BMI is calculated using your child’s weight and height and is then used to find the corresponding BMI-for-age percentile for your child’s age and sex. BMI-for-age percentile shows how your child’s weight compares to that of other children of the same age and sex.

## How do you calculate BMI percentile?

BMI = body mass / height² , Weight and height need to be in SI units (kilograms and metres respectively), as the BMI units are kg/m2. Remember that you can switch between the units directly in our BMI percentile calculator, or use any of our converters.

## How do you calculate a child’s BMI?

To calculate your child’s BMI:

- Take your child’s weight in pounds. (For example, 37 pounds, 4 ounces becomes 37.25.)
- Divide that number by 2.2. (So, 37.25 divided by 2.2 equals 16.9 kilograms.).
- The resulting number is your child’s weight in kilograms.

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## Is BMI calculated the same for children?

BMI is interpreted differently for children and teens even though it is calculated with the same formula. Due to changes in weight and height with age, as well as their relation to body fatness, BMI levels among children and teens are expressed relative to other children of the same sex and age.

## What is my child’s percentile?

A percentile shows the relative position of the child’s BMI, Weight, or Height among children of the same sex and age. For example, a boy at the 25th percentile for weight weighs more than 25% of boys his age. If a girl is at the 40th percentile for weight, she weighs more than 40% of girls at that same age.

## What is the ideal BMI percentile?

Healthy weight: BMI is equal to or greater than the 5th percentile and less than the 85th percentile for age, gender, and height. Overweight: BMI is at or above the 85th percentile but less than the 95th percentile for age, gender, and height. Obese: BMI is at or above the 95th percentile for age, gender, and height.

## What does BMI for age percentile mean?

BMI-for-age percentile shows how your child’s weight compares to that of other children of the same age and sex. For example, a BMI-for-age percentile of 65 means that the child’s weight is greater than that of 65% of other children of the same age and sex.

## What is a good BMI score?

If your BMI is: Under 18.5 – you are very underweight and possibly malnourished. 18.5 to 24.9 – you have a healthy weight range for young and middle-aged adults. 25.0 to 29.9 – you are overweight.

## What is the use of BMI percentile?

BMI percentiles are widely used to classify children as overweight or obese with the overall objective of identifying children at higher health risk. The utility of these percentiles to identify those with higher levels of risk is not well studied.

## How do you calculate BMI example?

Description

- Formula: weight (kg) / [height (m)]2 With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared. …
- Example: Weight = 68 kg, Height = 165 cm (1.65 m)
- Calculation: 68 ÷ (1.65 x 1.65) = 24.98.

## Is BMI accurate in kids?

Experts generally consider BMI for kids to be a good measure of body fat, at least among heavier children. But in some cases it might be misleading. Athletic kids, in particular, may fall into the overweight category when they are actually muscular. Your child’s BMI is important, but it is only a piece of the picture.

## What is a good BMI for my age?

A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight. A BMI over 30 indicates obesity.

## What BMI should a 14 year old have?

A BMI between 25 to 29.9 is considered overweight. Anything over 30 is considered obese. Normal BMI is between 18.5 and 24.9.

## Do baby percentiles matter?

A healthy child can fall anywhere on the chart. A lower or higher percentile doesn’t mean there is something wrong with your baby. Regardless of whether your child is in the 95th or 15th percentile, what matters is that she or he is growing at a consistent rate over time.

## What is normal growth percentile?

A normal rate of growth means the child’s growth points closely follow a percentile line on the chart. We usually don’t worry about insufficient (or excessive) growth until a child’s growth rate has crossed at least two percentile lines (e.g., from above the 90th percentile to below the 50th).

## How tall will a boy in the 25th percentile be?

The result is his predicted height. For example, if your son is 43 inches tall at age 6 (the 10th percentile), then you could possibly expect him to be 66 inches (5 feet 6 inches) tall as an adult (the 25th percentile at 19 to 20 years old).