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Ideal Weight Calculator — Find Your Healthy Weight Range

Ideal Weight Calculator — Find Your Healthy Weight | Free Online Tool
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Ideal Weight Calculator

Find Your Healthy Weight Range · Free Instant Results

👁 4 views 📂 Fitness Calculators ⭐ Featured

📖 About This Calculator

The Ideal Weight Calculator is a free online tool that helps you find your ideal body weight based on your height, gender, and age. Unlike BMI which only tells you if your current weight is healthy, this calculator gives you a specific target weight range to aim for.

This calculator uses four scientifically proven formulas — Robinson, Miller, Devine, and Hamwi — to calculate your ideal weight from multiple perspectives and gives you a combined healthy range. It supports both Metric units (centimeters) and Imperial units (feet and inches), making it suitable for users worldwide.

Whether you are starting a weight loss journey, setting a fitness goal, or simply want to know your ideal healthy weight, this calculator gives you fast, accurate, and easy-to-understand results in seconds — no sign-up or download required.

🚀 How to Use

1 Select your preferred unit system — Metric (cm) or Imperial (ft/in).
2 Enter your Age in years.
3 Select your Gender — Male or Female.
4 Enter your Height in centimeters, or feet and inches.
5 Click Calculate Ideal Weight.
6 Your ideal weight range, all four formula results, and healthy BMI weight range will appear instantly.
7 Tip: Click Reset to clear all fields and start a new calculation.

❓ Frequently Asked Questions

Ideal body weight is an estimated weight range considered healthy and optimal for a person based on their height and gender. It is calculated using scientific formulas developed by medical researchers. This calculator uses four of the most widely accepted formulas — Robinson (1983), Miller (1983), Devine (1974), and Hamwi (1964) — and shows you the full range across all four results so you have a realistic and balanced target.
No single formula is universally perfect for every person. The Devine formula is the most widely used in clinical settings, especially for medication dosing. The Robinson formula is considered the most accurate for general population use. The Miller formula tends to give slightly lower estimates, while the Hamwi formula is commonly used by dietitians. Using the range across all four formulas — as this calculator does — gives you the most balanced and realistic target.
Not exactly. Ideal weight formulas are based purely on height and gender, while BMI healthy weight is based on height and weight ratio. Both give useful targets, but they may differ slightly. This calculator shows you both — the ideal weight range from the four formulas and the healthy BMI weight range — so you can see the full picture and choose the most suitable target for your body.
The classic ideal weight formulas do not directly factor in age. However, body composition naturally changes with age — older adults tend to have more body fat and less muscle mass at the same weight. For most adults between 18 and 65, the ideal weight formulas provide reliable estimates. Children, teenagers, pregnant women, and elderly individuals should consult a healthcare professional for personalized weight goals.
If your current weight is above your ideal weight range, it does not mean you are unhealthy. Ideal weight is a general guideline, not a strict medical target. Factors like muscle mass, bone density, and body frame size are not captured by these formulas. A person with high muscle mass may weigh more than the ideal range but still be very healthy. Always consult a registered dietitian or doctor before starting any weight loss program.

⚠️ Disclaimer

This Ideal Weight Calculator is provided for general informational and educational purposes only. The results generated by this tool are based on standard scientific formulas and are intended as general reference estimates — not as medical or nutritional advice.

Ideal body weight formulas do not account for individual factors such as muscle mass, bone density, body frame size, ethnicity, fitness level, or medical conditions. Results may not be appropriate for children, teenagers, pregnant or breastfeeding women, elderly individuals, or athletes.

If you have concerns about your weight or health, please consult a qualified healthcare professional, registered dietitian, or your doctor before making any changes to your diet or exercise routine based on these results.

We are not responsible for any health decisions or consequences taken based on the results provided by this calculator. Use this tool as a general starting reference only — not as a substitute for professional medical evaluation.