See Amazon referral and fulfillment fees per unit, your revenue after fees, and your profit, margin, and ROI.
15% referral fee with the $0.30 minimum, editable · fulfillment fee entered for your size tier · profit, margin, and ROI in advanced mode
Free tools for Amazon sellers from Keywords Everywhere, an independent company that is not affiliated with Amazon.
Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.
Enter ad spend and ad sales for your ACoS, ROAS, and TACoS, plus the break-even and target ACoS for your margin.
ACoS, ROAS, and TACoS from three numbers · break-even and target ACoS from your margin · runs in your browser
See your Amazon KDP royalty per copy for Kindle, paperback, and hardcover from the price, pages, and interior.
Kindle 35% / 70% bands with delivery cost · paperback and hardcover printing costs, 2026 US rates · minimum list price, every rate editable
Get the spine width and full paperback cover size with bleed for any KDP trim, page count, and paper, in inches, mm, and px.
16 KDP trim sizes plus custom · spine from KDP's per-page paper thickness · inches, mm, and pixels at 300 DPI
Resize product images to Amazon sizes and check the main image for a pure white background and the 85% fill rule.
2000 px main and gallery images, 1000 px minimum · A+ content and Brand Store sizes · main image check: pure white edges and 85% fill
Paste any Amazon URL to get the clean amazon.com/dp link, the amzn.com short link, an affiliate link, and every marketplace.
finds the ASIN in any Amazon link · clean, short (amzn.com), affiliate, and reviews links · 15 marketplaces, runs in your browser
Enter an ASIN, Amazon URL, or UPC and see the product title, price, rating, availability, variations, and top reviews.
ASIN, Amazon URL, or UPC / EAN / ISBN in · price, rating, availability, variations, top reviews · 11 marketplaces, 7-day share link
Enter a keyword and see the top Amazon products for it: prices, ratings, bought in past month, badges, and the sponsored share.
top 50 products for a keyword, 11 marketplaces · price, rating, bought in past month, Best Seller and Choice badges · sponsored share and related searches
Paste an ASIN or URL and see the current price, discount, rating, and availability on six Amazon marketplaces at once.
current price on 6 marketplaces at once · discount, rating, availability per marketplace · today's price, no history or alerts
Get Amazon related searches with Amazon search volume for any seed, or check 100 keywords, with Google volume and CPC too.
Amazon related searches with Amazon volume · check up to 100 of your own keywords · Google volume, CPC, and trend beside each, favourites star
Looking for eBay, Etsy, SEO, or writing tools too? Browse all 239 free tools.
About these free Amazon tools
This page lists every Keywords Everywhere tool built for people who sell on Amazon. Selling through FBA means Amazon keeps a referral fee on every sale and a fulfillment fee on every unit, and both change with the category, the size tier, and the season, so the calculators here ship with the published 2026 rates filled in and every rate editable: type the numbers from your own Seller Central fee preview and the profit, margin, and ROI follow. New Amazon tools are added to this page as they launch; the Free eCommerce Tools page lists them alongside the eBay and Etsy tools and the general pricing, payment-fee, barcode, and invoice tools every store shares.
They are genuinely free: no signup, no trial, no credit card, and nothing connects to your Amazon seller account. The calculators run entirely in your browser, so your costs and prices never leave it. Tools that look up data draw from a daily usage allowance that keeps them fast for everyone; signing in with a Keywords Everywhere API key raises those limits on paid plans, and every plan has a cap.
Frequently asked questions
Are these Amazon tools really free?
Yes. Every tool on this page is free to use with no signup and no credit card. The calculators run in your browser with no allowance at all. Tools that look up keyword or product data draw from a daily allowance that keeps them fast and fair for everyone, and signing in with a Keywords Everywhere API key raises it on paid plans; every plan has a cap.
Which tools are included?
Ten free Amazon tools right now: Amazon FBA Revenue Calculator, Amazon ACoS Calculator, KDP Royalty Calculator, KDP Cover Size Calculator, Amazon Image Resizer, Amazon Link Generator, Amazon ASIN Lookup, Amazon Product Research Tool, Amazon Price Checker, and Amazon Keyword Tool. New Amazon tools appear on this page as they launch, and the Free eCommerce Tools page lists them next to the eBay, Etsy, and general seller tools.
Do I need an Amazon seller account, or do the tools connect to Seller Central?
No. Nothing here connects to Amazon, asks for your Seller Central login, or reads your account. The calculators work from the numbers you type; where a tool looks up public product or keyword data it does so through a licensed data provider, not through your account.
How accurate is the Amazon FBA Revenue Calculator?
It ships with Amazon's published 2026 rates: a referral fee of 15% in most categories with a $0.30 minimum, and a fulfillment fee you enter for your product's size tier (the default is a small-standard baseline; Amazon's own fee table has the exact figure for your dimensions and weight). Every rate is an editable input, because Amazon varies referral fees by category and price band, adds seasonal storage and peak-period surcharges, and changes the fulfillment table every January. Type the figures from your Seller Central fee preview and the calculator does the rest: fees per unit, profit, margin, and ROI. The Amazon FBA Revenue Calculator FAQ lists the verified-as-of date.
What is the difference between the referral fee and the fulfillment fee?
The referral fee is Amazon's commission on the sale: a percentage of the item price (15% in most categories, lower for some electronics and higher for a few others) with a $0.30 minimum, and every seller pays it whether they use FBA or ship themselves. The fulfillment fee is what FBA charges to pick, pack, and ship one unit, and it depends on the size tier and weight, not the price. Add monthly storage on top for stock that sits in a warehouse. The calculator shows all three so you can see which one is eating the margin.
Can I research Amazon keywords here?
Not yet on this page. For product demand today, the Google Keyword Tool and the Search Volume Checker give Google's search volume for any product term, which tracks marketplace demand well for most categories, and the eBay Keyword Tool shows the exact phrases marketplace shoppers type. An Amazon keyword tool with Amazon's own search volume is in the works and will appear on this page when it launches.
How do I work out what to charge on Amazon?
Start from the landed cost of one unit (product, inbound shipping, prep), add the referral and fulfillment fees the Amazon FBA Revenue Calculator shows for your price, and check the margin that is left. If it is too thin, the Margin Calculator turns your cost and a target margin into the price you need; run that price back through the FBA calculator, because the referral fee grows with the price. Leave room for advertising: on a new listing, ad spend often takes another 10-30% of sales.
Is there a limit on how much I can use them?
The calculators have no limit. Tools that look up keyword or product data have a per-day usage allowance so that a few heavy users cannot slow them down for everyone; the free allowances are generous for typical use, and signing in on a paid Keywords Everywhere plan raises the daily caps. Every plan has a cap, higher tiers simply get a higher one.