Ideal Weight Calculator
Find your ideal body weight using four established formulas
Your Details
Formulas Used
- Robinson (1983) — 52 kg + 1.9 kg/inch (♂) · 49 + 1.7 (♀)
- Miller (1983) — 56.2 kg + 1.41 kg/inch (♂) · 53.1 + 1.36 (♀)
- Devine (1974) — 50 kg + 2.3 kg/inch (♂) · 45.5 + 2.3 (♀)
- Hamwi (1964) — 48 kg + 2.7 kg/inch (♂) · 45.4 + 2.27 (♀)
- All per inch over 5 feet (60 inches)
Ideal Weight Results
Enter your height and gender to see results
What is the Ideal Weight Calculator?
The ideal weight calculator estimates a healthy weight range for your height and gender. It is not trying to tell you what you should weigh for looks; it's based on formulas developed by medical researchers to estimate the weight at which most people perform well medically. Doctors, dietitians, and people setting realistic fitness goals use it. CalciHub's version runs 4 well-known formulas at once and shows you the range so you can see where the science actually lands for your body.
How does a metric work?
CalciHub calculates ideal weight at the same time using four well-established medical formulas.
Robinson Formula: (Male) 52 kg + 1.9 kg for every inch over 5 feet; (Female) 49 kg + 1.7 kg for every inch over 5 feet Miller Formula: 56.2 kg + 1.41 kg/inch over 5' (male); 53.1 kg + 1.36 kg/inch over 5' (female) Devine Formula Men: 50 kg + 2.3 kg per inch over 5 feet Women: 45.5 kg + 2.3 kg per inch over 5 feet Hamwi Formula: 48 kg + 2.7 kg per inch over 5 feet (men) 45.4 kg + 2.26 kg per inch over 5 feet (women)
Height = your height in feet and inches; gender = affects base weight in each formula
How to Use CalciHub's Ideal Weight Calculator
1. Choose your unit system: select Metric or Imperial.
2. Select your gender. Choose Male or Female.
2. Enter your height in feet and inches (or centimetres).
3. Click “Calculate”
4. Review the results from all four formulas and the average range.
5. Compare your current weight to the suggested range.
Tip: The range across 4 formulas is more useful than any single number. If your current weight falls within that range, you're likely in good shape regardless of which formula you trust most.
How It Works with a Real Example
David is 5'11" and wants to know what a healthy weight looks like for him. He enters his details into CalciHub's ideal weight calculator.
Gender: Male | Height: 5'11"
Results: Robinson: 74.3 kg (163.8 lbs) Miller: 75.6 kg (166.7 lbs) Devine: 80 kg (176.4 lbs) Hamwi: 79.4 kg (175.1 lbs) Average range: roughly 165–177 lbs
David currently weighs 182 lbs. He's just a little bit out of range, but not by much. He uses the result to set a realistic target weight rather than a vague "I want to lose weight" goal.
Frequently Asked Questions
There is no one “best” formula; each was designed for a different population or purpose. The Devine formula is the most commonly used in clinical settings, but looking at the range across all four gives a more balanced picture than relying on any one calculation.