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Ideal Body Weight Calculator (2025)
Calculate your ideal body weight using multiple medical formulas (Devine, Hamwi, Robinson) and compare them to your current weight.
E.g., 5'10" = 70 inches
Ideal Body Weight
161.2 lbs
Recommended Ideal Weight
161.0 lbs
Devine Formula
166.0 lbs
Hamwi Formula
156.6 lbs
Robinson Formula
+23.8 lbs
Difference from Ideal
You're 23.8 lbs above ideal weight. Focus on gradual fat loss while preserving muscle.
Analysis & insights
Across the four standard formulas, your ideal weight averages 161.17333333333335 lbs (Devine 160.965, Hamwi 166, Robinson 156.555). That's 23.826666666666654 lbs above your current weight. These formulas give a starting point but don't account for muscle, frame size, or body composition — combine with BMI, waist circumference, and overall health markers for the complete picture.
Modest gap from ideal
23.826666666666654 lbs above ideal. Achievable through ~6-12 months of moderate habit changes.
Risk & benchmark gauge
Current band
Modest gap
+23.826666666666654 lbs from ideal
Industry benchmarks
- Average of formulas161.17333333333335 lbs
- Devine (medical)160.965 lbs
- Hamwi (1964)166 lbs
- Robinson (1983)156.555 lbs
- Gap from current+23.826666666666654 lbs
Key insights
"Ideal" formulas are guidelines
Devine, Hamwi, Robinson, and Miller formulas were developed for medical drug-dosing in the 1960s-80s. They give a reasonable target range but don't account for muscle mass, frame size, or ethnicity.
BMI is often a better screen
For most adults, "healthy weight" = BMI 18.5-24.9. The ideal-weight formulas give a single number; BMI gives a range. Both have limits for muscular or larger-framed people.
Body composition trumps the scale
A 175-lb person at 12% BF is healthier than a 165-lb person at 28% BF — even though the lighter person is closer to "ideal" weight. Track waist circumference and lean mass alongside scale weight.
Recommended actions(2)
Resistance train 2-3x per week
Medium priorityLifting preserves (during loss) or builds (during gain) muscle mass — the metabolically active tissue that keeps your maintenance calorie needs high.
Hit 0.7-1g protein per lb bodyweight
Medium priorityCritical for muscle preservation during weight loss and muscle gain during a surplus.
Related Calculators
This tool is for informational purposes only and does not constitute medical advice. Consult a healthcare professional for advice specific to your situation.