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    Keyword Research for Google Ads: The Ultimate Guide

    Patrick LotteNovember 25, 202510 min read
    Keyword research

    Keyword Research: The Foundation of Success

    The right keyword research is the foundation of every successful Google Ads campaign. In this article I share my approach as a Google Ads expert.

    Why is keyword research important?

    Good keywords:

    • Reach the right audience
    • Have a healthy balance between volume and competition
    • Lead to conversions, not just clicks
    • Match your budget - see average costs by industry

    Step 1: Brainstorm

    Start by gathering keywords:

    • What would customers search for?
    • What problems do you solve?
    • What products/services do you offer?

    Step 2: Use tools

    Free tools:

    • Google Keyword Planner
    • Google Trends
    • Google Search Suggestions (autocomplete)

    Paid tools:

    • SEMrush
    • Ahrefs
    • Ubersuggest

    Step 3: Analyze search intent

    Not all keywords are equal. Analyze the intent:

    IntentExampleValue
    Informational"what is SEA"Low
    Navigational"Google Ads login"Low
    Commercial"compare Google Ads experts"High
    Transactional"hire Google Ads expert"Very high

    Want to better understand what SEA is? Read our SEA marketing guide for beginners.

    Step 4: Analyze competition

    For each keyword, look at:

    • Who is already advertising?
    • What is their ad copy?
    • How much does a click cost (estimated CPC)?

    Step 5: Group keywords

    Organize your keywords by theme:

    • 1 ad group = 1 theme
    • 10-20 keywords per group
    • Relevant ads per group

    Ready to set up your campaign? Follow our step-by-step guide.

    Long-tail vs short-tail

    Short-tailLong-tail
    "SEA""Google Ads expert for e-commerce"
    High volumeLow volume
    High competitionLow competition
    Low conversionHigh conversion

    Tip: As a Google Ads expert I often focus first on long-tail keywords for faster results at lower costs.

    Negative keywords

    Just as important as your target keywords:

    • Exclude irrelevant searches
    • Save budget for relevant clicks
    • Improve your Quality Score - learn how here

    Read more about negative keywords in our complete guide on negative keywords.

    Frequently Asked Questions

    Which tools are best for keyword research?

    The Google Keyword Planner is the best free option because it uses direct data from Google. For more extensive analyses, SEMrush and Ahrefs are popular, but for most SMBs the free Keyword Planner combined with Google Trends is sufficient.

    How many keywords do I need per campaign?

    Start with 10-20 keywords per ad group, grouped around one theme. Too many keywords per group reduces relevance. A complete campaign often has 3-10 ad groups, so 30-200 keywords total.

    How do I know if a keyword is too competitive?

    Look at the estimated CPC in Keyword Planner. If it's higher than you can justify in conversion value, focus on long-tail variants. Often you can find cheaper alternatives with "[product] + [location]" or "[product] + [specification]".

    Get in touch for a free keyword analysis for your industry.

    Need help with your Google Ads?

    As a Google Ads expert with 17+ years of experience, I help you get more from your ad budget. Request a free audit and discover where you can save.