Calculate your ideal body weight using four widely used medical formulas ā Devine, Robinson, Miller, and Hamwi. Get a comprehensive comparison based on your height, gender, and see how different formulas estimate your healthy target weight.
| Formula | Ideal Weight (kg) | Ideal Weight (lbs) | Year |
|---|---|---|---|
| Devine | - | - | 1974 |
| Robinson | - | - | 1983 |
| Miller | - | - | 1983 |
| Hamwi | - | - | 1964 |
Based on your height, a healthy weight range (BMI 18.5ā24.9) is:
-
Your ideal weight may vary. Consult your healthcare provider for personalized advice.
There are several well-known formulas used by healthcare professionals to estimate ideal body weight (IBW). Each formula was developed at different times using different populations, which is why the results can vary. Here's an overview of each method.
Men: 50 kg + 2.3 kg Ć (height over 5 ft in inches)
Women: 45.5 kg + 2.3 kg Ć (height over 5 ft in inches)
Originally developed for calculating medication dosages. The most widely referenced IBW formula in medical literature.
Men: 52 kg + 1.9 kg Ć (height over 5 ft in inches)
Women: 49 kg + 1.7 kg Ć (height over 5 ft in inches)
Revised to better reflect actual population weights. Uses different coefficients for men and women for more gender-specific estimates.
Men: 56.2 kg + 1.41 kg Ć (height over 5 ft in inches)
Women: 53.1 kg + 1.36 kg Ć (height over 5 ft in inches)
Developed using data from life insurance mortality studies. Produces higher estimates for shorter individuals and lower for taller ones.
Men: 48 kg + 2.7 kg Ć (height over 5 ft in inches)
Women: 45.5 kg + 2.2 kg Ć (height over 5 ft in inches)
One of the earliest IBW formulas. Uses a steeper slope for height adjustment, making it more sensitive to height differences.
Each formula calculates ideal body weight based on height, with separate equations for men and women. Below are the exact formulas used in this calculator.
Your ideal weight is a target range, not a fixed number. Here are practical tips to help you reach and maintain a healthy weight.
Focus on whole foods: lean proteins, complex carbohydrates, healthy fats, and fiber-rich vegetables. Avoid crash diets ā sustainable changes yield lasting results.
Aim for at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity per week. Combine with strength training 2ā3 times weekly.
Drink water throughout the day. Sometimes thirst is mistaken for hunger. Aim for 8ā10 cups daily, more if you're active or in hot climates.
Poor sleep disrupts hunger hormones (ghrelin and leptin). Aim for 7ā9 hours of quality sleep per night to support weight management.
Monitor your weight weekly rather than daily to see trends. Use our Ideal Weight Calculator regularly to track progress toward your goal range.
Work with healthcare providers, dietitians, or personal trainers for personalized guidance tailored to your health status and goals.
Remember: Ideal weight formulas provide estimates based on population averages. Your healthy weight may differ based on muscle mass, bone density, body composition, and individual health conditions. Focus on overall wellness rather than a specific number on the scale.
Explore more body composition and weight assessment tools to get a complete picture of your health.
Ideal body weight (IBW) is an estimate of the optimal weight range for an individual based on their height and gender. It has been used for decades in medical settings to help determine medication dosages, assess nutritional status, and guide weight management goals. While no single number can represent the perfect weight for everyone, IBW formulas provide a useful reference point.
The most widely used IBW formulas were derived from large population studies and life insurance data from the mid-20th century. These studies examined the relationship between height, weight, and longevity to determine which weight ranges were associated with the lowest mortality rates. The four formulas used in this calculator represent different approaches developed by different researchers.
It's important to understand that IBW formulas have limitations:
Your ideal weight calculator results provide a helpful starting point for understanding your weight goals. Compare the range across all four formulas ā if they agree closely, that gives you a confident target range. If they vary significantly (which can happen at very tall or short heights), use the average as a general guideline and consult with your healthcare provider.
Keeping your weight within a healthy range offers numerous health benefits that extend far beyond appearance.
Reduces risk of heart disease, high blood pressure, and stroke. Healthy weight helps maintain normal cholesterol and triglyceride levels.
Significantly lowers risk of type 2 diabetes by improving insulin sensitivity and glucose metabolism.
Less stress on weight-bearing joints (knees, hips, ankles) reduces arthritis risk and joint pain.
Reduces risk of sleep apnea and improves sleep quality. Healthy weight supports proper respiratory function during sleep.
Positive body image, increased energy, and reduced risk of depression ā all linked to healthy weight management.
Optimal weight supports better metabolism, higher energy levels, and improved physical performance in daily activities.
Explore our other health and fitness calculators to round out your wellness assessment.
Our Ideal Weight Calculator provides estimates based on four established medical formulas: Devine, Robinson, Miller, and Hamwi. These calculations are for informational and educational purposes only and are not a substitute for professional medical advice.
Compare all four major IBW formulas side by side in one convenient tool ā no other calculator offers this complete comparison.
Uses the exact published formulas from the original medical literature, ensuring clinical-grade accuracy in every calculation.
Each tab provides detailed information about methods, formulas, and practical tips to help you understand your results.
All calculations are performed locally in your browser. No personal health data is stored, transmitted, or shared.
Fully responsive design works seamlessly on smartphones, tablets, and desktop computers.
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Medical Disclaimer: This Ideal Weight Calculator is for informational and educational purposes only. The results are estimates based on population averages and should not replace professional medical advice. Ideal body weight is just one indicator of health and does not account for individual factors such as muscle mass, bone density, body composition, or medical conditions. Always consult a qualified healthcare provider before starting any weight management program or making significant changes to your diet or exercise routine.