Keyword Research with Google Keyword Planner: The Complete Guide for 2026

Google Keyword Planner is Google's free tool that lets you look up search volumes, competition levels and bid estimates for specific keywords, based directly on Google search data. Thorough keyword research with Google Keyword Planner forms the foundation of every profitable Google Ads campaign: without the right keywords you reach the wrong people, overpay per click, or miss the most valuable searches entirely.

Key takeaways

• Google Keyword Planner provides search volume, competition and CPC estimates drawn directly from Google search data.
• Effective keyword research combines search intent, match types (exact match, phrase match, broad match) and negative keywords.
• The tool is free via any Google Ads account, even without active campaigns.
• AI-driven keyword research goes further: continuous monitoring and automatic detection of new opportunities improve campaign performance structurally.
• AdBrains automates the entire keyword process, from research to daily optimisation, using proprietary AI technology.

What is Google Keyword Planner and when do you use it?

Google Keyword Planner is a free planning tool inside Google Ads that helps advertisers discover keywords, check search volumes and request CPC estimates. It was originally built as a preparation tool for Search campaigns, but has become essential for any advertiser who takes keyword research seriously.

You use Google Keyword Planner for three core activities. First: generating keyword ideas based on a website URL, a product, service or existing search term. Second: analysing search volumes and trends to determine how many people search for a term each month. Third: reviewing CPC estimates so you know what a click costs on average in your market, which feeds directly into your budget planning and bidding strategy.

The tool is free for anyone with a Google Ads account. Without active campaigns, Google Keyword Planner shows volumes in broad ranges (e.g. "1,000-10,000"). Once a campaign goes live, you see exact monthly search volumes. That makes it worthwhile to run even a small test campaign if you need precise data.

How to use Google Keyword Planner effectively in 2026

Google Keyword Planner sits in your Google Ads account under the "Tools" menu. There are two main functions: "Discover new keywords" and "Get search volume and forecasts". Below are the steps for effective use.

1. Go to Tools in Google Ads and click "Keyword Planner".
2. Choose "Discover new keywords" and enter one or more seed keywords, or paste the URL of your landing page.
3. Set the right language and location. Targeting the Netherlands in Dutch? Set "nl" and "Netherlands". This has a significant impact on the volumes you see.
4. Analyse the results: look at average monthly search volume, competition level (low/medium/high) and the CPC range (top of page bid, low and high).
5. Filter on competition and volume to find keywords that fit your budget and goals.
6. Export the list to a spreadsheet for further analysis, or add keywords directly to an ad plan inside the tool.
7. Repeat from multiple seed keywords and URLs to avoid blind spots.

A common mistake is using Google Keyword Planner once at campaign launch and never returning. Search behaviour shifts constantly: new products, seasonal trends and competitors mean the keyword landscape changes every month. Ignoring this results in missed opportunities or wasted budget on irrelevant queries.

Manual keyword research vs. AI-driven keyword research

What structurally differs between both approaches?

Manual

• One-off or periodic keyword research
• Limited to what you think of yourself
• Negative keywords added manually
• No automatic detection of new opportunities
• Time-intensive: hours per week per account
• Dependent on human insight and memory

AdBrains AIAdBrains AI

• Daily automated search term analysis
• AI proactively detects growing keywords
• Automatic addition of negative keywords
• Keyword Incubator safely tests new keywords
• Continuously active without extra time investment
• Multi-agent verification prevents errors

Search intent: the difference between a click and a conversion

Search volume tells you how many people are searching. Search intent tells you what those people actually want to do when they get there. Google Keyword Planner only gives you indirect signals about the latter, yet it's arguably the more useful of the two pieces of information.

