I’m starting to optimize my Amazon product listings and realized I have no solid keyword strategy. Most of the tools I find are paid, have limited free trials, or don’t show enough data to be useful. Can anyone recommend a truly free (or very generous free tier) Amazon keyword research tool that actually helps with finding high-volume, relevant keywords for listings and PPC campaigns?
For pure free Amazon keyword research, here is what works best right now:
-
Amazon autocomplete
• Type your main keyword in the Amazon search bar and watch the suggestions.
• Add letters after it: “yoga mat a”, “yoga mat b” etc.
• Those phrases are based on real shopper searches.
• Put them into a sheet and sort by relevance to your product. -
Amazon “Frequently bought together” and “Customers also search for”
• Check your main competitors.
• Scroll their listings and note phrases on the page, Q&A, and reviews.
• Pull recurring words like “non slip”, “extra thick”, “for bad knees”.
• These help you find long tail keywords. -
Helium 10 free plan
• You get limited daily searches, but it is still useful.
• Use Magnet and Cerebro.
• Magnet for broad keyword ideas.
• Cerebro for reverse ASIN on your top 3 to 5 competitors.
• Export results, sort by search volume, remove junk.
• Use it a few days in a row to build a solid base list.
Tip: Create a second account if you hit the free cap too fast. Slightly sketchy, but people do it. -
Keywordtool.io (free Amazon tab)
• Paste your seed keyword.
• Use it for long tail ideas.
• Free version hides full volume numbers, but still gives phrase ideas you can cross check in Helium 10 or in Amazon autocomplete. -
Google Keyword Planner as a sanity check
• Not Amazon data, but still good to see if a term has any demand at all.
• Filter by your main country.
• If a keyword is dead on Google, often it is weak on Amazon too.
How I would build a free workflow for you:
Step 1
Make a list of 5 to 10 seed words that describe your product. Brand free. Simple. Example for “stainless steel water bottle”:
“metal water bottle”, “insulated water bottle”, “sports water bottle”, “kids water bottle”, “gym water bottle”.
Step 2
Run each seed through:
• Amazon autocomplete
• Helium 10 Magnet (free)
• Keywordtool.io Amazon tab
Dump everything into one sheet.
Step 3
Clean the sheet.
• Remove duplicates.
• Remove off topic terms.
• Keep a column for: main keyword, long tail phrase, notes.
Step 4
Reverse ASIN with Helium 10 Cerebro on 3 to 5 top competitors.
• Sort by search volume.
• Tag keywords:
– Main: in title.
– Secondary: bullet points.
– Long tail: description, A plus, backend search terms.
Step 5
Check your listing index over time using a free index checker or by searching “asin keyword” on Amazon and seeing if your listing appears.
If you want one single “best free tool”, I would say Helium 10 free plan plus Amazon autocomplete.
Everything else is support work.
You will not get perfect data for free, but you will get enough to build a solid keyword set and avoid guessing.
If you want to stay 100% free, I’d treat “best tool” as a stack, not a single app. I mostly agree with @nachtdromer, but I’d lean less on Helium 10 free and more on stuff that can’t be throttled or nerfed.
Here’s what’s actually worked for me:
1. Amazon Brand Analytics (if you have it)
If you’re Brand Registered and not using this, you’re leaving money on the table.
- Go to Brand Analytics → Search Query Performance
- You see actual Amazon shopper data: top queries, click share, conversion share
- Pull your top 50–100 queries and build your core keyword set from that
Free, straight from Amazon, and honestly more “real” than most third‑party guesses.
2. Search Query Performance on a product level
Once you have a few ASINs with traffic:
- Check which queries are already driving clicks
- Spot “near misses” where you get impressions but low clicks or low conversion
Those are golden for tweaking titles, main image, and bullets to match real phrases.
3. Keepa (free version) for competitor intel
People sleep on this for keywords:
- Install the Keepa extension, look at the “Data” → “Variations” tab on top competitors
- See which variations/colors/sizes are moving units
That tells you what attributes to emphasize in keywords: “32 oz”, “wide mouth”, “kids”, “leakproof” etc.
4. Chrome + manual scraping of competitor listings
Instead of just eyeballing listings:
- Copy the whole listing text from 5–10 top competitors (title, bullets, A+ if visible as text, reviews Q&A)
- Dump into a word frequency tool like wordcounter.net or any keyword density checker
- Filter out stop words and brand names
You get an objective list of repeated phrases competitors lean on, not just what you think matters.
