The Body Rate Calculator is a tool designed to help you understand a basic relationship between your body's output (energy expenditure) and its input (caloric intake). This calculator simplifies the concept by focusing on a fundamental balance. It's important to note that this is a highly simplified model and doesn't account for metabolic rate variations, activity intensity, nutrient composition, or other complex physiological factors that influence actual body weight changes.
function calculateBodyRate() {
var caloriesIn = parseFloat(document.getElementById("caloriesIn").value);
var caloriesOut = parseFloat(document.getElementById("caloriesOut").value);
var resultDiv = document.getElementById("result");
if (isNaN(caloriesIn) || isNaN(caloriesOut) || caloriesIn < 0 || caloriesOut 0) {
message = "You have a caloric surplus. ";
if (netCalories > 500) {
message += "This significant surplus may lead to weight gain.";
} else {
message += "This surplus could contribute to weight gain over time.";
}
} else if (netCalories 500) {
message += "This significant deficit may lead to weight loss.";
} else {
message += "This deficit could contribute to weight loss over time.";
}
} else {
message = "Your caloric intake and expenditure are balanced. This may lead to weight maintenance.";
}
resultDiv.innerHTML = "Your Net Caloric Balance: " + netCalories.toFixed(2) + " kcal" + message + "";
}
.calculator-container {
font-family: Arial, sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
.input-section {
margin-bottom: 15px;
}
.input-section label {
display: block;
margin-bottom: 5px;
font-weight: bold;
}
.input-section input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
button {
background-color: #4CAF50;
color: white;
padding: 10px 15px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 16px;
width: 100%;
margin-top: 10px;
}
button:hover {
background-color: #45a049;
}
#result {
margin-top: 20px;
padding: 10px;
border-top: 1px solid #eee;
text-align: center;
}
#result p {
margin: 5px 0;
}