A scrap rate calculator helps determine the percentage of material that is wasted or discarded during a manufacturing or production process. Understanding and reducing scrap rate is crucial for improving efficiency, reducing costs, and increasing profitability.
Calculation Results:
.calculator-container {
font-family: Arial, sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ccc;
border-radius: 8px;
background-color: #f9f9f9;
}
.calculator-container h2 {
text-align: center;
color: #333;
}
.calculator-container p {
text-align: justify;
margin-bottom: 20px;
color: #555;
}
.calculator-inputs {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 15px;
margin-bottom: 20px;
}
.input-group {
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #444;
}
.input-group input {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1em;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 5px;
font-size: 1.1em;
cursor: pointer;
transition: background-color 0.3s ease;
}
.calculator-container button:hover {
background-color: #0056b3;
}
.calculator-results {
margin-top: 25px;
padding: 15px;
border: 1px dashed #007bff;
border-radius: 5px;
background-color: #e7f3ff;
}
.calculator-results h3 {
margin-top: 0;
color: #007bff;
}
.calculator-results div {
margin-bottom: 10px;
font-size: 1.1em;
color: #333;
}
function calculateScrapRate() {
var totalItemsProduced = parseFloat(document.getElementById("totalItemsProduced").value);
var defectiveItems = parseFloat(document.getElementById("defectiveItems").value);
var costPerItem = parseFloat(document.getElementById("costPerItem").value);
var scrapValuePerItem = parseFloat(document.getElementById("scrapValuePerItem").value);
var resultsDiv = document.getElementById("results");
var scrapRatePercentageDiv = document.getElementById("scrapRatePercentage");
var totalScrapCostDiv = document.getElementById("totalScrapCost");
var netScrapCostDiv = document.getElementById("netScrapCost");
// Clear previous results
scrapRatePercentageDiv.innerHTML = "";
totalScrapCostDiv.innerHTML = "";
netScrapCostDiv.innerHTML = "";
// Input validation
if (isNaN(totalItemsProduced) || totalItemsProduced <= 0) {
scrapRatePercentageDiv.innerHTML = "Please enter a valid number for Total Items Produced (must be greater than 0).";
return;
}
if (isNaN(defectiveItems) || defectiveItems < 0) {
scrapRatePercentageDiv.innerHTML = "Please enter a valid number for Defective Items (must be 0 or greater).";
return;
}
if (isNaN(costPerItem) || costPerItem < 0) {
scrapRatePercentageDiv.innerHTML = "Please enter a valid number for Cost Per Item (must be 0 or greater).";
return;
}
if (isNaN(scrapValuePerItem) || scrapValuePerItem totalItemsProduced) {
scrapRatePercentageDiv.innerHTML = "Defective Items cannot be greater than Total Items Produced.";
return;
}
// Calculations
var scrapRate = (defectiveItems / totalItemsProduced) * 100;
var totalScrapCost = defectiveItems * costPerItem;
var totalSalvageValue = defectiveItems * scrapValuePerItem;
var netScrapCost = totalScrapCost – totalSalvageValue;
// Display results
scrapRatePercentageDiv.innerHTML = "Scrap Rate: " + scrapRate.toFixed(2) + "%";
totalScrapCostDiv.innerHTML = "Total Scrap Cost: $" + totalScrapCost.toFixed(2);
netScrapCostDiv.innerHTML = "Net Scrap Cost: $" + netScrapCost.toFixed(2);
}