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Originally developed for drug dosing, the Devine formula estimates ideal body weight based on height and sex. Widely used in clinical settings.
Men: IBW(kg) = 50 + 2.3 × (height(in) − 60) | Women: IBW(kg) = 45.5 + 2.3 × (height(in) − 60)A healthy range typically spans ±10% of ideal body weight, corresponding roughly to BMI 18.5–24.9 for most heights.
Healthy Range = IBW × 0.90 to IBW × 1.10The Ideal Weight Calculator applies the canonical formula for this domain using validated reference equations. Inputs are type-checked and unit-normalized before evaluation.
Result = f(input₁, input₂, …)Updated: July 2026
A man at 175cm (5'9") checking ideal weight range for fitness goal setting.
→ Ideal weight: ~70 kg, healthy range: 63–77 kg
A woman planning a healthy return to pre-pregnancy weight after delivery.
→ Ideal weight: ~54 kg, healthy range: 49–59 kg
A professional uses the Ideal Weight Calculator during client work to produce accurate numbers quickly without opening a spreadsheet.
Ideal weight formulas don't account for muscle mass, bone density, or body composition. Athletes may weigh 10–20% above IBW and be perfectly healthy.
Devine, Robinson, and Miller formulas give different results. Frame size, ethnicity, and age affect healthy weight. Use IBW as a reference, not a prescription.
Use our free Ideal Weight Calculator for fast, accurate results in your browser. No signup or installation required — works on any device.