This calculator helps you determine the drop rate of an item in a game or any system where items are randomly obtained. The drop rate is the probability that a specific item will be obtained from a certain number of attempts or drops.
.calculator-container {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-container h2 {
text-align: center;
margin-bottom: 15px;
color: #333;
}
.calculator-container p {
text-align: justify;
margin-bottom: 20px;
color: #555;
line-height: 1.6;
}
.input-section {
margin-bottom: 15px;
}
.input-section label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #444;
}
.input-section input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 16px;
transition: background-color 0.3s ease;
}
.calculator-container button:hover {
background-color: #0056b3;
}
#result {
margin-top: 20px;
padding: 15px;
background-color: #e9ecef;
border: 1px solid #ced4da;
border-radius: 4px;
text-align: center;
font-weight: bold;
color: #333;
font-size: 1.1em;
}
function calculateDropRate() {
var itemsObtainedInput = document.getElementById("itemsObtained");
var totalAttemptsInput = document.getElementById("totalAttempts");
var resultDiv = document.getElementById("result");
var itemsObtained = parseFloat(itemsObtainedInput.value);
var totalAttempts = parseFloat(totalAttemptsInput.value);
if (isNaN(itemsObtained) || isNaN(totalAttempts)) {
resultDiv.textContent = "Please enter valid numbers for all fields.";
return;
}
if (totalAttempts <= 0) {
resultDiv.textContent = "Total attempts must be greater than zero.";
return;
}
if (itemsObtained totalAttempts) {
resultDiv.textContent = "Items obtained cannot be more than total attempts.";
return;
}
var dropRate = (itemsObtained / totalAttempts) * 100;
resultDiv.textContent = "Calculated Drop Rate: " + dropRate.toFixed(2) + "%";
}