Ideal Body Weight Calculator

Weight Calculator: Calculate ideal body weight online for free












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Ideal Body Weight Calculator

Weight Calculator: Calculate ideal body weight online for free based on factors such as your age, gender and height. Ideal body weight (IBW) refers to how much a person should weigh according to his or her age, gender, height and other factors.

  • 1

    Know Your Ideal Body Weight

    Use this calculator to know how much your ideal body weight should be based on factors such as your age, gender and height.
  • 2

    Formula used in this calculation

    The formulas commonly used to determine how much a person should ideally weigh are:

    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

  • 3

    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.

  • 4

    How does this calculator work?

    Also known as an ideal weight calculator or IBW calculator, this digital tool takes inputs, such as a person’s age, gender and height, and displays the ideal body weight according to various commonly used formulas and indexes.

  • 5

    How to use this calculator?

    Also known as an ideal weight calculator or IBW calculator, this digital tool takes inputs, such as a person’s age, gender and height, and displays the ideal body weight according to various commonly used formulas and indexes.

    Here’s a step-by-step guide to using this weight calculator

    First click on gender male or female

    In the next field, enter the age of the person concerned. The calculator only accepts ages between 2 and 80

    Lastly, enter the height of the person in Centimeter

    After entering all the required input, click on “Calculate” to view the result

    Output Shown: The result section displays the person’s ideal body weight according to the Robinson, Miller, Devine and Hamwi formulas, and the healthy BMI range, respectively, based on the inputs provided.

Frequently Asked Questions (FAQ)

Here are some of the most recent questions asked by the users, which we decided to answer briefly.

  • 1

    What is a weight calculator?

    The weight calculator is an online tool used to find out how much a person should ideally weigh based on factors such as age, gender and height. People who want to regulate their body weight can use this calculator to get an estimate of their IBW and take the necessary corrective steps.
  • 2

    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.
  • 3

    Whats is the factor for calculation?

    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.
  • 4

    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.