Ideal Weight Range
Four classic formulas, one honest range.
Enter your sex and height and see how much five estimation methods — Devine, Robinson, Miller, Hamwi, and the CDC BMI window — disagree about your ideal weight. The honest answer is a range, never a target. For adults 18+.
How this is calculated
Methodology & sources
- Devine 1974: Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650–5 (print-only) — equation traced in Pai MP, Paloucek FP. The Origin of the "Ideal" Body Weight Equations. Ann Pharmacother. 2000;34:1066–9
- Robinson 1983: Robinson JD, et al. Determination of ideal body weight for drug dosage calculations. Am J Hosp Pharm. 1983;40:1016–9
- Miller 1983: Miller DR, et al. Determining ideal body weight (and mass). Am J Hosp Pharm. 1983;40:1622–5 — tabulated with full citation in Peterson CM, et al. Universal equation for estimating ideal body weight and body weight at any BMI. Am J Clin Nutr. 2016;103:1197–203
- Hamwi 1964: Hamwi GJ. Therapy: changing dietary concepts. In: Danowski TS, ed. Diabetes Mellitus: Diagnosis and Treatment. ADA; 1964:73–8 (book chapter, not online) — original lb form: men 106 lb + 6 lb per inch over 5 ft, women 100 lb + 5 lb/in; tabulated in Peterson CM, et al. Am J Clin Nutr. 2016;103:1197–203
- BMI window (CDC): Healthy weight 18.5–24.9 · weight window = BMI × height² — CDC adult BMI categories
Privacy — how your data is handled
All math runs in your browser on your device. Nothing you type is sent to a server,
and saved results live only in this browser's local storage. Tools that use live
public data (food databases, weather) request only what they need to display.
👟 Practical toolkit tip — Simple Pocket Pedometer or Wrist Step Counter
Why it helps: Tracking daily step volume (7,500–10,000 steps/day) prevents subconscious NEAT drop-off when you are in a calorie deficit.
Pro tip: A 15-minute brisk walk after dinner adds ~1,600 steps and blunts post-meal blood glucose spikes.