Healthy Weight Range Calculator
Find your healthy weight range based on height using BMI 18.5-24.9, with adjustments for frame size and body composition to provide a personalized healthy weight target.
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Frame size adjusts the BMI range Multiple formulas provide a consensus Individual variation is normal
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Why: Knowing your healthy weight range helps set realistic goals and supports overall health. BMI-based ranges are widely used in clinical practice.
How: We use BMI 18.5–24.9, adjusted for frame size, plus Devine, Robinson, and Hamwi formulas. The consensus is an average of all methods.
Run the calculator when you are ready.
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Your Measurements
📊 Weight by Method
Comparison of all formula estimates and consensus.
📈 Healthy Weight by Height
Devine formula and BMI 18.5/24.9 ranges across heights.
🍩 Method Contribution
Relative weight of each estimate in the consensus.
📊 Frame Size Impact
Weight range by frame size for your height.
For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
🏥 Health Facts
BMI 18.5–24.9 is the WHO healthy range
— WHO
Frame size adjusts range by ±5%
— Met Life
A healthy weight corresponds to BMI 18.5–24.9 per WHO guidelines. Your exact range depends on height, frame size, and gender. We combine BMI-based ranges with Devine, Robinson, and Hamwi formulas for a consensus estimate. Frame size adjusts the range: small frame leans lower, large frame higher. Metropolitan Life tables historically used frame-based ideal weights.
Sources: WHO, NIH, CDC, Metropolitan Life.
Key Takeaways
- • Healthy BMI range is 18.5–24.9 per WHO guidelines.
- • Frame size adjusts the range: small frame leans lower, large frame higher.
- • Multiple formulas (Devine, Robinson, Hamwi) provide a consensus estimate.
- • Metropolitan Life tables historically used frame-based ideal weights.
Did You Know?
How Does Healthy Weight Work?
BMI-Based Range
Weight = BMI × height² (m). We apply frame adjustment: small 0.95×, medium 1×, large 1.05× to the BMI bounds 18.5 and 24.9.
Devine, Robinson, Hamwi
Classic ideal weight formulas based on inches over 5 feet. Male: Devine 50 + 2.3×; Robinson 52 + 1.9×; Hamwi 48 + 2.7×. Female: different base and coefficients.
Consensus
We average the BMI low, BMI high, Robinson, Devine, and Hamwi estimates to give a single recommended target weight.
Expert Tips
BMI Category Comparison
| BMI | Category |
|---|---|
| <18.5 | Underweight |
| 18.5–24.9 | Healthy |
| 25–29.9 | Overweight |
| ≥30 | Obese |
Frequently Asked Questions
What is a healthy weight range?
A healthy weight corresponds to BMI 18.5–24.9 per WHO guidelines. Your exact range depends on height, frame size, and gender. We combine BMI-based ranges with Devine, Robinson, and Hamwi formulas for a consensus estimate.
What does the BMI 18.5–24.9 range mean?
BMI 18.5–24.9 is the WHO-defined "normal" or healthy range. Below 18.5 is underweight; 25–29.9 is overweight; 30+ is obese. This range correlates with lower risk of weight-related diseases.
How does frame size affect healthy weight?
Small frame individuals may aim for the lower end of the range; large frame for the higher end. We apply a ±5% adjustment: small frame uses 0.95× BMI multiplier, large frame uses 1.05×.
Do age adjustments matter for healthy weight?
Some guidelines suggest slightly higher BMI targets for older adults (e.g., 22–27 for ages 65+). This calculator uses the standard 18.5–24.9 range; consult your provider for age-specific guidance.
Is weight the best measure of health?
Weight and BMI are screening tools, not definitive health markers. Body composition, muscle mass, waist circumference, and metabolic markers matter. Athletes may have higher BMI despite being healthy.
How should I set a healthy weight goal?
Use the consensus estimate (average of all methods) as a target. Aim for gradual changes (0.5–1 kg/week). Focus on sustainable habits rather than rapid loss. Consult a healthcare provider for personalized plans.
Key Statistics
Official Data Sources
⚠️ Disclaimer: This calculator is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalized guidance on weight and health goals.
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