Intent tends to show itself in how a query is phrased. Informational queries like "how does a heat pump work" rarely lead straight to a purchase or an enquiry. Navigational queries, typically a brand name or a URL, exist because the user already knows where they want to go. Commercial queries such as "best electric folding bike comparison" place someone in the consideration phase: they're weighing options, not yet committing. Transactional queries, "buy electric folding bike" or "air conditioning installer quote", are from people ready to act. Comparing long tail vs short tail keywords also reveals intent: longer, more specific phrases tend to carry higher purchase intent and convert better, even though their search volume is lower.

Search intent distribution: what do users really search for?

Guideline for keyword categorisation by intent type

Informational (e.g. 'what is...')

48%

Navigational (brand/URL)

19%

Commercial (compare/explore)

21%

Transactional (buy/request)

12%

For e-commerce clients like E-4motion.com, the webshop for new electric folding bikes, transactional and commercial keywords are where the value sits. Someone searching "buy electric folding bike" is a far stronger prospect than someone asking "how does a folding bike work." Lead generation clients work the same way. For Clima-Active.nl, a term like "heat pump installer quote" or "air conditioning request" carries real commercial weight, whereas "benefits of a heat pump" is informational and rarely produces an immediate enquiry. One practical shortcut inside Google Keyword Planner: look at CPC. Transactional keywords tend to attract higher bids because advertisers know those searchers are close to making a decision, and that willingness to pay is a reliable proxy for intent.

Match types: how wide do you cast the net?

Match types determine which searches your keyword triggers. Google Keyword Planner shows volumes based on the keyword as entered, but in practice the chosen match type determines which actual search terms trigger your ad. This is critical for translating research into campaign settings.

Broad match is more powerful than ever in 2026 thanks to Google's improved language models (per Google Ads Help, 2026), but also demands the most active management. Without a tight system of negative keywords and daily search term mining, a significant portion of your budget flows to queries that never convert. Exact match gives you maximum control but limits reach enough that you miss opportunities you would never have anticipated during keyword research.

Negative keywords: the underestimated half of keyword research

Negative keywords are the search terms for which your ad must not appear. They deserve the same attention as your positive keyword list, though in practice they rarely get it.

Good reasons to add a search term as a negative keyword:

• The query contains words signalling free, DIY or informational intent when you sell a paid product.
• The query refers to a competitor or a different industry that happens to use the same terminology.
• Historical campaign data shows a term consistently clicks but never converts.
• The query has a geographic profile that does not match your target area.

Take ToetsJeKennis.nl, an online platform for exams and courses. Negative keywords like "free practice tests" or "exam answers" are obvious candidates here. That kind of traffic has no intention of paying for a course, so letting those clicks through is simply burning budget. Blocking them upfront raises Quality Score and pushes down the average CPC across the account.

How AdBrains AI handles keyword research continuously

Google Keyword Planner is a solid starting point, but it captures a single moment. The real work starts once a campaign is live: which search terms actually trigger your ads, which ones convert, and which just drain budget? That's where AdBrains AI comes in.

AdBrains built an automated search term mining system that goes through all active search terms in an account every day. Each term is assessed on relevance, conversion potential and overlap with keywords already in use. Terms that don't belong are flagged automatically and added as negatives, no manual review required. The system runs around the clock, weekends included.

On top of that sits the Keyword Incubator. New keywords the AI surfaces, whether through Planner data or search term analysis, don't go straight into the main campaign. They land first in a separate incubator campaign, where they're tested against real conversion data. A keyword only gets moved to the production campaign once it has actually demonstrated results. That way a new term can't skew the bidding strategy or pull budget from keywords that are already performing before it has proved its worth.

For Clima-Active.nl's lead generation campaigns this means terms like "hybrid heat pump quote" or "air conditioning installer [city]" are tested in a controlled environment before they start influencing Smart Bidding. The keyword base grows on the back of actual data rather than assumptions.

AdBrains' multi-agent verification system is part of this process too. Before any decision to add, pause or negatively match a keyword is executed, four independent AI agents each review it. Manual management produces this type of error regularly: a single misplaced negative can take down an entire campaign. The verification layer prevents that structurally.

