This calculator helps you determine the prorated cost of an expense over a specific period. This is useful for situations like shared rent, subscriptions, or any cost that needs to be divided fairly based on usage or time.
.calculator-container {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-container h2 {
text-align: center;
margin-bottom: 15px;
color: #333;
}
.calculator-container p {
margin-bottom: 20px;
line-height: 1.6;
color: #555;
}
.input-section label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: #444;
}
.input-section input {
width: calc(100% – 22px);
padding: 10px;
margin-bottom: 15px;
border: 1px solid #ddd;
border-radius: 4px;
box-sizing: border-box;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 15px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.calculator-container button:hover {
background-color: #0056b3;
}
.result-section {
margin-top: 20px;
padding: 15px;
background-color: #e9ecef;
border: 1px solid #ced4da;
border-radius: 4px;
text-align: center;
font-size: 18px;
font-weight: bold;
color: #333;
}
function calculateProratedCost() {
var totalCost = parseFloat(document.getElementById("totalCost").value);
var totalPeriodDays = parseFloat(document.getElementById("totalPeriodDays").value);
var usageDays = parseFloat(document.getElementById("usageDays").value);
var resultDiv = document.getElementById("result");
if (isNaN(totalCost) || isNaN(totalPeriodDays) || isNaN(usageDays) || totalPeriodDays <= 0 || usageDays < 0) {
resultDiv.innerHTML = "Please enter valid numbers for all fields. Total period must be greater than 0, and usage days cannot be negative.";
return;
}
// Calculate the cost per day
var costPerDay = totalCost / totalPeriodDays;
// Calculate the prorated cost
var proratedCost = costPerDay * usageDays;
// Display the result
resultDiv.innerHTML = "Your Prorated Expense is: " + proratedCost.toFixed(2);
}