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Key fact: Amazon FBA fulfillment costs $3.45 per small-standard unit in 2026, with monthly storage at $0.78 per cubic foot off-peak and $2.40 in Q4, plus a 3.5% fuel surcharge and an 8% referral fee for electronics.
Calculate Amazon FBA fees and profit margins directly on any product page. Auto-detects ASIN, price, weight, and dimensions.
Automatically extracts ASIN, price, weight, and dimensions from any Amazon product page.
Enter your cost and see profit, margin, ROI, and fee breakdown instantly.
Updated with latest Amazon fulfillment fees, referral fees, and storage costs.
Save calculations to history. Track profitability across multiple products.
Click the download button above to get the extension file.
Type chrome://extensions/ in your address bar and press Enter.
Toggle the "Developer mode" switch in the top-right corner.
Drag the downloaded fba-calculator-extension.crx file into the Extensions page.
Visit any Amazon product page — the FBA Calculator panel will appear automatically on the right side!
Check referral, fulfillment and storage fees on a real product in under a minute.
Yes, completely free and open source. No hidden fees, no data collection.
Currently supports Amazon.com (US). Support for UK, DE, JP is planned.
No. All calculations are done locally in your browser. Nothing is sent to any server.
Uses 2026 Amazon FBA fee schedules based on product weight and dimensions. Fees are estimates — actual fees may vary slightly based on Amazon's measurement.
Yes — the ylishi.tools FBA Calculator Chrome extension is free and calculates Amazon FBA fees and profit margins directly on Amazon product pages, with no signup or subscription required.
It auto-detects ASIN, price, weight, and dimensions on Amazon product pages, then applies the January 15, 2026 FBA rate card plus the 3.5% fuel surcharge to show fulfillment fees, referral fees, estimated net profit, and margin without leaving the page.
The extension calculates referral fees by category, FBA fulfillment fees by size tier, the 3.5% fuel & logistics surcharge effective April 17, 2026, monthly storage, and inbound placement — with editable inputs for COGS and PPC to reach true net profit.
The extension applies the 2026 Amazon US rate card (effective January 15, 2026). For EU fees or other marketplaces such as Temu, TikTok Shop, and Walmart, use the web-based calculators on ylishi.tools.
Estimates follow Amazon's published January 15, 2026 US rate card including the April 17, 2026 fuel surcharge. Actual charges can differ if Amazon reclassifies the size tier, so verify weight and dimensions for high-volume products.
The extension gives instant per-product estimates while browsing Amazon product pages. The web calculators at ylishi.tools add multi-platform support (Amazon, eBay, Temu, TikTok Shop, Walmart), full cost breakdowns, and batch profit analysis.