Calorie Calculator

gistfile1.js

// Inputs
var sex = "male"                   // "male" || "female"
var age = 24                       // Age in years
var height = 172                   // Height in centimeters
var weight = 75                    // Weight in kilograms
var activity_scalar = 1.2          // 1 -> 1.9 (1 being motionless, 1.9 being hugely active)


calculateBMR = function(sex, age, weight, height) {
  var bMR = 0;
  bMR = (9.99 * weight) + (6.25 * height) - (4.92 * age);
  if (sex == "male") {
    bMR += 5
  } else {
    bMR -= 161
  }
  
  return bMR
}


calculateTDEE = function(bMR, activity_scalar) {
  return bMR * activity_scalar;
}

calculateCalories = function(sex, age, weight, height, activity_scalar) {
  var bMR = calculateBMR(sex, age, weight, height);
  return calculateTDEE(bMR, activity_scalar);
}



// Activity Scalar Explanation
//
// 1.0 - Basal Metabolic Rate (energy required to be alive - no exercise whatsoever)
// 1.2 - Little to no exercise (walking around the house)
// 1.375 - Exercising 3 times per week (15-30 minutes each time)
// 1.4187 - Exercising 4 times per week
// 1.4625 - Exercising 5 times per week
// 1.550 - Exercising Daily
// 1.6375 - Exercising Intensely (45m+) 5 times per week
// 1.725 - Daily (intense) or twice daily regular exercise
// 1.9 - Daily exercise + physically demanding job
//