AdBrains also connects keyword data to server-side signal enrichment through its own sGTM infrastructure. Conversion signals are enriched with first-party data, giving Smart Bidding a much clearer picture of which keywords and intent types produce conversions that actually matter. The bidding strategy progressively steers toward the terms that drive real revenue, working from richer signals than standard conversion tracking can provide.

From search term to conversion: keyword research funnel

Example: e-commerce campaign with 10,000 monthly impressions

Impressions

All searches triggering your keywords

Clicks (CTR)

Average CTR for Search ads

Landing page visits

After bounce and load error deduction

Conversions

Average e-commerce conversion rate

Better keyword selection improves quality at every stage

From Keyword Planner to campaign structure: the right steps

Keyword research does not end with a list of keywords. How you translate that research into a campaign structure is what determines whether the work actually pays off. One of the most common mistakes is dumping all found keywords into a single ad group. The result: low Quality Scores and CPCs that creep up faster than they should.

Group keywords by theme and search intent. Transactional keywords for "buy electric folding bike" have no business sharing an ad group with informational queries like "electric folding bike range". For each ad group, write a Responsive Search Ad (RSA) with headlines and descriptions that match the keywords in that group as closely as possible. When the keyword, the ad text and the landing page all point in the same direction, Quality Score goes up and Google charges you less per click.

For E-4motion.com, the webshop for new electric folding bikes, that might look something like this: one ad group for "buy folding bike", a separate one for specific model names, and another for use-case searches like "electric bike for public transport". Each gets its own RSA and its own set of negative keywords at the ad group level.

Keyword research for e-commerce versus lead generation: what differs?

The approach to keyword research differs meaningfully depending on your business model. In e-commerce, such as with ToetsJeKennis.nl, you target product-specific terms with clear transactional intent. Keywords are concrete ("buy online food safety course"), conversion value is directly measurable through AOV, and ROAS is the primary steering metric. Negative keywords focus heavily on informational and free-related queries.

Lead generation works differently. Clima-Active.nl wants quote requests, where a conversion is not a purchase but a completed contact form or a phone call. Valuable keywords here are service-related and location-aware: "air conditioning installer Amsterdam", "heat pump quote request", "split airco installation price". CPA is the primary steering variable, and the negative keyword list must be especially sharp because some informational searchers do click but never call.

Frequently asked questions about Google Keyword Planner

Is Google Keyword Planner really free?

Yes, Google Keyword Planner is free for anyone with a Google Ads account. You do not need an active campaign or minimum budget to access the tool. The only difference: without active ad spend, Google shows search volumes in broad ranges rather than exact monthly figures. For precise data, it is worth activating at least a small campaign.

How reliable are the search volumes in Google Keyword Planner?

Search volumes in Google Keyword Planner are based on real Google search data, making them the most direct source for advertisers planning Google campaigns. There are nuances: the tool shows twelve-month averages, smoothing out seasonal spikes. Use the per-keyword trend graph to spot seasonal patterns. For non-advertisers, volumes remain indicative within ranges.

Which match type should I choose after keyword research?

The choice depends on the stage of your campaign and available data. Weighing broad match vs phrase match comes down to how much control you need versus how much reach you want to capture early on. Starting fresh? Phrase match offers a good balance between reach and control. With existing conversion volume and knowledge of which terms work, promote top performers to exact match while using broad match for ongoing discovery, always paired with a tight negative keyword policy. Avoid broad match without search term mining: the risk of irrelevant traffic is too high.

How often should I redo keyword research?

Keyword research is not a one-time project. Search behaviour changes, competitors enter and exit, and Google regularly adjusts how match types work (see Google Ads Help, 2026). A solid practice is a thorough keyword analysis at campaign launch, a quarterly review of volumes and trends, and continuous daily monitoring of actual search terms via search term mining. The latter is exactly what AdBrains automates, keeping you current without manual effort.