7 Best Amazon Keyword Tools in 2026 (Free and Paid)

TL;DR: The best Amazon keyword tool is the one built for what you sell. Private label FBA sellers get search volume estimates and reverse ASIN lookups from Helium 10 or Jungle Scout, or from SellerSprite at a lower monthly price. Merch on Demand sellers are better served by Merch Informer, Merch Titans' free estimator or Trendlytic, which we built. If all you need is the list of phrases Amazon's search box suggests, Keyword Tool and our own free Amazon keyword tool cost nothing.

Amazon only shows a shopper the listings whose words fit the search. Pick the wrong phrases and a good product sits on page nine, however strong its photos are.

The catch is that "Amazon keyword tool" covers very different products. Some pull the search terms behind a competitor's ASIN, some estimate how often a phrase is searched, some just collect Amazon's autocomplete, and a few are made for shirt designers on Merch on Demand. A private label seller and a Merch designer rarely need the same one.

So I grouped these seven by the seller each one suits. Every price comes from the company's own pricing page, read on November 11, 2026, and every feature from its own site. One disclosure: Trendlytic, number one, is my product. It sits first because this is my site, not because it fits every seller, and its weaknesses are listed too.

Best Amazon keyword tools compared

Amazon does not publish keyword search volume for the public, so each "Yes" above is that tool's own estimate. Compare phrases inside one tool, not one tool's figure against another's.

1. Trendlytic: best for print-on-demand shirts on Amazon

Marketplaces: Amazon US, with Etsy, Redbubble and TeePublic in the same product.

Pricing: Starter is $19.99 a month, Pro $49.99 and Business $99.99, each after a 3-day trial that needs a card for a $1 check. There is no free plan.

What's unique: The FBA suites below revolve around a product you already sell. Trendlytic begins earlier, with a niche idea, and it is made for printed products, mostly shirts. Choose Amazon US in Keyword Research and it reads the phrases used by the best-selling shirts for that niche, adds what Amazon's search box proposes to shoppers, and shows how many competing results sit behind each phrase.

"Rising" marks the new designs that are already selling, so you can tell the niche is still open. An AI listing generator takes a design that sells and drafts a listing for a design of your own. Before a phrase reaches your title, a one-click USPTO lookup checks it (a first check, not legal advice). More on our Amazon keyword research tool and Amazon Merch keyword research pages.

Strengths:

• Works from a niche word, before you have a product or an ASIN.
• A competing-results count from Amazon US on every phrase.
• Etsy, Redbubble and TeePublic too, for a design that goes on more than one marketplace.

Weaknesses:

• No Amazon search-volume numbers, which every paid suite below estimates.
• No reverse ASIN lookup and no rank tracking.
• It reads printed products such as shirts, not every Amazon category. Selling kitchenware or supplements? Look at the next three tools.
• Newer and much smaller than the suites below.

Best for: Merch on Demand and print-on-demand shirt sellers deciding which phrases still leave room for a new design. Try Trendlytic for 3 days, or start with our free Amazon keyword tool.

2. Helium 10: best for reverse ASIN research on private label products

Marketplaces: Amazon, and Walmart according to its Magnet page.

Pricing: Platinum is $129 a month, or $99 a month billed yearly. Diamond is $359 a month, or $279 billed yearly. Enterprise starts at $1,499 a month, billed annually (helium10.com/pricing, November 2026). Its FAQ mentions a Free plan without listing limits; no trial is named.

What's unique: Cerebro is the centre of its keyword work. Give it a competitor's ASIN and it lists the search terms sending shoppers to that listing; put up to 10 ASINs side by side to compare overlapping keywords, organic rank and search volume. Magnet runs the other way, turning a seed term or an ASIN into hundreds of related phrases, with a free search box on its page.

Strengths:

• Reverse ASIN on up to 10 competitors side by side, with organic rank.
• Search volume as a filter, plus the monthly sales its pricing page says it attributes to each keyword.
• Rank tracking in the same account.

Weaknesses:

• The highest entry price on this list: $99 a month even paid yearly.
• The pricing page does not say how many Cerebro or Magnet searches a plan allows.
• Most of its value assumes a live product with competitors worth studying.

Best for: private label sellers with products already on Amazon who want to learn from competitors' keywords and follow their own ranks.

3. Jungle Scout: best for a first all-in-one FBA suite

Marketplaces: Amazon, every marketplace worldwide according to the Keyword Scout page.

Pricing: Starter is $49 a month, or $29 a month billed yearly ($348). Growth Accelerator is $79, or $49 billed yearly ($588). Brand Owner + CI is $149, or $129 billed yearly ($1,548) (junglescout.com/pricing/catalyst-plans, November 2026). No free trial; standard plans carry a 7-day money-back guarantee.

