About Ideal Body Weight

What does ideal body weight mean?

Ideal body weight (IBW) refers to how much a person should weigh according to his or her age, gender, height and other factors. There are various formulas to determine the ideal body weight of a person, such as the Robinson formula, Miller formula, Devine formula and Hamwi formula. IBW only gives an estimate and may not be strictly applicable universally.

While calculating IBW, factors such as body fat or muscle mass aren't taken into consideration. Therefore, it is not a perfect measure of the health of a person. Conditions such as obesity, malnutrition and heart diseases, among others, can lead to health complexities. Maintaining an ideal body weight can help people avoid such complexities and ensure better health.

What should be my ideal body weight?

Generally, IBW isn't a definitive factor to determine a person's health. BMI or body mass index is a more precise factor that is used medically for diagnosing health-related conditions. Originally, ideal body weight was used by doctors to determine medication dosages appropriate for a person. However, IBW can be used to maintain proper body weight and avoid weight-related medical issues.

The formulas used in this calculator:

• Robinson Formula
  For males: 52 kg + 1.9 kg per inch over 5 feet
  For females: 49 kg + 1.7 kg per inch over 5 feet

• Miller Formula
  For males: 56.2 kg + 1.41 kg per inch over 5 feet
  For females: 53.1 kg + 1.36 kg per inch over 5 feet

• Devine Formula
  For males: 50.0 kg + 2.3 kg per inch over 5 feet
  For females: 45.5 kg + 2.3 kg per inch over 5 feet

• Hamwi Formula
  For males: 48.0 kg + 2.7 kg per inch over 5 feet
  For females: 45.5 kg + 2.2 kg per inch over 5 feet

BMI Range: For adults over the age of 18, the recommended healthy BMI range is 18.5 - 25

Here, BMI = weight/height²

While BMI is a more precise factor used for medical purposes to determine a person's health, the Devine formula is the most widely used one to determine the ideal body weight of a person.

Ideal Weight Calculator - Find Your Perfect Weight Range (kg & lbs)

Discover your optimal weight with our free Ideal Weight Calculator! This smart tool calculates your healthy weight range using four proven medical formulas (Robinson, Miller, Devine, and Hamwi) based on your height, age, and gender.

Key Features:

✔ Multiple Formula Results – Compare different calculation methods
✔ BMI Range Included – See if your weight falls within the healthy 18.5–24.9 BMI range
✔ Simple & Accurate – Just enter your details for instant results
✔ Clean, User-Friendly Design – Works perfectly on all devices

Why Use Our Calculator?

• Health Awareness – Understand your ideal weight to maintain better health

• Goal Tracking – Useful for fitness journeys, diet plans, or weight management

• Medical Insight – Based on clinically recognized formulas

Try it now and take the first step toward a healthier you!