IBW formulas + BMI range

Ideal Weight for 173cm (5'8")

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.

55.4 kg

Min healthy weight

68.4 kg

Ideal weight (men)

63.6 kg

Ideal weight (women)

74.5 kg

Max healthy weight

Ideal Weight Results

👨 Men
👩 Women

68.4

kilograms

Ideal weight for men at 173cm (average of 4 formulas)

55.4 kg

Min healthy

68.4 kg

Ideal weight

74.5 kg

Max healthy

UnderweightNormalOverweightObese

Ideal weight 68.4 kg falls within the healthy BMI range

👨 Men

68.4 kg

55.4–74.5 kg

150.8 lbs

👩 Women

63.6 kg

55.4–74.5 kg

140.2 lbs

Ideal weight for a 173 cm woman

Healthy range 55.4–74.5 kg (122.1–164.3 lb); the four-formula average is 63.6 kg (140.2 lb).

Ideal weight for a 173 cm man

Healthy range 55.4–74.5 kg (122.1–164.3 lb); the four-formula average is 68.4 kg (150.8 lb).

In feet and inches, 173 cm is about 5'8". See ideal weight for 5'8" in pounds.

Reference Weight by 4 Common IBW Formulas

FormulaYearMen (kg)Women (kg)

Devine

Developed for drug-dosing calculations

197468.764.2

Robinson

Regression-based

198367.462.8

Miller

Regression on updated insurance tables

198367.664.1

Hamwi

Quick estimation rule (1964)

196469.963.3
Recommended Average—68.463.6

BMI Categories for 173cm Height

These weights are calculated specifically for someone 173cm tall

🔵 Underweight

BMI < 18.5

Under 55.4 kg

🟢 Healthy

BMI 18.5 — 24.9

55.4 — 74.5 kg

🟠 Overweight

BMI 25 — 29.9

74.6 — 89.5 kg

🔴 Obese

BMI ≥ 30

Over 89.5 kg

How to Calculate Ideal Weight for 173cm

1

Convert height to inches

173 cm ÷ 2.54 = 68.1 inches (5'8")
2

Inches above 5 feet (60 in)

68.1 − 60 = 8.1 inches above 5ft
3

Apply Devine formula (most used)

Men: 50 + (2.3 × 8.1) = 68.7 kgWomen: 45.5 + (2.3 × 8.1) = 64.2 kg
4

Verify with BMI

BMI = 68.7 ÷ (1.73)² = 22.9 ✅ Within healthy range

About 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 173 cm the four formulas give men about 4.8 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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Frequently Asked Questions

What is the ideal weight for 173cm?↓
The ideal weight for 173cm (5'8") ranges from 55.4 to 74.5 kg for men, and 55.4 to 74.5 kg for women. This range is based on a healthy BMI of 18.5–24.9 per WHO classification guidelines.
What is the ideal weight for a woman at 173cm?↓
For a woman at 173cm, the ideal weight ranges from 55.4 to 74.5 kg. The average of 4 common formulas (Devine, Robinson, Miller, Hamwi) is 63.6 kg. Individual results may vary based on muscle mass and body frame.
Is 78 kg a healthy weight for 173cm?↓
A weight of 78 kg at 173cm gives a BMI of approximately 25.9, which falls in the overweight range (25–29.9). Working toward the healthy range (55.4–74.5 kg) through balanced nutrition and exercise is recommended.
How do I calculate BMI for 173cm height?↓
BMI = weight (kg) ÷ height (m)². For 173cm (1.73m): BMI = your weight ÷ 2.9929. Example: if you weigh 68.4 kg, your BMI = 22.9 — within the healthy range (18.5–24.9).
What is the difference between Devine, Robinson, Miller and Hamwi formulas for 173cm?↓
For men at 173cm: Devine = 68.7 kg, Robinson = 67.4 kg, Miller = 67.6 kg, Hamwi = 69.9 kg. For women: Devine = 64.2 kg, Robinson = 62.8 kg, Miller = 64.1 kg, Hamwi = 63.3 kg. Using the average of all four gives the most balanced estimate.
How do I reach my ideal weight at 173cm?↓
To reach the ideal weight (68.4 kg for men, 63.6 kg for women) at 173cm: calculate your daily calorie needs using a TDEE calculator, then create a deficit of no more than 500 calories/day to safely lose 0.5 kg per week. Incorporate strength training 3×/week to preserve muscle mass.

BMI at 173 cm by weight

Weight (kg)BMICategory
4515Underweight
5016.7Underweight
5518.4Underweight
6020Healthy
6521.7Healthy
7023.4Healthy
7525.1Overweight
8026.7Overweight
8528.4Overweight
9030.1Obesity class 1
9531.7Obesity class 1
10033.4Obesity class 1
10535.1Obesity class 2
11036.8Obesity class 2
11538.4Obesity class 2
12040.1Obesity class 3

Standard adult BMI cut-offs (18+). They do not apply to children and teenagers.

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📚 Scientific References

  1. [1]Hamwi GJ. Therapy: changing dietary concepts. American Diabetes Association. 1964.
  2. [2]Devine BJ. Gentamicin therapy. Drug Intelligence & Clinical Pharmacy. 1974;8:650–5.
  3. [3]Robinson JD et al. Determination of ideal body weight for drug dosage calculations. Am J Hosp Pharm. 1983;40:1016–9.
  4. [4]Miller DR et al. Determining ideal body weight (and mass). Am J Hosp Pharm. 1983;40:1622–5.
  5. [5]WHO BMI Classification — Global Nutrition Monitoring Framework.
  6. [6]NHLBI. Aim for a Healthy Weight. National Heart, Lung, and Blood Institute.
  7. [7]Pai MP, Paloucek FP. The origin of the 'ideal' body weight equations. Ann Pharmacother. 2000;34(9):1066–9.
  8. [8]Peterson CM et al. Universal equation for estimating ideal body weight. Am J Clin Nutr. 2016;103(5):1197–203.

⚕️ Medical Disclaimer

These figures are educational estimates based on common ideal body weight formulas and the adult BMI range. They are not a substitute for personal medical assessment. Healthy weight is influenced by individual factors including muscle mass, bone density, age, and health status. Consult your physician or registered dietitian for a personalized evaluation.