What's unique: Keyword Scout shows exact and broad match search volume, cost per click for search ads, and up to two years of history. It reverse-searches up to 10 ASINs, organic and sponsored keywords side by side. Starter allows 50 Keyword Scout searches a month with one month of history; Growth Accelerator raises that to 250 searches, a year of history and 500 tracked keywords.

Strengths:

• The cheaper of the two big suites when paid yearly.
• Search volume, ad costs and reverse ASIN in a single tool.
• Limits per plan written out on the pricing page.

Weaknesses:

• 50 searches a month on Starter goes fast once you research seriously.
• Rank tracking, search trends and keyword export start on Growth Accelerator.
• No trial, only the 7-day refund window.

Best for: newer FBA sellers picking a first product who want product and keyword research in one subscription. Still at the idea stage? Our list of the best selling items on Amazon is a place to start.

4. SellerSprite: best for reverse ASIN on a smaller budget

Marketplaces: Amazon. The pricing page does not say which marketplaces each plan covers.

Pricing: Basic is $39 a month or $390 a year, shown beside a crossed-out $49 and $468. Standard is $79 a month, Advanced $129 and VIP $189 (sellersprite.com/en/price, November 2026). The monthly plan has a free 3-day trial, and its homepage says the trial does not ask for a card.

What's unique: SellerSprite does the reverse ASIN and keyword work of the big suites for less: its pricing table lists Reverse ASIN, Keyword Research and Keyword Mining as unlimited, meaning no daily cap. Keyword Mining expands a seed phrase or finds the terms bringing traffic to the same sub-market. A free Chrome and Edge extension carries, by SellerSprite's count, 80% of the web app onto Amazon's pages.

Strengths:

• Reverse ASIN with no daily cap from the Basic plan up.
• A trial before you pay, plus a free extension.
• Free extras such as a sales estimator and a profitability calculator.

Weaknesses:

• Keyword tracking is 0 on monthly Basic and 250 on yearly Basic.
• Marketplace coverage per plan is not stated.
• No free plan after the trial; the free tools are calculators and checkers, not keyword research.

Best for: budget-minded FBA sellers who want competitor keyword data daily without counting searches.

5. Merch Informer: best for Merch on Demand at the lowest paid price

Marketplaces: Merch by Amazon, with a Social Hunter search of Etsy and Pinterest for ideas.

Pricing: Newbie is $9.99 a month, or $8.32 a month billed yearly. Professional is $19.99 a month, or $16.65 billed yearly (merchinformer.com/pricing, November 2026). Both offer a free trial of unstated length.

What's unique: Merch Informer is built around one program, Merch by Amazon. Its homepage sets keyword research beside product research, trademark protection and a designer, and promises real Amazon search volume data. A listing optimizer with Synonym Suggest helps you fit more phrases into the few fields a Merch listing allows, and Data Archives show which designs led on past dates, handy for planning a holiday niche.

Strengths:

• The lowest paid price on this list.
• Made for Merch, so the keyword work fits a short Merch listing.
• Historical archives for seasonal planning.

Weaknesses:

• The pages I read do not pitch it to FBA or KDP sellers.
• Trademark tracking stops at 50 terms on Newbie (8,000 on Professional).
• The trial length is not given on the pricing page.

Best for: Merch on Demand sellers who want a dedicated toolkit at a small monthly cost. New to the program? Our Merch by Amazon guide explains how it works.

6. Merch Titans: best for a free volume estimate on a shirt niche

Marketplaces: Amazon, for the free keyword tool. The paid app uploads to Amazon Merch, Redbubble and TeePublic, and to more stores through Printify and Printful.

Pricing: The Amazon keyword tool is free. The paid All Access Pass, an upload app, is $39.99 a month or $359.91 a year, with a Black Friday discount until November 30 (merchtitans.com/pricing, November 2026). No trial on the paid plan; a 14-day money-back guarantee instead.

What's unique: Merch Titans earns its money from upload automation, and its free Amazon keyword tool is a side entrance. Type a niche (its examples include dog mom and fishing shirt) and it returns related searches with an estimated search volume, a competition level, an estimated cost per click and a recent trend. The top 5 show right away; confirming your email unlocks the rest, with no card or password.

Strengths:

• Free volume estimates, which Keyword Tool's free version and our free tool do not give.
• Shirt-minded examples that suit print-on-demand sellers.
• The page says plainly that its volumes are estimates.

Weaknesses:

• Only 5 results until you give an email.
• The page does not say where the estimates come from.
• The paid product is an uploader, not deeper keyword research.

Best for: shirt sellers who want a rough volume figure before deciding whether a niche deserves a design.

7. Keyword Tool: best for Amazon suggestions with no login

Marketplaces: Amazon is one of 17 platforms it covers, alongside Google, YouTube, eBay and others.

