BMI Calculator

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What is a BMI Calculator?

A BMI (Body Mass Index) Calculator is a simple and effective tool used to assess whether a person’s body weight is appropriate for their height. It provides a numerical value that helps determine if an individual falls into categories such as underweight, normal weight, overweight, or obese. This measurement gives a general indication of body fat and helps identify potential health risks linked to being under or over the ideal weight range. To get a perfect analysis of your BMI consider visiting a general doctor in Coimbatore.

What should you know about BMI categories and ranges?

When your BMI is calculated, the number can be interpreted into specific categories to determine if you are within a healthy or unhealthy weight range. The number simply shows the category you fall into as defined by the World Health Organization (WHO) as associated with the categories used to describe BMI data to assess health risk associated with body weight.

Underweight (BMI below 18.5):

When someone's weight is considered too low for height. This could lead to nutrition deficits, low immune response, and other health issues. You can always consult a dietitian in Coimbatore to seek expert nutrition advice

Normal weight (BMI 18.5-24.9) :

Generally thought to be in a healthier or moderate range. Generally, normal weight is associated with less likelihood of health conditions associated with weight.

Overweight (BMI 25-29.9) :

Without serious weight issues a weight above the normal range, which indicates you may have conditions associated with weight distribution problems, which are more serious like high blood pressure, diabetes, and heart disease.

Obesity :

Has its own sub-divisions by degree of severity.

  • Class 1 (BMI 30-34.9): mild obesity, leads to increased chances of getting more health conditions.
  • Class 2 (BMI 35-39.9): moderate obesity, which increases the odds of getting other serious health conditions.
  • Class 3 (BMI above 40) : severe obesity, also referred to as "morbid obesity", and in general it comes with the highest risk of serious health conditions

BMI Calculator

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BMI chart for adults

What should you know about the BMI chart for adults?

A BMI chart helps adults quickly see which weight category they fall into based on their height and weight. It provides a visual guide to understand whether you are underweight, within the healthy range, overweight, or obese. While the BMI ranges are the same for both men and women, body composition (like muscle mass and fat distribution) can differ, which may slightly influence how BMI is interpreted.

Men

For adult men, BMI is a useful indicator of weight-related health risks. However, those with high muscle mass (such as athletes) may have a higher BMI even if their body fat is low.

Women

For adult women, BMI is equally effective in indicating healthy weight ranges, though factors like pregnancy, hormonal changes, and fat distribution can play a role in interpretation.

What is the BMI for Children and Teenagers?

BMI is measured differently for children and teenagers compared to adults. Instead of fixed ranges, BMI is compared to gender- and age-specific growth charts, resulting in a percentile. This method accounts for natural growth and development during childhood and adolescence.

The BMI value ranges for children and teenagers include:

In children and teenagers, BMI is interpreted using percentile ranges rather than fixed numbers. The ranges include,

  • Below the 5th percentile is considered underweight, while a BMI from the 5th to less than the 85th percentile indicates a healthy weight.
  • If a child’s BMI falls between the 85th and 95th percentile, they are classified as overweight, and a BMI at or above the 95th percentile is categorized as obese. If you are concerned about the result, visit a general physician in Coimbatore for personalized advice and healthcare tips to help your child have a healthy life.

Frequently asked questions

For adults, an ideal BMI is between 18.5 and 24.9, which is considered the healthy weight range.

Yes, BMI is worked out the same way for men and women, but at the same BMI, women usually carry more body fat than men.

Checking BMI once every few months is sufficient unless you are on a weight management program where regular tracking may be helpful.

A BMI of 30 or higher is considered obese, with higher classes (35–39.9 and 40+) indicating greater health risks.

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