Calculate your net margins, ROI, and Amazon fees instantly.
Total Amazon Fees:
Total Unit Cost:
Net Profit per Unit:
Profit Margin:
ROI (Return on Investment):
How to Use the Amazon FBA Profit Calculator
Success on Amazon hinges on understanding your numbers. This Amazon FBA Profit Calculator helps sellers determine the true profitability of a product after accounting for all hidden Amazon fees and logistics costs.
Understanding the Fees
Selling Price: The final price the customer pays for your product.
Cost of Goods (COGS): The manufacturing cost per unit plus packaging.
Referral Fee: Usually 15% for most categories, this is Amazon's commission for selling on their platform.
FBA Pick & Pack Fee: The cost for Amazon to store, pick, pack, and ship your product. This varies based on weight and dimensions.
Storage Fees: Monthly costs for holding your inventory in Amazon fulfillment centers.
Real-World Example
Imagine you source a kitchen gadget for $5.00 and ship it to Amazon for $1.00. You sell it for $25.00. If the FBA fee is $5.00 and the Referral fee is 15% ($3.75), your total costs before ads would be $14.75. Your net profit would be $10.25, giving you a healthy 41% margin.
Why Monitoring ROI Matters
While margin tells you how much of each dollar you keep, ROI (Return on Investment) tells you how hard your money is working. High ROI products allow you to reinvest capital faster and scale your Amazon business more aggressively.
function calculateFBAProfit() {
var price = parseFloat(document.getElementById('fba_price').value) || 0;
var productCost = parseFloat(document.getElementById('fba_cost').value) || 0;
var shipping = parseFloat(document.getElementById('fba_shipping').value) || 0;
var referralPercent = parseFloat(document.getElementById('fba_referral').value) || 0;
var pickPack = parseFloat(document.getElementById('fba_pick_pack').value) || 0;
var storage = parseFloat(document.getElementById('fba_storage').value) || 0;
var ads = parseFloat(document.getElementById('fba_ads').value) || 0;
var misc = parseFloat(document.getElementById('fba_misc').value) || 0;
if (price 0 ? (netProfit / upfrontInvestment) * 100 : 0;
// Display Results
document.getElementById('fba_results').style.display = 'block';
document.getElementById('res_total_fees').innerHTML = "$" + totalAmazonFees.toFixed(2);
document.getElementById('res_total_cost').innerHTML = "$" + totalExpenses.toFixed(2);
var profitEl = document.getElementById('res_net_profit');
profitEl.innerHTML = "$" + netProfit.toFixed(2);
profitEl.className = netProfit >= 0 ? 'fba-result-value profit-positive' : 'fba-result-value profit-negative';
document.getElementById('res_margin').innerHTML = margin.toFixed(2) + "%";
document.getElementById('res_roi').innerHTML = roi.toFixed(2) + "%";
// Scroll to results on mobile
document.getElementById('fba_results').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}