5. Free alternatives to Helium 10 for volume sanity checks
I don’t fully love “use multiple fake accounts” like @nachtdromer suggested, it’s sort of a time sink. Instead:
- Use Helium 10’s free plan sparingly only to rank phrases by volume
- Cross‑check a few terms in:
- SellerApp free tools (limited, but usable)
- DataDive’s public tools when they open them
The idea is to validate directionally which phrases are big vs small, not chase exact numbers.
6. PPC as a keyword research tool
This is the one almost no “free tools” list talks about enough:
- Launch a low‑budget auto campaign and 1–2 broad campaigns
- After 1–2 weeks, download the search term report
- Sort by orders and CTR
Those are real buyer phrases that convert for your product. No third‑party tool beats that. Yes, you’re paying for clicks, but you’re also making sales, so imo this is more efficient than burning time hacking around limits.
7. Backend search term field + structured testing
Once you have a decent list:
- Put your highest‑potential but not-yet-used phrases in the backend search terms
- Every 2–3 weeks, rotate out the ones that don’t show indexing / traffic movement
Free, just discipline and a spreadsheet.
If you really want one single “best free thing”:
- For pure ideas: Amazon autocomplete
- For real data: Brand Analytics or PPC search term reports
Everything else, including Helium 10 free, is basically support data so you’re not flying blind.
I’d layer a few different “free” levers on top of what @nachtdromer and the other reply suggested, because relying only on Brand Analytics + Helium 10 light can get you trapped in the same keywords everyone else is chasing.
1. Use Amazon autocomplete at scale, not one by one
Everyone says “use autocomplete,” but they do it casually. Treat it like data:
- Open an incognito window
- Type your seed keyword: “stainless steel water bottle,” then “stainless steel water bottle a / b / c…”
- Collect the full phrase list into a spreadsheet
- Repeat with your main modifiers: “kids,” “insulated,” “wide mouth,” “gym,” etc.
Then cluster those phrases by intent: “kids,” “sports,” “office,” “large capacity.” That gives you angles the usual keyword tools gloss over, especially long tails.
2. Review mining, but systematic
The others touched listing text and Q&A. I’d push harder into reviews:
- Filter competitor listings by “Most recent” and “Critical”
- Copy recurring adjectives and problems: “handle breaks,” “too noisy,” “doesn’t fit cup holder”
- Turn them into keyword fragments: “fits cup holder,” “quiet motor,” “durable handle,” etc.
Many of those never show as “high volume” in Helium 10, but they influence CTR and conversion, which matters more than some estimated search count.
3. Free Google angle for Amazon
People underestimate Google for Amazon:
- Search your main product phrase on Google
- Scroll to “People also ask” and “Related searches”
- Note patterns and terms like “for toddlers,” “BPA free,” “dishwasher safe,” “spill proof”
A lot of shoppers hop from Google to Amazon using the same language. Those modifiers often make great bullet and backend terms.
4. Competitor titles as quick pattern recognition
Instead of heavy scraping:
- Grab the top 10 organic competitors for your main keyword
- Paste only the titles into a sheet
- Highlight words that appear in at least 3–4 titles: those are “table stakes” terms for relevance in your niche
If your title is missing 3–4 of those common denominators, you are making indexing harder than it needs to be.
5. Where I slightly disagree
I’m less bullish on relying heavily on free Helium 10 or similar volume numbers, even “directionally.” On tight free plans, you usually get a biased sample of keywords plus throttled data, which can push you to over-focus on the same head terms everyone else is chasing. I’d use those tools last, just to sanity check that your main seed terms are not totally obscure, instead of building your whole strategy around them.
6. Stack your data into roles
To keep it from getting messy, give each “free” source a clear job:
- Autocomplete & Google: idea generation and long tails
- Competitor titles / bullets: relevance & “must have” phrasing
- Reviews & Q&A: benefit / pain keywords that boost conversion
- Brand Analytics or PPC data (if/when you have it): reality check on what actually brings clicks and orders
That stack costs you time, not subscription fees, and it stays useful even if tools throttle or change pricing.
As for the product title you hinted at, treat it the same way:
Pros for “”:
- Can be structured to hit primary and secondary keywords without looking spammy
- Main place to get exact-match phrases for indexing
- Strong title can improve CTR on crowded SERPs
Cons for “”:
- Limited character space so stuffing too many modifiers can reduce readability
- Over-optimized titles can look low quality and hurt click trust
- Changing it too often can confuse returning visitors and mess with testing
In short, instead of hunting a single “best free Amazon keyword research tool,” build a lightweight system that uses Amazon’s own ecosystem plus your competitors’ language. Tools like Helium 10 free are then just an extra lens, not the foundation.