This calculator helps you estimate the potential return on your investment. Understanding your Return on Investment (ROI) is crucial for making informed financial decisions. ROI is a performance measure used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments.
function calculateROI() {
var initialInvestment = parseFloat(document.getElementById("initialInvestment").value);
var currentValue = parseFloat(document.getElementById("currentValue").value);
var additionalInvestment = parseFloat(document.getElementById("additionalInvestment").value) || 0; // Default to 0 if empty
var resultDiv = document.getElementById("roi-result");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(initialInvestment) || isNaN(currentValue)) {
resultDiv.innerHTML = "Please enter valid numbers for Initial Investment and Current Value.";
return;
}
var totalInvestment = initialInvestment + additionalInvestment;
var profit = currentValue – totalInvestment;
var roiPercentage = (profit / totalInvestment) * 100;
if (isNaN(roiPercentage)) {
resultDiv.innerHTML = "Calculation error. Please check your inputs.";
return;
}
var roiHtml = "