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Find the Right Weight to Stay Healthy
For accurate calculation, we need some basic info about you
Select your gender
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Enter your age
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Enter your height
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in
Enter your weight
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Activity Level
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Calculate IBW
Ideal Body Weight Calculator – Find Your Healthy Weight
Ideal Body Weight (IBW) is the weight that’s considered healthiest for a human body. It’s not just about how much you weigh on a scale, but IBW also considers factors such as your height, age, gender, and body frame to estimate a range where your body can stay fit and active. Knowing your IBW helps you understand if your current weight is in a healthy zone or if you need to make changes. Staying within this range can lower your chances of health problems like diabetes, high blood pressure, and heart disease.
Common formulas for IBW include the Devine, Hamwi, Robinson, and others, which typically use height as the primary variable. Our Ideal Body Weight Calculator helps you quickly determine your ideal weight based on your height, making it easier to understand whether you fall within a healthy weight range and what steps you can take to reach or maintain it.
Important to remember: IBW provides a healthy weight range, not a single "perfect" number. Everyone's body is different — genetics, muscle mass, bone density, and overall health all influence what's truly ideal for you. IBW is a general guideline and may not account for muscle mass or other individual factors.
How to Use the Ideal Weight Calculator
- Select your gender (male or female) to adjust for typical body composition.
- Enter your height — measure barefoot, standing straight against a wall; input height in feet/inches.
- Enter your age in years.
- Click Calculate to see your Ideal Body Weight (IBW).
- Compare results with BMI or waist-to-height ratio for a complete health check.
6 IBW Formulas Compared
| Formula | For Men | For Women | Best For | Accuracy |
|---|---|---|---|---|
| Peterson Universal (2016) | Wt = 5 × BMI + (BMI ÷ 5) × (Ht - 60") | Same | Any BMI goal | 0.5% error |
| Devine (1974) | 50 + 2.3(Ht - 60") | 45.5 + 2.3(Ht - 60") | Medical dosing | 2.1–3.1% error |
| Robinson (1983) | 52 + 1.9(Ht - 60") | 49 + 1.7(Ht - 60") | Clinical use | 0.4–0.7% error |
| Hamwi (1964) | 106 + 6(Ht - 60") | 100 + 5(Ht - 60") | Quick estimates | 2.6–3.9% error |
| Miller (1983) | 56.2 + 1.41(Ht - 60") | 53.1 + 1.36(Ht - 60") | Updated tables | 3.2–3.3% error |
| Broca (1871) | Height (cm) - 100 | Height (cm) - 100 | Historical reference | 2.7% error |
Gain Deeper Health Insights with Our Fitness Tools
In addition to our BMI calculator, FITPASS provides a comprehensive set of tools to obtain thorough understanding of your overall health and fitness. Easily calculate key metrics like calories burned during exercise, optimal daily calorie intake for your goals, and more.
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