Ideal Weight Calculator

Estimate your ideal weight range using multiple scientific formulas. Results are based on height and gender.

⚕️ Health Disclaimer: Ideal weight is a general guideline. Healthy weight varies by individual factors including muscle mass, bone structure, and body composition.

Ideal Weight Range

—

How to use the Ideal Weight Calculator

Select your gender.
Enter your height in cm.
Click Calculate to see ideal weight from four medical formulas.
Use the range of results, not a single number, as your guide.

Formula used

Devine: Men 50 kg + 2.3 kg per inch over 5 ft; Women 45.5 kg + 2.3 kg per inch over 5 ft

The Robinson, Miller and Hamwi formulas use the same structure with slightly different constants, which is why they give a range.

Worked example

Height 175 cm (about 5 ft 8.9 in)

Man: Devine 70.5 kg, Robinson 68.9 kg, Miller 68.7 kg, Hamwi 72.0 kg

Woman at 162 cm: Devine 54.2 kg, Robinson 56.2 kg, Miller 58.2 kg, Hamwi 53.8 kg

Healthy BMI range at 175 cm (18.5–24.9): about 56.7–76.3 kg

Why there is no single perfect weight

These formulas were originally created to calculate medication doses, not to define how anyone should look. Frame size, muscle mass and age all change what is healthy for you. A better approach is to stay within a healthy BMI range, keep waist circumference below half your height, and focus on strength and fitness.

Tips for accurate results

Use the result as a range of a few kilograms, not a strict target.
People with a lot of muscle may be healthy above these numbers.
Check your BMI and body fat percentage too for a fuller picture.

Frequently Asked Questions

None is perfect. Devine is the most widely used in medicine; the average of all four is a sensible estimate.

They are least reliable below 5 ft and above 6 ft 4 in. Use the BMI range instead.

If your BMI is already healthy, there may be no need. Talk to a doctor before major changes.

Content reviewed by Vinod, Easy Smart Calculator · Last updated October 2026

Ideal Weight Formulas

Robinson (1983): Male: 52 + 1.9(inches-60), Female: 49 + 1.7(inches-60)
Miller (1983): Male: 56.2 + 1.41(inches-60), Female: 53.1 + 1.36(inches-60)
Devine (1974): Male: 50 + 2.3(inches-60), Female: 45.5 + 2.3(inches-60)
Hamwi (1964): Male: 48 + 2.7(inches-60), Female: 45.5 + 2.2(inches-60)