Investment ROI Calculator
This calculator helps you estimate the Return on Investment (ROI) for your investments. ROI is a performance measure used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments. ROI tries to directly measure the amount of return on a particular investment, in relation to the investment's cost. To calculate ROI, the gain of the investment is divided by the cost of the investment.
Initial Investment Cost:
Current Value of Investment:
Total Additional Investments:
Total Withdrawal Amount:
Calculate ROI
function calculateROI() {
var initialInvestment = parseFloat(document.getElementById("initialInvestment").value);
var currentValue = parseFloat(document.getElementById("currentValue").value);
var additionalInvestments = parseFloat(document.getElementById("additionalInvestments").value);
var withdrawalAmount = parseFloat(document.getElementById("withdrawalAmount").value);
var roi = 0;
var resultText = "";
if (isNaN(initialInvestment) || isNaN(currentValue) || isNaN(additionalInvestments) || isNaN(withdrawalAmount)) {
resultText = "Please enter valid numbers for all fields.";
} else if (initialInvestment <= 0) {
resultText = "Initial Investment Cost must be greater than zero.";
} else {
var netProfit = (currentValue – initialInvestment) – additionalInvestments + withdrawalAmount;
roi = (netProfit / initialInvestment) * 100;
if (isNaN(roi)) {
resultText = "Calculation resulted in an invalid number. Please check your inputs.";
} else {
resultText = "
Net Profit: $" + netProfit.toFixed(2) + "";
resultText += "
Return on Investment (ROI): " + roi.toFixed(2) + "%";
}
}
document.getElementById("roi-result").innerHTML = resultText;
}
#roi-calculator-container {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
#roi-calculator-container h2 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.calculator-inputs {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px;
margin-bottom: 20px;
}
.calculator-inputs label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
grid-column: 1 / 2;
}
.calculator-inputs input[type="number"] {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
grid-column: 2 / 3;
}
#roi-calculator-container button {
display: block;
width: 100%;
padding: 12px;
background-color: #007bff;
color: white;
border: none;
border-radius: 5px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
#roi-calculator-container button:hover {
background-color: #0056b3;
}
.calculator-result {
margin-top: 25px;
padding: 15px;
border: 1px solid #eee;
border-radius: 5px;
background-color: #fff;
text-align: center;
}
.calculator-result p {
margin: 5px 0;
font-size: 1.1em;
color: #333;
}