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BMI CALCULATOR FORMULA UPDATE

BMI CALCULATOR FORMULA UPDATE

(B2) Update the calculation accordingly.(B1) Remove unit, there’s no need to check for the unit anymore.Remove measureBMI(), since there’s no use for this function anymore.Update the min/max weight and height accordingly.There is a different set of BMI calculations for children and teens – cdc.gov

Please take note that the above BMI calculation is only accurate for adults. Inside the square where your weight and height meet is a number that is an estimate of your BMI. First, identify your weight (to the nearest 10 pounds) in one of the columns across the top, then move your finger down the column until you come to the row that represents your height. That’s all for this tutorial, and here is a small section on some extras and links that may be useful to you. You can also determine your BMI using the table below. If (bmi fields, does the calculation, and shows the result. IMPERIAL BMI = 703 X MASS (LBS) / HEIGHT (IN) SQUAREīmi = 703 * (weight / (height * height)) METRIC BMI = MASS (KG) / HEIGHT (M) SQUARE Results = document.getElementById("bmi-results") Height = parseInt(document.getElementById("bmi-height").value), Weight = parseInt(document.getElementById("bmi-weight").value), Unit = document.getElementById("bmi-metric").checked, // true = metric, false = imperial Heightu = document.getElementById("bmi-height-unit") Height = document.getElementById("bmi-height"), Weightu = document.getElementById("bmi-weight-unit"), Weight = document.getElementById("bmi-weight"), Let unit = document.getElementById("bmi-metric").checked, Ģ-bmi.js // (A) CHANGE BMI MEASURING SYSTEM

Finally, onsubmit="return calcBMI()" will handle the calculations when the form is submitted, and the results will be put into.

We do not need to manually check if the user has entered a valid number using Javascript.

All form checking is strictly done using HTML only – type="number", min="XXX", max="XXX", and required.

The measurement units are wrapped in and so we can change them when the user switches the unit.

When the user selects either or, which will fire onchange="measureBMI()" to handle the unit change – More on that below.

It is only a simple with only 3 fields… and a submit button.Īlso, take note of the various tiny details here: The HTML should not be too difficult to understand. The resulting BMI will indicate whether a person is underweight, just right, or overweight. In the metric system, BMI is calculated with the following formula:įor you guys who are using the Imperial measurement system, simply multiply it by 703: Simply put, BMI is nothing but a number used to indicate if one has the “correct weight for the given height”.

It is defined as a person’s weight in kilograms divided by the square of the person’s height in metres (kg/m2). All right, let us now get started with the basics – Just what is BMI, and how it is calculated.īMI, formerly called the Quetelet index, is a measure for indicating nutritional status in adults.