Pricing: The free version works without an account. Pro starts at $88 a month, or $68 a month billed yearly, and reaches $788 a month for Agency (keywordtool.io/pro, November 2026). No trial; a 30-day money-back guarantee instead.

What's unique: On Amazon, Keyword Tool does one job. It types your word into Amazon's search box, adds letters and numbers after it, and gathers every ending Amazon offers. You can set a department, a country and a language. Pro adds search volume estimated from clickstream data, 12 months of trends, bulk lookups and export.

Strengths:

• Free suggestions with no login.
• Department, country and language filters.
• One subscription for Amazon plus 16 other platforms.

Weaknesses:

• No search volume without Pro, which starts above Jungle Scout's and SellerSprite's entry plans.
• Nothing about reverse ASIN lookups on its Amazon page.
• Suggestions show what shoppers begin typing, not which phrases lead to sales.

Best for: sellers who want real shopper phrases for a title, bullets or backend search terms, and KDP authors brainstorming book keywords.

How to choose an Amazon keyword tool

Start from what you sell, then test one tool on a listing you are writing this week, not on a demo keyword.

• FBA private label: reverse ASIN lookups matter most, because competitors have already tested their keywords for you. Helium 10 if the budget allows, Jungle Scout for a first year, SellerSprite for less.
• Tight budgets: pair one free suggestion tool with at most one paid plan, such as Jungle Scout Starter at $29 a month paid yearly or SellerSprite Basic at $39. A second paid keyword tool rarely earns its fee.
• Merch on Demand: the question is less "how many searches" and more "which phrases leave room for one more shirt". Merch Informer covers the program from $9.99. Trendlytic starts from a niche, counts the competing results behind each phrase and checks your chosen phrase against the USPTO register. Merch Titans' free tool adds a volume estimate.
• KDP: none of these tools promotes a book-specific keyword feature on the pages I read. Begin with suggestions, then judge competition from the results themselves.
• Suggestions only: Keyword Tool's free version or our free Amazon keyword tool. For a wider picture of shopper demand, see the most searched keywords on Amazon.

Whatever you pick, a volume estimate cannot tell you who already owns a phrase. Before you spend money or design time, look at what sells for that phrase today and how crowded it is. By hand, across a whole niche, that takes hours; for shirts, that slow step is what Trendlytic does for you.

FAQ

What is the best Amazon keyword tool?

No one tool wins for every seller. For private label FBA, the two full suites are Helium 10 and Jungle Scout (the cheaper of the pair), with SellerSprite as the budget pick. For Merch on Demand, Merch Informer and Trendlytic (ours) are built around shirts. For suggestions only, Keyword Tool's free version is enough.

Is there a free Amazon keyword tool?

Yes. Our free Amazon keyword tool lists what Amazon's search box suggests for any product, a to z, with no login and 10 lookups a day; it shows suggestions, not search volume. Keyword Tool's free Amazon search needs no account either, and Merch Titans shows 5 results with volume estimates before asking for an email. For Merch shirts, our Amazon Merch keyword generator costs nothing too.

Does Amazon show search volume?

Not to the public. Amazon does not publish how often a phrase is searched, so every search volume figure in an outside tool is that tool's estimate, and different tools rarely agree. What Amazon does show on each product page is the Best Sellers Rank, a sales signal rather than a search one; see what Amazon BSR means.

What is a reverse ASIN lookup?

You enter a competitor's ASIN, the product ID Amazon assigns, and the tool lists the search terms that product appears for. Helium 10's Cerebro, Jungle Scout's Keyword Scout and SellerSprite all offer one. Trendlytic does not, and I found none on the Merch Informer or Keyword Tool pages I read.

Which Amazon keyword tool is best for Merch by Amazon?

Merch Informer is the dedicated Merch toolkit on this list, from $9.99 a month. Trendlytic, which we built, suits Merch sellers who start from a niche and want the competing results behind each phrase, plus a USPTO lookup before a phrase goes in a title. The FBA suites can read shirt listings too, at a higher price.

Can I use an Amazon keyword tool for KDP?

Yes, for phrase ideas. Amazon's search box completes book searches like any other, so Keyword Tool or our free Amazon keyword tool help with titles and subtitles. Then search each phrase in the Kindle Store to see the competition.

Conclusion

The right Amazon keyword tool depends on how you sell. FBA sellers with live products should pay for reverse ASIN data, sellers who only need phrase ideas can stay free, and Merch sellers need to know which phrases still have room.

Shirt sellers on Merch are who I made Trendlytic for. Pricing starts at $19.99/month for 100 searches, which return about 2,000 Amazon US keywords with their competition counts, plus the 1,000 top designs in Best Design Instant, re-ranked every hour. A card is needed for the 3-day trial, which runs a $1 check. Run a search on your next shirt niche.

When you research Amazon keywords, where do you start: a competitor's ASIN, a search volume figure, or what Amazon's search box suggests?