PPC Keyword Research for Amazon: 7 Steps + Tools (2026)

Your campaigns are only as good as the keywords inside them. You can nail your bid strategy, build the perfect campaign structure, and set a generous budget, but if you're targeting the wrong search terms, you're paying for clicks that never convert.

That's the frustrating reality for sellers who skip keyword research or treat it as a one-time task. Marcus, a supplements seller spending $8K/month on Amazon ads, couldn't figure out why his ACoS kept climbing past 35%. His campaigns had hundreds of keywords, but when he audited them, he found that 40% of his ad spend went to broad terms like "vitamins" and "health supplements," search terms where shoppers browsed but rarely bought his specific product.

After rebuilding his keyword list with the methods in this guide, Marcus cut his wasted spend by half and brought his ACoS down to 19% within six weeks.

PPC keyword research isn't about finding the most popular search terms. It's about finding the terms where your product is the right answer, at a cost per click your margins can carry. This guide shows how to do it on Amazon step by step: where to find keywords (including your competitors'), which free and paid tools to use, how to decide which terms deserve a bid, and how to deploy them.

Updated October 16, 2026. Rewritten as a 7-step process, with a new section on finding competitors' keywords, a comparison of Amazon's free keyword sources and paid tools (prices checked October 2026), a bid-ceiling worked example, Amazon's own thresholds for testing and negatives, and an FAQ.

What Is PPC Keyword Research?

PPC keyword research is the process of choosing which search terms to bid on in pay-per-click campaigns, and which to block. On Amazon, that means the keywords in your Sponsored Products and Sponsored Brands campaigns and your negative keyword lists. For every term, it answers three questions: is my product a good answer to this search, do enough shoppers use it, and can I afford the click?

Most guides to PPC keyword research are written for Google Ads. The goal is the same on Amazon, but the data sources differ:

How to Do Amazon PPC Keyword Research in 7 Steps

Most sellers pull keywords from one or two sources and call it done. That's a mistake. The best keyword lists combine several sources, each revealing search terms the others miss.

Step 1: Build a Seed List

Write 10–20 short, obvious phrases for your product before you open any tool: what it is ("garlic press", "garlic crusher"), what it's made of ("stainless steel garlic press"), what it's used for ("ginger press") and what problem it solves ("easy clean garlic press"). Seeds are inputs, not targets. The next steps expand them and tell you which ones are worth paying for.

Step 2: Expand It With Amazon's Search Bar

Open Amazon in an incognito browser window. Start typing your main product keyword and watch what Amazon suggests. These autocomplete suggestions come directly from real customer search behavior, showing you what people actually type. For a garlic press seller, typing "garlic press" might reveal:

• garlic press stainless steel
• garlic press dishwasher safe
• garlic press and mincer set
• garlic press heavy duty

Each suggestion is a potential keyword cluster. Go deeper by adding letters after your main keyword: "garlic press a", "garlic press b" and so on. Suggestions show what people type, not how often, so treat them as candidates until you have numbers.

Step 3: Pull Your Top Converting Keywords From the Search Term Report

This is the highest-value keyword source you have. In the Amazon Ads console, go to Measurement & Reporting → Sponsored ads reports, create a Sponsored Products report with the Search term report type, and download the last 60 days. Filter for search terms with orders and sort by sales. These are proven buyers. Look for:

• High-converting terms you haven't added as exact match keywords
• Long-tail phrases that convert at a lower ACoS than your broad targets
• Branded terms (yours or competitors') that drive sales

No data yet? Amazon recommends letting an automatic campaign run for about two weeks before creating a manual one. Auto campaigns show your ads on searches closely and loosely related to your product and on substitute and complementary product pages, and the search term report shows what they found. The campaign builder's recommended keywords, which come with suggested bids, are another free starting point. From then on, the report is an ongoing keyword research machine: this is the core of the auto-to-manual workflow. Our search term report walkthrough explains every column.

Step 4: Check Brand Analytics

If your brand is enrolled in Brand Registry and you have a Professional selling account, Brand Analytics gives you Amazon's own search data instead of estimates:

• Search Query Performance: for the searches that lead shoppers to your brand or ASINs, it shows search query volume plus impressions, clicks, cart adds and purchases, both the total for the query and your share of each (Amazon's report documentation), weekly, monthly or quarterly
• Top Search Terms: ranks search terms by search frequency and shows the three most-clicked products for each, with their click share and conversion share

Queries where shoppers already buy your product but you win a small share of impressions deserve their own exact match keyword and a stronger bid. Terms with a decent click share but a low purchase share usually point to listing, price or review problems rather than targeting. Our Brand Analytics guide walks through both dashboards.

