Investment Return Calculator
Understanding the potential return on your investments is crucial for making informed financial decisions. This calculator helps you estimate the Return on Investment (ROI) for a given investment period.
function calculateROI() {
var initialInvestment = parseFloat(document.getElementById("initialInvestment").value);
var currentValue = parseFloat(document.getElementById("currentValue").value);
var timePeriod = parseFloat(document.getElementById("timePeriod").value);
var resultDiv = document.getElementById("roi-result");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(initialInvestment) || isNaN(currentValue) || isNaN(timePeriod) || initialInvestment <= 0 || timePeriod <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all fields.";
return;
}
var profit = currentValue – initialInvestment;
var roiPercentage = (profit / initialInvestment) * 100;
var annualizedROI = (Math.pow((currentValue / initialInvestment), (1 / timePeriod)) – 1) * 100;
resultDiv.innerHTML =
"
Total Profit: $" + profit.toFixed(2) + "" +
"
Total Return on Investment (ROI): " + roiPercentage.toFixed(2) + "%" +
"
Annualized Return on Investment (ROI): " + annualizedROI.toFixed(2) + "%";
}
#roi-calculator {
font-family: Arial, sans-serif;
max-width: 500px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.calculator-inputs {
display: grid;
grid-template-columns: 1fr;
gap: 15px;
}
.input-group {
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
}
.input-group input[type="number"] {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
}
#roi-calculator button {
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
#roi-calculator button:hover {
background-color: #0056b3;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e9ecef;
border-radius: 4px;
}
.calculator-result p {
margin: 5px 0;
font-size: 16px;
}
.calculator-result strong {
color: #333;
}