Healthy Body Weight Calculator
Find your healthy or ideal body weight from your height using the Hamwi formula and the BMI 18.5–25 range. Enter your height, age, and gender to see a target weight and a healthy weight range.
Formula
Hamwi (male): 48 + 2.7 × (height_inches − 60); BMI-25: 25 × height_m²
Example Calculation
Inputs
- Height: 175 cm
- Age: 30 years
Suppose you enter: Height = 175, Age = 30. The calculator applies the formula (Hamwi (male): 48 + 2.7 × (height_inches − 60); BMI-25: 25 × height_m²) and shows all output values below. Change any input field to immediately see how the result changes.
Frequently asked questions
What is a healthy body weight?
It is a weight range associated with good health for your height, commonly taken as a BMI of 18.5–25 or an ideal weight from the Hamwi formula.
How does the Hamwi formula work?
It starts from a base weight at 5 feet of height and adds a fixed amount per inch above that — more for men than women.
Why is there a range rather than one number?
Healthy weight depends on build, muscle, and frame size, so a BMI 18.5–25 range is more realistic than a single figure.
Does this account for muscle?
No. Very muscular people may exceed these targets while still being healthy, since muscle weighs more than fat.
Should I aim for the exact ideal weight?
Use it as a guide, not a strict goal. Anywhere in the healthy range is fine; focus on habits rather than a single number.