Step 5: Find Your Competitors' Keywords

Your top competitors have already tested which search terms convert for products like yours. Reverse ASIN tools, sponsored placements and your own auto campaigns reveal those terms. There are six methods, so this step gets its own section below.

Step 6: Add Customer Language From Reviews and Q&A

Read your reviews and your competitors'. Customers describe what they searched for ("a garlic press that wouldn't break after a month"), how they name the product ("heavy duty garlic crusher") and which features matter ("easy to clean", "large capacity"). These phrases help you match the way customers actually search, not just how the industry labels your product.

Step 7: Size and Score the List With a Keyword Tool

A keyword research tool adds estimated search volume, related terms and seasonal trends to your list. Third-party volumes are estimates, not Amazon's counts, and tools can disagree, so use them to rank terms against each other and trust your own impressions and orders once you have them. And don't treat volume as the only factor: a keyword with 500 monthly searches and a 15% conversion rate is more valuable than one with 50,000 searches and a 0.5% conversion rate. Relevance beats volume every time. The main tools are compared further down.

How to Find Competitors' PPC Keywords on Amazon

Competitive PPC keyword research has two goals: find relevant search terms you're missing, and find the competitor products whose pages are worth advertising on.

1. Read Competitor Listings

Pull up the top 5–10 organic results for your main keyword. Title keywords are their highest-priority terms; bullet points hold secondary and feature-based terms. You won't see their backend search terms, but the common language patterns across listings show how the category describes itself.

2. Run a Reverse ASIN Lookup

A reverse ASIN lookup turns a competitor's product into a keyword list: you enter the ASIN, and the tool shows the search terms it ranks for organically and in sponsored results. Helium 10's Cerebro and Jungle Scout's Keyword Scout both do this; Keyword Scout can reverse-search up to 10 ASINs at once.

• Pick direct competitors: similar price, pack size, use case and review count, not just the category best seller
• Read organic and sponsored ranks separately: a strong organic rank means Amazon sees the product as relevant to the term; a sponsored rank may only mean someone is bidding or testing
• Prioritize overlap: terms several competitors rank for are the core terms of your niche
• Look for gaps: relevant terms where competitors rank and you don't are your quickest additions

3. Watch Who Holds the Sponsored Slots

Search your top keywords a few times over a week or two and note which brands appear in sponsored positions. A brand that shows up every time is paying for the term consistently; a single appearance is often a test. Your PPC competitors on a term aren't always your biggest organic ones.

4. Use Brand Analytics' Top Search Terms

Look up your main category terms in Top Search Terms to see which three products win the most clicks on each, with their click and conversion share. It shows who wins the sales on a term, and which terms are dominated by a single product.

5. Mine Your Auto Campaigns for Competitor ASINs

Auto campaigns also place your ads on other products' detail pages, and according to Amazon, ASINs that drive clicks or conversions appear in the search term column of your report. Those are products shoppers compare with yours. Move the ones that convert into a product targeting campaign; our ASIN targeting guide covers the setup.

6. Check Your Search Term Impression Share

The Sponsored Products search term impression share report shows the share of ad impressions you won on each search term and your rank among advertisers. In Amazon's example, a 20% share means you won 20% of all Sponsored Products impressions for that term on that date. A term that converts well for you but where competitors outrank you is a candidate for a higher bid.

Then put competitor keywords through the same filters as every other term: drop anything that describes a different size, feature or product, test the rest in exact and phrase match in a separate campaign with its own budget, and keep competitor brand names in their own campaign so you can judge them on their own numbers.

How to Evaluate and Prioritize Your Amazon PPC Keywords

You'll end up with a big list. Not every keyword deserves a spot in your campaigns. Run each one through these four filters.

Filter 1: Relevance

This is the most important filter and the one sellers most often skip. Ask: If someone searches this term, is my product a good answer? "Garlic press" works if you sell a garlic press. "Kitchen gadgets" probably doesn't: the shopper might want a can opener or a vegetable peeler, and your conversion rate will reflect the mismatch. Targeting loosely related high-volume terms feels productive but usually just inflates your ACoS. This is one of the most common reasons ACoS climbs too high.

