Weight is more complex than it appears. Apart from diet and lifestyle, many underlying factors influence a person’s weight. These factors include genetics, the presence of chronic/ acute illnesses, the influence of stress, and your environment, among others. However, as a general model of assessment - your body mass index, age, weight, and height, are used to determine how much they should ideally weigh.
As a preliminary step, doctors use the BMI formula and the body mass index calculator to assess if someone is healthy or at a moderate weight. To know how much you should weigh according to your height and age, you can check the standard BMI reference chart. BMI is a standardised model of measuring a person’s body mass/ fat in relation to their weight and height. Age is not considered in the BMI formula/ calculation.
For adults, the BMI chart starts from 5 feet and 45kgs and goes up to 6.4 feet and around 98kgs. There is no BMI calculator by age. Within this chart, you can check for the numbers showcasing your BMI. To understand if you have a normal BMI or weight per your height, you have to first calculate your BMI through the BMI calculator. Enter your weight in kgs and height in metre square. Then, take the number you arrive at and refer to the chart ratios:
A BMI between 18 and 24 is normal
A BMI between 25 and 30 is overweight
A BMI above 30 is obese
A BMI below 18 is underweight
A BMI below 15 is severely underweight
A BMI above 40 is severely obese