If (bmi fields, does the calculation, and shows the result. IMPERIAL BMI = 703 X MASS (LBS) / HEIGHT (IN) SQUAREīmi = 703 * (weight / (height * height)) īmi = Math.round(bmi * 100) / 100 // Round off 2 decimal places 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), If rate of interest is 10.5 per annum, then r 10.00875) n is loan term / tenure / duration in number of months. r is rate of interest calculated on monthly basis. Unit = document.getElementById("bmi-metric").checked, // true = metric, false = imperial Heres the formula to calculate EMI: where. Heightu = document.getElementById("bmi-height-unit") If your BMI score is less than 18.5 your weight category is Underweight If your BMI score is between 18.5 and 24.9 your weight category is Normal If your BMI score is between 30.0 and 34. Height = document.getElementById("bmi-height"), With this free online tool you are able to measure your BMI score (Body Mass Index score). Weightu = document.getElementById("bmi-weight-unit"), Weight = document.getElementById("bmi-weight"), 1 BMI Calculator with over 4 million downloads Body Mass Index calculation Waist-to-Height Ratio calculation For everyone 7 years and. 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. BMI is calculated by the following equation: BMI weight (kg) / height (m). All form checking is strictly done using HTML only – type="number", min="XXX", max="XXX", and required. Obesity is defined using the Body Mass Index (BMI).The measurement units are wrapped in and so we can change them when the user switches the unit.When the user selects either or, that 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. Because of possible rounding errors in age, weight, and height, the results from this calculator may differ slightly from BMI-for-age. This calculator provides body mass index (BMI) and the corresponding BMI-for-age percentile based on CDC growth charts for children and teens ages 2 through 19 years. The resulting BMI will indicate whether a person is underweight, just right, or overweight. BMI Percentile Calculator for Child and Teen. 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.
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