Bmi and waist calculator for women how to#

The lean body mass calculator also outputs the lean mass index (LMI) in kg per meter squared (kg/m -2) which is a measure similar to BMI but for lean mass instead of total body mass. These error bounds on the estimate have to be taken into account when using the calculation results for the amount of muscle, ligaments and essential fat which constitutes the lean body mass. In calculating lean body mass with these equations the standard error of the estimate is ~3.5 percent points in either direction, meaning that about 68% of estimated body fat percentages will fall within ☓.5 of the true BFP, while ~95% of estimated BFPs will fall within ☗ of it. Note the instructions on obtaining accurate measurements. Navy Method Body fat formula and then subtracts the fat percent from the total mass to produce the final estimate. lean body weight, LBW), the calculator uses the U.S.

Bmi and waist calculator for women how to#

How to measure neck, waist and hip circumference?.If you're suffering from an eating disorder, the BMI calculator results do not apply. Your can use your BMI result as a starting point for further discussion with your GP about your weight and your general health.įind out more in How your GP can help and check out the Change4Life website for practical tips on staying healthy as a family. However, the BMI is a relatively straightforward and convenient method of assessing someone's weight. adults who lose muscle as they get older may fall in the 'healthy weight' range even though they may be carrying excess fat.very muscular adults and athletes may be classed 'overweight' or 'obese' even though their body fat is low.

The adult BMI does not take into account age, gender or muscle mass. The BMI can't tell the difference between excess fat, muscle, or bone. Your BMI can tell you if you're carrying too much weight but it can't tell if you're carrying too much fat. If you're concerned about your child's weight, contact your GP who may be able to refer you to your local healthy lifestyle programme for children, young people and families. Measuring waist size is not routinely advised for children because it doesn't take their height into account. For example, a girl on the 75th centile is heavier than 75 out of 100 other girls her age.

Find out more in very overweight childrenĪ child's BMI is expressed as a 'centile' to show how their BMI compares to children who took part in national surveys. If you're concerned about your child's weight, see your GP. Get tips on how to encourage your child to be more active and eat well

healthy weight: between the 2nd and 91st centiles.

underweight: on the 2nd centile or below.

The BMI calculator works out if a child or young person is: Obese children are thought to be at increased risk of a variety of health conditions, and they're also more likely to be overweight or obese as adults. For children and young people aged two to 18, the BMI calculator takes into account age and gender as well as height and weight.