If you’re already an Amazon FBA seller then, we don’t need to tell you that competition is tough. There are now well over two million active third-party sellers on Amazon worldwide and, with new sellers joining every day, that figure keeps climbing. (This list has been reviewed and updated for 2026 — links, pricing and tool status checked.)
Knowing which products to sell and, how profitable those sales will be, can be the difference between success and failure for a seller and, whilst we don’t have a crystal ball, our pick of the best sales estimators will help you make an informed decision. If you want sales estimation bundled with deeper product, keyword and profit research in one suite, an all-in-one platform like Helium 10 is also worth a look. For example, say you’re thinking of selling the latest children’s novelty but want to gain an idea of how many you may sell; a sales estimator will work out a rough figure based on ranking and historical data. This information, whilst not a guarantee, will help you to decide if the investment will be worth your while in terms of outlay and profits.
1. ProfitGuru Sales Estimator
The original Zally.io tool that first sat in this spot has since pivoted away from Amazon selling, so we’ve swapped in a still-active free alternative. ProfitGuru’s free sales estimator covers the US, UK, Europe and other major marketplaces. With a quick and simple online process, you pick a product’s category and enter its Best Sellers Rank to get an instant estimate of its monthly sales volume — handy for sizing up an opportunity in seconds. Although not the most sophisticated system, it’s a good one to keep on your favourites list for fast checks.
2. Jungle Scout
Also free to use, the Jungle Scout sales estimator can be accessed from its website but should only be used as a rough estimate as it is based purely on sales ranking, not the individual product. The Jungle Scout sales estimator will show, from any Amazon page, the number of sellers and reviews for any given product and offers a number of categories to choose from to narrow down the estimate, however users need to know the sales rank of a product in order to gain a rough sales estimate.
3. AMZScout
Similar to Jungle Scout, the AMZScout sales estimator can be accessed online for convenience and works by estimating a product’s sales from its sales rank, which means you’ll need to know a product’s ranking to get a rough estimate. AMZScout supports the US, UK, Canada, India, Mexico, Spain, Italy, France and Germany among other marketplaces, giving it great overall coverage. Accuracy is strongest in the US and a little more variable elsewhere. There’s a free version of the estimator, while the full PRO Extension and Seller’s Bundle are now subscription-based — starting around $59.99 per month (with cheaper quarterly and annual options); check the site for current pricing. AMZScout’s customer support continues to score well across most review sites.
4. SmartScout
Unicorn Smasher, which originally filled this slot, is no longer actively maintained, so we’ve replaced it with SmartScout. SmartScout goes well beyond a basic estimator — it surfaces estimated monthly sales and revenue alongside brand-level data, market share and category insights, making it useful for both product research and competitive analysis. It’s a paid tool (with a free trial), so it’s a step up from the free-but-rough estimators on this list. Check the site for current pricing.
5. ASINspector
ASINspector (see what they did there?) is an accurate and reliable Amazon sales estimator in addition to a host of other tools. Promising instant monthly sales volume of products being sold on Amazon, ASINspector has solid customer reviews and testimonials to back up its claims. It offers two main packages: the one-time $97 Standard plan, and the Pro+ plan at a one-time $147 followed by $10 per month in data fees (pricing as of 2026 — check the site to confirm). The package includes a profit calculator and product page analysis, UPC barcode scanner, import of ASINs and UPCs, instant net payout and more. Features such as the ‘Find on Alibaba’ option and packaging, warranty and UPC information make ASINspector worth a look for serious Amazon FBA sellers. (When you’re ready to actually list those products, you’ll need valid UPC/EAN codes too — Barcodestalk sells GS1-authentic barcodes for that.) Marketplaces covered by ASINspector include the UK, USA, Canada, Mexico, Italy, France and Germany, giving more than decent coverage.
6. Helloprofit
Helloprofit.com is a one-stop Amazon business manager and features drill-downs for gross sales and profits, promo rebates and fees, as well as ROI and payment information. Sellers can take a free 21-day trial of HelloProfit, after which the Expert plan costs $97 per month. It can feel slightly slow and isn’t the cheapest option, and filtering is fairly limited. Plus points include fast, reliable customer support, and users say they’re impressed with the straightforward, easy-to-navigate dashboard. Supported markets are UK, USA and Canada.
7. Amachete
Big in Japan, Amachete.co’s profitability estimator is one of the few available for the Japanese marketplace, and it now supports Japan, Germany, the UK, Italy, India, Canada, Mexico, France and Spain. Amachete is a browser plugin that lets you calculate estimated sales straight from open Amazon pages. It’s offered as a free 10-day full-featured trial followed by a paid subscription (check the site for current pricing, as the older fixed Product Researcher / Active Seller / Empire Builder tiers have changed). Useful, though there are more sophisticated suites available at a similar price.
8. ZonGuru
AMZShark, which used to sit here, has narrowed its focus to review intelligence and no longer offers a sales estimator, so we’ve swapped in ZonGuru. ZonGuru is a full Amazon seller suite whose Sales Spy and product research tools show estimated monthly sales and revenue, the number of sellers on a listing, and review data — no manual keyword entry required. It’s a paid platform (with a free trial); check the site for current pricing and the marketplaces it supports.
9. AMZ Tracker
Sticking with the AMZ empire, AMZ Tracker — which can be compared with Jungle Scout — features a basic but effective Amazon sales estimator. Note that its estimator works best on top-selling products, so it may not suit every seller. AMZ Tracker covers 11 marketplaces with four pricing tiers: the $50 per month Basic plan, the $100 per month Professional plan, the $200 per month God plan, and the Legend plan at $400 per month (the last of which is pricey for what’s included).
As we said at the beginning of this article, there are no guarantees when it comes to sales and profits but, investment in a decent Amazon sales estimator will give you the data-based advantage and allow you to make an informed choice. If you want to go deeper than estimates alone, AMZBase curates seller tools and step-by-step playbooks across product research, keywords and profit to round out your toolkit.
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