Filter 2: Search Volume vs. Competition

Higher search volume means more potential impressions, but also more competition and typically higher CPCs. The sweet spot for most sellers is medium-volume, medium-competition keywords. Long-tail phrases, which Amazon defines as detailed phrases of three or more words, bring shoppers with clearer purchase intent, usually at a lower cost per click. A common rule of thumb:

• Head terms (1–2 words, high volume): 10–20% of your keywords. Accept higher CPCs for visibility.
• Mid-tail terms (2–3 words, medium volume): 30–40%. The workhorses of most campaigns.
• Long-tail terms (4+ words, lower volume): 40–50%. Lower CPCs, higher conversion rates.

Filter 3: Buyer Intent

"What is a garlic press" is informational. "Stainless steel garlic press dishwasher safe" is transactional: that person knows what they want. Prioritize product-specific descriptors, size, color and material modifiers, comparison phrases ("best garlic press 2026") and brand names. Your campaign structure should reflect these intent levels, with higher bids on high-intent keywords because they convert at higher rates.

Filter 4: Expected ACoS and Your Bid Ceiling

Before adding a keyword, estimate whether you can profitably target it. ACoS is ad spend divided by ad sales, and per click it breaks down like this:

Here's how that plays out for four candidate keywords for the same $25 garlic press at a 30% target ACoS. The CPCs and conversion rates are illustrative; use your own data or a tool's CPC estimate. For reference, Ad Badger's 2026 data from its users puts the all-category average at a $1.22 CPC and an 11.1% conversion rate.

The head term only pays off at a bid far below its going rate, which is why long-tail terms usually carry profitable campaigns, and the rocker isn't a keyword at all: it's a negative. Our free ACoS calculator works out your break-even and target ACoS, and your bid strategy turns these ceilings into bids for each keyword tier.

Match Types: How to Deploy Your Keywords

Finding keywords is half the job. Deploying them across the right match types determines how precisely your ads show up:

Think of match types as a funnel. Auto campaigns and broad match discover new keywords with a wide net and lower bids, phrase match validates patterns, and exact match maximizes proven winners. Over time, your best keywords graduate from broad to exact, which is where your search term harvesting workflow feeds its best performers. Be patient at each stage: Amazon suggests testing match types for at least 1–2 weeks before pausing any keywords.

The Search Term Harvesting Workflow

Keyword research isn't a one-time project. The most profitable Amazon PPC accounts treat it as a continuous process. Here's the weekly workflow (our keyword harvesting guide covers it in detail):

1. Pull your search term report. Download the last 7–14 days of data.
2. Identify winners. Filter for search terms with 2+ orders (or 1 order and strong CTR). These are candidates for promotion to exact match.
3. Add winners to manual campaigns. Create exact match keywords for proven converters. Set bids based on their historical ACoS.
4. Identify losers. Filter for search terms with 20+ clicks and zero orders, the point at which Amazon suggests judging a term.
5. Add losers as negative keywords. Block these terms from triggering your ads in the future.
6. Review and adjust. Check if newly promoted exact match keywords perform as expected. Adjust bids weekly based on results.

Sarah, who sells yoga accessories, runs this workflow every Monday morning. It takes her 30 minutes. In three months, she shifted 60% of her ad spend from broad match to exact match on proven winners. Her ACoS dropped from 28% to 16%.

Negative Keywords: The Other Half of Keyword Research

Most sellers focus entirely on finding keywords to target and ignore the keywords they should block. That's like filling a bucket while ignoring the holes in the bottom. Start with three categories:

• Irrelevant terms: Words that indicate the shopper wants something different. If you sell a manual garlic press, negate "electric", "automatic", "machine."
• Competitor brand names (selectively): If competitor brand searches consistently don't convert for you, negate them. Let data decide.
• Already-targeted terms: If you've promoted a search term to exact match in a dedicated campaign, negate it in your broad and phrase match campaigns. This prevents cannibalization.

Amazon's own guidance is to use phrase or exact match for negatives and to let new negatives run for two weeks or more before changing strategy. Use campaign-level negatives for terms irrelevant to everything in a campaign and ad group-level negatives for terms that work in one ad group but not another: in a "garlic tools" campaign, "rocker" is a negative in the press ad group, not at the campaign level. Review your lists monthly, too. A term you negated six months ago might be worth testing again. Our negative keywords guide covers the full process.

