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Find your ideal body weight using the Devine, Robinson, Miller, and Hamwi formulas. Includes a healthy BMI weight range and comparison cards.
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Calculate your TDEE, BMR, and target calories for weight loss, maintenance, or muscle gain.
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Try tool →Calculate your body fat percentage using the US Navy circumference method.
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Try tool →Ideal body weight formulas provide an estimate of what a person at a given height might weigh at an optimal body composition. They are used in clinical settings for medication dosing, nutritional assessment, and as general health benchmarks.
Important: These formulas do not account for muscle mass, bone density, body fat distribution, or frame size. Use them as a general reference rather than a strict target.
The healthy BMI range (18.5-24.9) provides a broader, evidence-based healthy weight zone. Most ideal weight formulas fall within this range for average builds.
No single formula is universally "most accurate" since individual body composition varies widely. The Devine formula is most commonly used in clinical settings for medication dosing. The Miller formula was derived from larger actuarial datasets. Take the average across all four as a reasonable estimate for most people.
"Ideal weight" is a specific number from a formula, while "healthy weight" is the full BMI range (18.5-24.9) considered healthy for a given height. The healthy BMI range accounts for natural variation in body types and is generally preferred over formula-based ideal weights.
No. These formulas do not account for muscle mass. Athletes with high muscle mass may weigh more than these formulas suggest while having very low body fat. Body fat percentage is a better metric for athletes than weight-based formulas.
Yes, but use the healthy BMI range as your primary guide rather than a specific formula number. Aim to stay within the healthy range for your height, and focus on body composition rather than just the number on the scale.
Each formula was developed using different populations and methodologies. Devine used pharmaceutical data, Miller used life insurance records, Hamwi and Robinson used clinical data from different eras. The differences reflect varying assumptions about ideal body composition at the time each was created.