.fba-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 12px;
background-color: #ffffff;
box-shadow: 0 4px 20px rgba(0,0,0,0.08);
color: #333;
}
.fba-calc-header {
text-align: center;
margin-bottom: 30px;
}
.fba-calc-header h2 {
color: #232f3e;
margin-bottom: 10px;
font-size: 28px;
}
.fba-calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
.fba-calc-grid { grid-template-columns: 1fr; }
}
.fba-input-group {
margin-bottom: 15px;
}
.fba-input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
font-size: 14px;
color: #555;
}
.fba-input-group input {
width: 100%;
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 16px;
box-sizing: border-box;
}
.fba-input-group input:focus {
outline: none;
border-color: #ff9900;
box-shadow: 0 0 5px rgba(255, 153, 0, 0.3);
}
.fba-btn-calculate {
grid-column: span 2;
background-color: #ff9900;
color: #fff;
border: none;
padding: 15px;
border-radius: 6px;
font-size: 18px;
font-weight: bold;
cursor: pointer;
transition: background 0.3s;
margin-top: 10px;
}
@media (max-width: 600px) {
.fba-btn-calculate { grid-column: span 1; }
}
.fba-btn-calculate:hover {
background-color: #e68a00;
}
.fba-results {
margin-top: 30px;
padding: 20px;
background-color: #f7f9f9;
border-radius: 8px;
display: none;
}
.fba-result-row {
display: flex;
justify-content: space-between;
padding: 10px 0;
border-bottom: 1px solid #ddd;
}
.fba-result-row:last-child {
border-bottom: none;
}
.fba-result-label {
font-weight: 500;
color: #444;
}
.fba-result-value {
font-weight: 700;
color: #232f3e;
}
.fba-profit-highlight {
font-size: 20px;
color: #2e7d32 !important;
}
.fba-article {
margin-top: 40px;
line-height: 1.6;
color: #444;
}
.fba-article h3 {
color: #232f3e;
margin-top: 25px;
}
.fba-article ul {
padding-left: 20px;
}
Selling Price ($)
Product Cost (COGS) ($)
Shipping to Amazon (per unit) ($)
Referral Fee (%)
Fulfillment (FBA) Fee ($)
Storage/PPC/Other ($)
Calculate Net Profit
Total Revenue:
$0.00
Amazon Referral Fee:
$0.00
Total Amazon Fees:
$0.00
Net Profit per Unit:
$0.00
Net Margin:
0%
Return on Investment (ROI):
0%
How to Use the Amazon FBA Profit Calculator
Successful Amazon sellers know that "top-line revenue" is a vanity metric. What matters is what you keep after Jeff Bezos takes his cut. This calculator helps you break down the true costs of Fulfillment by Amazon.
Key Metrics Explained
Selling Price: The final price the customer pays on Amazon.com.COGS (Cost of Goods Sold): The price you pay your manufacturer per unit.Referral Fee: Amazon's "commission" for selling on their platform, typically 15% for most categories.FBA Fulfillment Fee: The cost for Amazon to pick, pack, and ship your product. This varies based on weight and dimensions.ROI (Return on Investment): Calculated as (Net Profit / Total Cost). This shows how efficiently your capital is working.
Example Calculation
Imagine you sell a yoga mat for $35.00 . Your manufacturing cost is $10.00 and shipping to the warehouse is $2.00 . Amazon takes a 15% referral fee ($5.25 ) and charges an FBA fee of $6.00 . You spend roughly $3.00 per unit on PPC advertising and storage.
Total Costs: $10 + $2 + $5.25 + $6 + $3 = $26.25Net Profit: $35.00 – $26.25 = $8.75 Profit Margin: 25%
Tips to Increase Your FBA Margins
1. Optimize Packaging: Small reductions in box dimensions can drop you into a lower FBA fee tier, saving dollars per unit.
2. Negotiate with Suppliers: As your volume grows, target a 5-10% reduction in COGS to directly boost your bottom line.
3. Watch Your ACOS: Amazon PPC can quickly eat your profit. Monitor your Advertising Cost of Sale (ACOS) to ensure your "Other Costs" don't spiral.
function calculateFBAProfit() {
var sellPrice = parseFloat(document.getElementById('fba_sellPrice').value) || 0;
var costProduct = parseFloat(document.getElementById('fba_costProduct').value) || 0;
var shippingToAmz = parseFloat(document.getElementById('fba_shippingToAmz').value) || 0;
var referralRate = parseFloat(document.getElementById('fba_referralFee').value) || 0;
var fulfillmentFee = parseFloat(document.getElementById('fba_fulfillmentFee').value) || 0;
var otherCosts = parseFloat(document.getElementById('fba_otherCosts').value) || 0;
if (sellPrice <= 0) {
alert("Please enter a valid selling price.");
return;
}
// Calculations
var referralFeeAmount = sellPrice * (referralRate / 100);
var totalAmazonFees = referralFeeAmount + fulfillmentFee;
var totalCosts = costProduct + shippingToAmz + totalAmazonFees + otherCosts;
var netProfit = sellPrice – totalCosts;
var netMargin = (netProfit / sellPrice) * 100;
var roi = (netProfit / (costProduct + shippingToAmz)) * 100;
// UI Updates
document.getElementById('res_revenue').innerHTML = "$" + sellPrice.toFixed(2);
document.getElementById('res_referral').innerHTML = "$" + referralFeeAmount.toFixed(2);
document.getElementById('res_totalFees').innerHTML = "$" + totalAmazonFees.toFixed(2);
document.getElementById('res_netProfit').innerHTML = "$" + netProfit.toFixed(2);
document.getElementById('res_margin').innerHTML = netMargin.toFixed(2) + "%";
document.getElementById('res_roi').innerHTML = isFinite(roi) ? roi.toFixed(2) + "%" : "0.00%";
// Show Results
document.getElementById('fba_results_box').style.display = "block";
// Color coding for profit/loss
if (netProfit < 0) {
document.getElementById('res_netProfit').style.color = "#d32f2f";
} else {
document.getElementById('res_netProfit').style.color = "#2e7d32";
}
}