#roi-calculator-container {
font-family: sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ccc;
border-radius: 8px;
background-color: #f9f9f9;
}
#roi-calculator-container h2 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.roi-input-group {
margin-bottom: 15px;
}
.roi-input-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.roi-input-group input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.roi-button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 16px;
margin-top: 20px;
}
.roi-button:hover {
background-color: #45a049;
}
#roi-result {
margin-top: 25px;
padding: 15px;
background-color: #e7f3e7;
border: 1px solid #a3d9a3;
border-radius: 4px;
text-align: center;
font-size: 1.1em;
color: #333;
}
#roi-result span {
font-weight: bold;
color: #4CAF50;
}
.roi-article-section {
margin-top: 30px;
color: #444;
line-height: 1.6;
}
.roi-article-section h3 {
color: #333;
margin-bottom: 10px;
}
Understanding Return on Investment (ROI)
Return on Investment (ROI) is a performance measure used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments. ROI measures the amount of return on a particular investment, relative to the investment's cost. To calculate ROI, the benefit (or return) of an investment is divided by the cost of the investment.
The formula for ROI is:
ROI = ((Current Value of Investment – Cost of Investment) / Cost of Investment) * 100
A positive ROI indicates that the investment has generated a profit, while a negative ROI signifies a loss. For instance, if you invest $10,000 and it grows to $15,000, your ROI would be 50%.
Why is ROI Important?
ROI is a crucial metric for investors and businesses because it provides a clear, quantifiable measure of profitability. It helps in:
- Decision Making: Identifying which investments are most profitable and allocating capital accordingly.
- Performance Evaluation: Assessing the success of past investments and strategies.
- Comparison: Comparing the profitability of different types of investments or projects on an equal footing.
Using this calculator, you can quickly estimate the ROI of your investments to better understand their performance.
function calculateROI() {
var initialInvestmentInput = document.getElementById("initialInvestment");
var currentValueInput = document.getElementById("currentValue");
var resultDiv = document.getElementById("roi-result");
var initialInvestment = parseFloat(initialInvestmentInput.value);
var currentValue = parseFloat(currentValueInput.value);
if (isNaN(initialInvestment) || isNaN(currentValue) || initialInvestment <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for both fields.";
return;
}
var profit = currentValue – initialInvestment;
var roi = (profit / initialInvestment) * 100;
resultDiv.innerHTML = "Your Investment ROI is: