When a shopper searches on Amazon, they already have something specific in mind. The keywords you bid on determine whether your product appears in that moment and whether that visit becomes a sale.
When you target keywords that reflect your product, your spend reaches shoppers with a genuine reason to buy. Bid on the wrong terms, and you pay for clicks that don’t convert, while also sending negative signals to Amazon’s algorithm.
This article walks you through how to research, select, and structure keywords for Amazon ads that drive consistent conversions.
Why Keywords Are the Foundation of Profitable Amazon Ads
The keywords you target decide which shoppers find your product and whether they buy it.
Here is why that matters for your bottom line:
- Reach shoppers who are ready to buy: Someone searching “non-slip silicone spatula set” knows exactly what they are looking for. Your product showing up for that search puts you in front of a buyer and increases the chances of a purchase.
- Reduce your cost per conversion: Long-tail keywords tend to have fewer sellers bidding on them. That means lower CPCs and higher conversion rates, which lowers your ACoS.
- Spend only on keywords worth paying for: Every irrelevant click that doesn’t turn into a sale costs you money. You need to know what those keywords are so your budget doesn’t run out before your best keywords get a chance to perform.
Keywords Match Types in Amazon Ads
Match types tell Amazon how much flexibility to give itself when matching your keyword to actual shopper searches.
Let’s look at what each keyword match type is designed for:
Broad Match
Broad match lets Amazon show your ad for variations, synonyms, and loosely related searches, even when the shopper’s exact search doesn’t include your keyword.
For example, if you sell a carbon steel chef knife and run broad match on “chef knife,” Amazon might show your ad to someone searching “high carbon kitchen knife,” “professional dicing tool,” or “Japanese-style kitchen blade.” Some of those will convert. The ones that do are candidates to move into more targeted match types and scale.
The catch is that Amazon’s definition of “broad” can stretch in directions you didn’t intend. Broad match might trigger your ad for queries totally unrelated to your product. So, as we’ll see later on, run broad match in dedicated campaigns with a capped budget.
Phrase Match
Phrase match lets Amazon show ads when the shopper’s search includes your keyword phrase in the same word order, with additional words before or after.
For a product like a garlic press, running phrase match on “garlic press” means your ad can show for “stainless steel garlic press,” “garlic press with cleaner,” and “easy grip garlic press.” These are all relevant search variations from buyers with clear intent. You’re capturing natural search behavior while excluding irrelevant results that a broad match would include.
But phrase match is sensitive to word order in ways that can catch you off guard. If a buyer types “press for garlic” or “garlic mincer press,” your ad won’t show, even though they’re looking for the same thing. Buyers don’t always type product phrases the way you’d expect, so it’s worth bidding on multiple phrase variations to cover the sequences that matter for your product.
Exact Match
With exact match, your ad only shows when a shopper types your keyword almost word for word. Close variants like plurals are included, but nothing beyond that. If your exact match keyword is “stainless steel garlic press,” your ad shows for “stainless steel garlic press.”
But it won’t show when a shopper searches for “best stainless steel garlic press” or “stainless steel garlic press with cleaner.”
It’s best to build your exact match list from your search term report, not from keyword tools. A keyword tool can tell you a term has search volume. Your search term report will show that a certain keyword generated sales and has a strong conversion rate. You can then move it to an exact match and give it an aggressive bid.
How to Choose the Best Keywords for Amazon Advertising
Most sellers start keyword research by opening a tool, typing in their main product keyword, and downloading whatever comes back. Well, that’s just a starting point.
Let’s look at three specific steps that will help you build a keyword list that actually converts:
Use Competitor ASINs to Build Your Keyword List
Reverse ASIN Lookups is a faster and more reliable starting point for generating keyword ideas than starting from scratch. The top organic listings in your niche have already proven which keywords drive consistent sales. Now, you only have to find out what those keywords are.
Using Amazon PPC keyword research software can help with this. Pull the top three organic listings for your main keyword, run their ASINs through a reverse ASIN lookup, and filter for organic keywords only.
Then narrow your list to terms that appear across at least two of the three ASINs. The results are the keywords that the top sellers are already ranking for.
That said, not every keyword that works for a market leader will work for a newer listing at the same cost. Focus on terms where your listing can genuinely compete based on your current review count, pricing, and listing quality.
Find Long-Tail Keywords to Reach High-Intent Buyers
Reverse ASIN research gives you the keywords your competitors rank for. But it doesn’t always surface the way buyers actually describe their problem in the search bar. This is where long tail keywords come in.
These are multi-word phrases that signal a buyer is close to a purchase decision. Someone searching for “yoga mat” is browsing. Someone searching for “non-slip yoga mat 6mm” already knows what they want.
The simplest way to find these terms is already built into Amazon. Type your main keyword into the search bar, add a space, and note every autocomplete suggestion that appears. These are real searches shoppers are making right now. You can also run your main keyword phrase directly through keyword tools to surface additional related terms that the ASIN lookup may have missed.
Filter Your Keyword List by Conversion Potential
Once you’ve built your list, filter it to find keywords that would bring in the most sales. Search volume tells you how many people typed a keyword. But it tells you nothing about how many of them bought something.