Best PPC Keyword Research Tools for Amazon

You can do solid PPC keyword research without paying for anything: Amazon's own sources give you real search terms, real orders and, for brand owners, real search volumes.

Amazon's Free Keyword Research Sources

Third-Party PPC Keyword Research Tools

Paid tools add what Amazon's free sources don't give every seller: reverse ASIN lookups and search volume estimates for any keyword. Prices were checked on each vendor's pricing page on October 16, 2026.

You don't need all of them. Start with Amazon's free sources and add one paid tool when you need volumes or competitor data you can't get otherwise. These tools find keywords; they don't manage the bids, harvesting and negatives that follow. For tools that do, see our comparison of the best Amazon PPC tools.

Doing It Yourself vs. Hiring a PPC Keyword Research Service

The first keyword list takes a few hours. Keeping it current takes a little time every week, indefinitely. That upkeep is what you're really deciding who should do:

• Do it yourself: free with Amazon's sources, plus a tool subscription if you need volumes. Works if you can protect a weekly slot for the harvesting workflow.
• Freelancer or agency: a keyword research service either delivers a one-time list or includes ongoing research in PPC management. Ask how often they'll harvest search terms and add negatives, not just how long the first list is.
• Automation software: harvests converting search terms and adds negatives continuously, so the research never goes stale. Our PPC automation guide compares the options.

5 Common Amazon PPC Keyword Research Mistakes

• Copying competitor keywords blindly. Their listing, price point, review count and features differ from yours. Judge every keyword on your own relevance and expected ACoS.
• Ignoring long-tail keywords. They bring shoppers who know what they want, often at a lower CPC, so their expected ACoS is easier to hit.
• Setting and forgetting. Search behavior changes seasonally and competitors come and go. If you haven't reviewed your search term reports in the last 30 days, you're running on stale data.
• Skipping negative keywords. Irrelevant search terms are usually the biggest leak in an account, and broad and auto campaigns keep finding new ones.
• Too many keywords per ad group. Spend concentrates on a few terms and the rest never collect enough data. Amazon suggests starting with 25–50 relevant keywords per ad group, one theme each; keep exact match groups for proven winners smaller still.

Frequently Asked Questions About PPC Keyword Research

How Do I Do PPC Keyword Research?

Start with a seed list, expand it with search suggestions, add terms that already convert from your search term report, and look at what competitors rank for. Then filter by relevance, intent and expected ACoS, launch the survivors across match types, and repeat the harvesting step every week.

What Is the Best PPC Keyword Research Tool for Amazon?

Your own search term report: it's free and shows real searches with real orders. Brand-registered sellers should add Brand Analytics' Search Query Performance. For volume estimates on any keyword and reverse ASIN lookups, Helium 10 (Cerebro), Jungle Scout (Keyword Scout) and Data Dive are common choices.

How Do I Find My Competitors' PPC Keywords?

Run a reverse ASIN lookup on 5–10 direct competitors and read their sponsored ranks separately from organic ones. Add what you see in sponsored slots, the most-clicked products in Top Search Terms, and the competitor ASINs your auto campaigns surface in the search term report.

How Many Keywords Should an Amazon PPC Ad Group Have?

Amazon suggests starting with 25–50 relevant keywords per ad group. Fewer is fine for exact match ad groups built from proven winners. What matters more is that every keyword shares one theme and gets enough clicks to judge.

Can I Use Google Keyword Planner for Amazon PPC?

Only for seed ideas. Keyword Planner reports Google searches, and people phrase searches differently in a store than on a search engine. For Amazon campaigns, rely on Amazon's own data and Amazon-specific tools.

How Often Should I Do PPC Keyword Research?

Build the full list once per product, harvest search terms weekly, and do a bigger review every month or quarter. Revisit seasonal keywords ahead of peaks: Amazon recommends adjusting them before, during and after events like Prime Day and Black Friday.

Put Your Keyword Research to Work

Amazon PPC keyword research is the foundation that every other optimization builds on. The right keywords feed your campaign structure, inform your bid strategy, and determine how efficiently you spend your ad budget. Here's your action plan:

• This week: Pull your search term report and run the harvesting workflow. Promote your top converters to exact match and negate your worst performers.
• This month: Work through the seven steps, including a reverse ASIN lookup on your closest competitors, and run every new term through the four filters before it gets a bid.
• Ongoing: Make keyword research a weekly habit. Thirty minutes every week compounds into a significant competitive advantage over sellers who set and forget.