Ideal Weight for 171cm (5'7")
Reference weight estimated with four commonly used ideal body weight formulas: Devine, Robinson, Miller and Hamwi. The healthy range is derived separately from the standard adult BMI range.
54.1 kg
Min healthy weight
66.8 kg
Ideal weight (men)
62.1 kg
Ideal weight (women)
72.8 kg
Max healthy weight
Ideal Weight Results
66.8
kilograms
Ideal weight for men at 171cm (average of 4 formulas)
54.1 kg
Min healthy
66.8 kg
Ideal weight
72.8 kg
Max healthy
Ideal weight 66.8 kg falls within the healthy BMI range
👨 Men
66.8 kg
54.1–72.8 kg
147.2 lbs
👩 Women
62.1 kg
54.1–72.8 kg
136.9 lbs
Ideal weight for a 171 cm woman
Healthy range 54.1–72.8 kg (119.3–160.5 lb); the four-formula average is 62.1 kg (136.9 lb).
Ideal weight for a 171 cm man
Healthy range 54.1–72.8 kg (119.3–160.5 lb); the four-formula average is 66.8 kg (147.2 lb).
In feet and inches, 171 cm is about 5'7". See ideal weight for 5'7" in pounds.
Reference Weight by 4 Common IBW Formulas
| Formula | Year | Men (kg) | Women (kg) |
|---|---|---|---|
Devine Developed for drug-dosing calculations | 1974 | 66.8 | 62.3 |
Robinson Regression-based | 1983 | 65.9 | 61.4 |
Miller Regression on updated insurance tables | 1983 | 66.5 | 63.1 |
Hamwi Quick estimation rule (1964) | 1964 | 67.8 | 61.6 |
| Recommended Average | — | 66.8 | 62.1 |
BMI Categories for 171cm Height
These weights are calculated specifically for someone 171cm tall
🔵 Underweight
BMI < 18.5
Under 54.1 kg
🟢 Healthy
BMI 18.5 — 24.9
54.1 — 72.8 kg
🟠 Overweight
BMI 25 — 29.9
72.9 — 87.4 kg
🔴 Obese
BMI ≥ 30
Over 87.4 kg
How to Calculate Ideal Weight for 171cm
Convert height to inches
171 cm ÷ 2.54 = 67.3 inches (5'7")Inches above 5 feet (60 in)
67.3 − 60 = 7.3 inches above 5ftApply Devine formula (most used)
Men: 50 + (2.3 × 7.3) = 66.8 kgWomen: 45.5 + (2.3 × 7.3) = 62.3 kgVerify with BMI
BMI = 66.8 ÷ (1.71)² = 22.8 ✅ Within healthy rangeAbout the 4 Medical Formulas
Hamwi (1964)
The earliest formula, developed by Dr. G.J. Hamwi in 1964 for clinical nutrition. Published via the American Diabetes Association .
Devine (1974)
Developed by Dr. B.J. Devine in 1974 for drug dosage calculations. It later became a common reference-weight estimate.
Robinson (1983)
Developed by Dr. J.D. Robinson in 1983 using regression analysis of Metropolitan Life Insurance data. Gives values close to Devine.
Miller (1983)
Developed by Dr. D.R. Miller in 1983 using updated Metropolitan Life tables. Typically produces the highest values.
Why Does Ideal Weight Differ Between Men and Women?
At 171 cm the four formulas give men about 4.7 kg more than women, because each formula uses different constants for men and women, derived from historical height–weight data (on average men carry more lean and bone mass). The BMI-based healthy range is the same for both sexes at the same height.
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BMI at 171 cm by weight
| Weight (kg) | BMI | Category |
|---|---|---|
| 45 | 15.4 | Underweight |
| 50 | 17.1 | Underweight |
| 55 | 18.8 | Healthy |
| 60 | 20.5 | Healthy |
| 65 | 22.2 | Healthy |
| 70 | 23.9 | Healthy |
| 75 | 25.6 | Overweight |
| 80 | 27.4 | Overweight |
| 85 | 29.1 | Overweight |
| 90 | 30.8 | Obesity class 1 |
| 95 | 32.5 | Obesity class 1 |
| 100 | 34.2 | Obesity class 1 |
| 105 | 35.9 | Obesity class 2 |
| 110 | 37.6 | Obesity class 2 |
| 115 | 39.3 | Obesity class 2 |
| 120 | 41 | Obesity class 3 |
Standard adult BMI cut-offs (18+). They do not apply to children and teenagers.
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📚 Scientific References
- [1]Hamwi GJ. Therapy: changing dietary concepts. American Diabetes Association. 1964.
- [2]Devine BJ. Gentamicin therapy. Drug Intelligence & Clinical Pharmacy. 1974;8:650–5.
- [3]Robinson JD et al. Determination of ideal body weight for drug dosage calculations. Am J Hosp Pharm. 1983;40:1016–9.
- [4]Miller DR et al. Determining ideal body weight (and mass). Am J Hosp Pharm. 1983;40:1622–5.
- [5]WHO BMI Classification — Global Nutrition Monitoring Framework.
- [6]NHLBI. Aim for a Healthy Weight. National Heart, Lung, and Blood Institute.
- [7]Pai MP, Paloucek FP. The origin of the 'ideal' body weight equations. Ann Pharmacother. 2000;34(9):1066–9.
- [8]Peterson CM et al. Universal equation for estimating ideal body weight. Am J Clin Nutr. 2016;103(5):1197–203.