Use a keyword research tool that shows conversion data alongside search volume. The best approach is to build your campaigns on high-converting niche terms first, then expand into higher-volume keywords as your listing’s authority grows.
Keyword research at this level takes time, and without the right process, high-spend, low-converting terms can quietly drain your budget. IG PPC offers hands-on and personalized PPC management from keyword discovery to campaign optimization.
Book a free Amazon PPC audit to see exactly where your campaigns stand.
How to Structure Your Amazon Ads Keyword Campaigns
Your keyword list gives you a strong foundation. But how you build your campaigns around it determines what you actually get out of them.
Here is how to set it up:
- Use auto and broad match campaigns for discovery: These cast a wide net and show you which search terms are actually converting. Keep the budget capped because broader targeting might pull in searches you didn’t intend to bid on.
- Move proven keywords to phrase match: Once a search term converts consistently, move it into a phrase match campaign. You stay visible for relevant variations without the noise of broad match.
- Promote top performers to exact match: When a keyword meets your target ACoS in phrase match, move it to a dedicated exact match campaign with its own Amazon PPC ad budget and a direct bid you can scale.
- Negate keywords as you promote them: Each time you move a keyword to a more targeted campaign, add it as a negative in the campaign it came from. This stops your own campaigns from competing against each other in the same auction.
- Keep each match type in its own campaign: Running different match types in the same campaign mixes their data and makes it impossible to measure performance clearly. Separate campaigns mean you always know what’s working.
Common Keyword Mistakes That Drain Your Ad Budget
Even sellers who understand keywords, match types, and campaign structure may make decisions that quietly drain their budgets.
Here are some common Amazon ad keyword mistakes:
Ignoring the Search Term Report
Your search term report shows you the exact phrases customers typed when they triggered your ad. However, most sellers don’t review it regularly, and they miss two important actions: adding high-converting search terms to exact match campaigns and blocking irrelevant ones.
Without that ongoing review, irrelevant searches keep triggering your ads unchecked. Your spend will increase, and your conversion rate will drop. Over time, Amazon starts associating your listing with searches it doesn’t convert on. This works against both your PPC performance and your organic ranking.
Review the report weekly. Add converting terms to exact match campaigns, and move non-converting terms with significant spend to your negative keyword list.
Targeting Keywords Your Listing Can’t Support Yet
Sometimes a keyword is relevant to your product. But your listing isn’t in a position to convert on it yet. If a shopper searches “premium handmade leather wallet” and lands on a listing with stock photos and a handful of reviews, the mismatch between the keyword’s promise and the listing’s credibility is enough to lose the sale.
Every click on a keyword your listing can’t back up is money spent on a conversion that was never going to happen. A consistently low conversion rate on those terms also signals to Amazon that your product isn’t a strong match. This can hurt your ranking for terms you would otherwise compete well on.
Before adding any keyword to a campaign, search that term and compare the top listings to yours. If there’s a significant gap in image quality, review count, or copy depth, hold off until your listing can compete.
Leaving Converting Keywords in Auto Campaigns
The problem is that auto campaigns don’t give you keyword-level bid control. You can adjust bids by targeting match types, but you can’t allocate additional budget to a specific search term that’s performing well.
That means your best-performing keywords share a budget with weaker ones and get the same treatment regardless of how they convert. You end up leaving profitable growth on the table because there’s no way to prioritize what’s actually working.
When a search term converts consistently in an auto campaign, move it to a manual exact match campaign where you can set a dedicated bid and scale it on its own terms.
Frequently Asked Questions (FAQs)
Here are some of the most common questions sellers ask:
What Are Negative Keywords in Amazon Ads?
Negative keywords are terms you add to your campaigns to prevent Amazon from showing your ad for irrelevant searches.
When you add a term as a negative, Amazon excludes your listing from any action triggered by that search, which means you stop paying for clicks that were never going to convert.
What Is a Good Keyword Conversion Rate for Amazon Ads?
A conversion rate above 10% is generally considered solid for Amazon PPC, and anything above 20% is strong.
But the benchmark that actually matters is specific to your category, because conversion rates vary by product type, price point, and the competitiveness of the niche.
How Many Keywords Should I Target in an Amazon Ad Campaign?
A practical starting point is 5 to 10 tightly related keywords per ad group, with separate ad groups for different keyword themes.
Start focused, let the data tell you what’s working, and expand from there rather than trying to cover everything from day one.
How Long Does It Take to Know If a Keyword Is Profitable?
Most keywords need at least 7 to 14 days of data before you can draw reliable conclusions.
Give keywords time to accumulate meaningful data before you cut, reduce, or scale them.
Conclusion
Choosing the right keywords for Amazon Ads takes more than just picking high-volume terms. Start by building your list from proven competitor data, prioritizing high-intent long-tail terms, and structuring your campaigns so your best keywords get the budget and bid control they need to scale.
When those pieces are in place, your ACoS improves, your conversion rates increase, and your listings build the ranking signals needed for long-term organic growth.
Executing all of this consistently is where most sellers start losing ground. IG PPC has a proven track record of delivering rapid, measurable improvements in Amazon PPC performance. Book a consultation to get started.
