Rate of Return Calculator
The Rate of Return (RoR) is a performance measure used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments. It is expressed as a percentage and represents the gain or loss generated on an investment over a specific period. A positive RoR indicates a profitable investment, while a negative RoR signifies a loss.
Calculate Rate of Return
.roi-calculator {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
.roi-calculator h2 {
text-align: center;
color: #333;
margin-bottom: 15px;
}
.calculator-inputs {
margin-bottom: 20px;
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.input-group input {
width: calc(100% – 12px);
padding: 8px;
border: 1px solid #ddd;
border-radius: 4px;
box-sizing: border-box;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e8f5e9;
border: 1px solid #c8e6c9;
border-radius: 4px;
text-align: center;
font-size: 1.1em;
color: #2e7d32;
font-weight: bold;
}
button {
display: block;
width: 100%;
padding: 10px 15px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
font-size: 1em;
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #45a049;
}
function calculateRoR() {
var initialInvestment = parseFloat(document.getElementById("initialInvestment").value);
var finalValue = parseFloat(document.getElementById("finalValue").value);
var timePeriod = parseFloat(document.getElementById("timePeriod").value);
var resultDiv = document.getElementById("result");
if (isNaN(initialInvestment) || isNaN(finalValue) || isNaN(timePeriod) || initialInvestment <= 0 || timePeriod <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all fields.";
resultDiv.style.backgroundColor = "#ffebee";
resultDiv.style.borderColor = "#ef9a9a";
resultDiv.style.color = "#c62828";
return;
}
// Formula for Rate of Return: ((Final Value – Initial Investment) / Initial Investment) * 100
var profitOrLoss = finalValue – initialInvestment;
var rateOfReturn = (profitOrLoss / initialInvestment) * 100;
// Formula for Annualized Rate of Return: ((Final Value / Initial Investment)^(1/Time Period) – 1) * 100
var annualizedRateOfReturn = (Math.pow((finalValue / initialInvestment), (1 / timePeriod)) – 1) * 100;
resultDiv.innerHTML = "Rate of Return: " + rateOfReturn.toFixed(2) + "%" +
"Annualized Rate of Return: " + annualizedRateOfReturn.toFixed(2) + "%";
resultDiv.style.backgroundColor = "#e8f5e9";
resultDiv.style.borderColor = "#c8e6c9";
resultDiv.style.color = "#2e7d32";
}