Free Ideal Weight Calculator Online
This free ideal weight calculator estimates your healthy body weight based on height and gender using four proven medical formulas — use it online to find your personal target weight range instantly.
Ideal Weight Range
Enter your height above
How the Ideal Weight Calculator Works
This free online ideal weight calculator applies four well-established formulas — Devine, Robinson, Miller, and Hamwi — to estimate your healthy body weight. Each formula uses your height and gender as primary inputs, producing slightly different results based on the clinical data behind them.
For a male at 178 cm (5'10"), the Devine formula gives approximately 73 kg (161 lbs), while the Miller formula suggests around 66 kg (145 lbs). The range between these formulas represents a realistic healthy weight window for that height.
Your ideal weight is a guideline, not an absolute target. Body composition, muscle mass, and individual health factors all influence what weight is genuinely healthy for you. Use this free tool as a starting reference point.
Understanding the Four Formulas
The Devine formula (1974) is the most widely used in clinical settings and provides a moderate estimate. The Robinson formula (1983) was developed as a refinement and tends to be slightly lower for taller individuals.
The Miller formula (1983) gives the most conservative results — often 3-5 kg below Devine. The Hamwi formula (1964) is the oldest and often produces the highest estimates, particularly for taller people.
When using the ideal weight calculator, look at the average across all four formulas for the most balanced estimate of your target body weight.
Tips for Reaching Your Ideal Weight
A calorie deficit of 500 cal/day produces roughly 0.5 kg (1 lb) of weight loss per week — sustainable and healthy.
Strength training preserves muscle during weight loss, so your final weight reflects more lean mass and less fat.
Track your progress weekly, not daily. Daily weight fluctuates 1-2 kg from water, sodium, and food volume alone.
Recalculate your ideal weight range after significant height changes (adolescents) or major body composition shifts.
Frequently Asked Questions
Disclaimer: This free online ideal weight calculator provides general estimates for informational purposes only. Individual healthy weight varies based on body composition, muscle mass, bone density, and medical conditions. Consult a qualified healthcare provider before making dietary or lifestyle changes based on these results. This free tool does not replace professional medical guidance.
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