How to Calculate BMI for Children

BMI (body mass index) is a weight standard that attempts to calculate body fat percentages by taking into account both height and weight. BMI can be useful for helping to determine whether a child has a healthy body weight in proportion to the child's height. Knowing how to calculate BMI for children can be a useful health measurement to understand.

Things You'll Need

• Bathroom scale Ruler

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Instructions

• 1

  Weigh your child using the bathroom scale. Record the number. Ensure the recorded weight is accurate by removing any heavy articles of clothing and shoes before weighing your child.

• 2

  Measure your child's height using the ruler. Record the number in inches. Ensure the height is accurate by measuring your child in the morning.

• 3

  Divide the weight of your child by the squared height of your child.

• 4

  Multiply the product of the equation in Step 3 by 703. The resulting number is your child's body mass index (BMI).