Devine formula (1974) is most widely used clinically. Robinson (1983) is considered more accurate for women. Hamwi is quick for clinical settings. None is perfect — they are estimates and should be combined with BMI and body composition for a complete picture.

Question 3

Is ideal body weight the same as healthy weight?

Accepted Answer

Not exactly. Ideal body weight formulas give a single number based on height, while healthy weight is a range (BMI 18.5–24.9). Athletes with high muscle mass may exceed IBW but still be very healthy. Consider body fat percentage alongside IBW for a complete assessment.

Ideal Body Weight Calculator

FAQs — Ideal Body Weight