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Free Amazon Keyword Tool

Find keywords with real Amazon search volume across three marketplaces, and build your backend search terms inside Amazon's byte limit. No sign-up required.

How to do Amazon keyword research in 3 steps

This free Amazon keyword research tool returns genuine marketplace demand rather than an estimate borrowed from somewhere else, which is the part that decides whether the numbers are worth acting on.

1. Enter a product keyword

Type what your product is, in the words a shopper would use, then pick the marketplace you sell on. Three English-language Amazon marketplaces are supported.

2. See real Amazon search volume

Every keyword comes back with its actual monthly Amazon search volume for that marketplace. This is Amazon data, not Google volume relabelled.

3. Build your backend search terms

The tool assembles a deduplicated backend search terms string inside Amazon's 250 byte limit, skipping any word already in your listing title.

Why Amazon keyword search volume is different

Amazon search volume and Google search volume measure different behaviour, and confusing them leads to bad listings. Someone searching Google for a product category is often still researching. Someone typing the same words into Amazon has their wallet out. Purchase intent on Amazon is close to universal, which is why a modest Amazon volume can be worth far more than a large Google one.

The vocabulary differs too. Amazon shoppers search in product terms, with sizes, materials and use cases attached, while Google users ask questions. Optimising an Amazon listing against Google keyword data gives you a listing tuned for the wrong language.

Worth being explicit, because this space is full of tools that are not: the volumes on this page come from Amazon. Some free "Amazon keyword tools" show Google figures without saying so, and others show autocomplete suggestions with no volume at all and leave you to guess which matter.

Amazon backend keywords and the 250 byte limit

Backend search terms, which Amazon calls generic keywords, are the hidden field in Seller Central that helps your listing get found without showing anything to shoppers. Used well it is free reach. Used badly it is wasted space.

The rules that matter, and which the builder above follows for you:

250 bytes, not characters. A plain letter costs one byte, an accented character costs two, so non-English listings run out sooner than the character count suggests. Anything beyond the limit is ignored outright.
No commas. Spaces separate terms. Commas simply consume bytes for nothing.
Never repeat a word. Amazon indexes each word once. Repeating it across several phrases buys you nothing and costs you the bytes.
Skip words already in your title. They are already indexed. This is why the tool takes your listing title and excludes anything it already contains.

Researching across Amazon marketplaces

Demand does not translate between marketplaces, and the tool covers three so you can see the difference rather than assume it. The same product term is routinely an order of magnitude apart between Amazon.com and Amazon.co.uk, and the phrasing that wins often differs even where the volume looks similar.

Worth knowing how this works underneath, because it shapes what the numbers mean. Keyword discovery runs against the US index, which is the only one the underlying data source exposes for it. The terms it finds are then priced against the marketplace you select, so the volumes are genuinely that market's. That is also why only English-language stores are offered: discovery returns English terms, and pricing those against Amazon.de would measure English searches on a German store rather than German demand.

Frequently asked questions

Does Amazon have a keyword tool?

Not a public one. Amazon offers Brand Analytics with its Search Query Performance report, but that is limited to sellers enrolled in Brand Registry, and it reports on your own products rather than helping you research new terms. There is no Amazon equivalent of Google Keyword Planner open to everyone, which is why third-party tools like this one exist.

How to search Amazon keywords?

Start with the plain words a shopper would type, not your internal product name. Enter that seed above and the tool returns related terms with their real Amazon search volume, so you can see which phrasing actually gets searched. Amazon's own search bar autocomplete is a useful free sanity check alongside it, since those suggestions come from real queries.

What is the best keyword research tool for Amazon?

Helium 10, Jungle Scout and SellerApp are the established paid platforms, and they add rank tracking, competitor teardowns and profit estimates on top of keyword data. For keyword research alone, a free tool showing genuine Amazon volume covers most of what a smaller seller needs. Judge any tool by whether it tells you where its numbers come from, since several present Google volume as though it were Amazon data.

What is the best tool for keyword research on Amazon?

The same answer, and the honest version is that it depends on scale. There is no single best amazon keyword research tool for everyone. If you are optimising a handful of listings, this amazon keyword tool free of charge, plus Amazon's own autocomplete, will get you most of the way. If you are managing dozens of ASINs and need historical trends, competitor tracking and inventory signals in one place, a paid platform earns its cost.

What is a keyword research tool?

A keyword research tool takes a starting word and returns the related terms real people search for, usually with a volume figure showing how often. For Amazon specifically it matters that the volume comes from Amazon rather than Google, because shopping intent on Amazon looks very different from general web search. Someone googling "yoga" is often reading; someone searching "yoga mat" on Amazon is usually buying.

What are the most commonly used keywords on Amazon?

The highest volume terms are broad category words like the product type itself, and they are also the hardest to rank for and the least profitable to chase. A new listing does far better targeting specific multi-word phrases that describe exactly what it is. The volume column above makes the trade-off visible: the broad term has the traffic, the specific term has the realistic chance.

What are generic keywords on Amazon?

Generic keywords is Amazon's own name for the backend search terms field in Seller Central, the hidden keywords that help your listing get found without appearing on the page. They are not shown to shoppers and do not need to read as sentences. The tool above builds this field for you.

What is the maximum character limit for Amazon backend keywords?

250 bytes, and bytes rather than characters is the part that catches people out. In UTF-8 a plain English letter is one byte, but an accented character such as an umlaut is two, so a German or French listing hits the ceiling sooner than the character count suggests. Anything past 250 bytes is ignored entirely. The tool counts bytes and shows you the running total.

How to find good keywords for Amazon KDP?

KDP works the same way as any Amazon listing: you get seven keyword slots, and they behave like backend search terms. Research them exactly as above, with a seed describing your book's subject and reader rather than its title. This kdp keywords generator approach works because KDP searches run through the same Amazon search index, so the volume figures apply.

How to do keyword research for beginners?

Three steps, in order. Write down how a shopper would describe your product without using your brand name. Put those words in above and look at what comes back with real volume. Then split the results: the specific multi-word phrases go in your title and bullets where shoppers read them, and the leftover single words go in backend search terms where they still count but do not clutter the listing.

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