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Semrush Keyword Research

Semrush Keyword Research means using Semrush's tools to discover, compare and prioritise search terms that people type into search engines.

Level: IntermediateRead: 5 minUpdated: 27 Jul 2026By Vera Lindqvist

Key facts

  • Semrush's Keyword Magic Tool generates related keyword ideas from a seed term and shows metrics such as search volume, keyword difficulty and search intent.
  • Keyword Overview lets you analyse keyword-level metrics and compare terms before adding them to a list.
  • Organic Rankings can reveal keywords your own domain already ranks for, which can expose quick-win opportunities, especially around positions 7–20 or 11–20.
  • Keyword Gap compares your site with competitors and can surface shared, weak or missing keywords.
  • Semrush recommends using filters such as volume and keyword difficulty to reduce the list to terms with meaningful demand and realistic ranking potential.
  • Keyword Strategy Builder can group related terms into keyword clusters so multiple queries can be targeted on the same page.

Also called

Semrush keyword analysis, Semrush search term research

Use it for

Finding and prioritising search terms for SEO campaigns

Applies to

Google and other major search engines

How the Keyword Magic Tool Generates Ideas

The Keyword Magic Tool is a powerful SEO Keyword Tool that serves as the starting point for most Semrush keyword research. You enter a seed term, and the tool returns a list of related keywords. Each keyword shows estimated monthly search volume, Keyword Difficulty, search intent and cost-per-click.

You can filter the list by volume range, difficulty score, intent type and more. For example, you might set a minimum volume of 100 and a maximum difficulty of 40 to find terms with realistic ranking potential. The tool also groups keywords by topic, which helps you see clusters of related queries.

Once you find promising terms, you can add them to a keyword list. This list can later be exported or used in other Semrush tools like Position Tracking. The Keyword Magic Tool is designed to give you a broad view of the keyword landscape around your topic.

  • Filter by volume range to focus on terms with meaningful demand.
  • Filter by keyword difficulty to avoid terms that are too hard to rank for.
  • Filter by search intent (informational, commercial, navigational, transactional) to match user needs.

Comparing Keywords with Keyword Overview

Before using Keyword Overview, it helps to understand what keyword means in the context of search queries. Keyword Overview provides a detailed analysis of a single keyword. You can see the search volume trend over time, the SERP features present, and a list of related questions. This helps you understand the context of a term before committing to it.

You can also compare multiple keywords side by side. This is useful when you are deciding between two similar terms. For instance, you might compare "SEO tools" and "search engine optimization tools" to see which has higher volume or lower difficulty.

The tool also shows the top 10 organic results for the keyword. This gives you a sense of the competition and the type of content that ranks. Use this information to decide whether your page can compete.

Finding Quick Wins from Organic Rankings

Before targeting new keywords, check what your site already ranks for. Use the Organic Research tool and look at the Positions report. Focus on keywords where your site appears in positions 7 to 20. These are often the easiest to improve with small optimisations.

For instance, if you rank at position 12 for 'how to do keyword research', improving the page's title tag and adding a clear meta description could push it into the top 10. Even a small improvement in click-through rate can lead to significant traffic increases if the keyword has high search volume. Additionally, you can use the Organic Research tool, which is one of the many search engine optimization tools available in Semrush, to see which pages are already performing well and replicate their success for other keywords.

You can also import data from Google Search Console. Look for queries with high impressions but low click-through rates. These are keywords where you already have visibility but need to improve the title or meta description to get more clicks.

Semrush's own guidance on seo keyword research recommends using these existing ranking queries as a source of keyword ideas. They often require less effort than targeting completely new terms. This approach can yield quick traffic gains.

Analysing Competitors with Keyword Gap

The Keyword Gap tool lets you compare your domain with up to four competitors. It shows four categories: shared keywords, keywords only you rank for, keywords only competitors rank for, and keywords none of you rank for. The most useful category is often the one showing keywords your competitors rank for but you do not.

You can sort these missing keywords by volume or difficulty. Prioritise terms that have decent volume and low difficulty. These represent opportunities where you can create content to compete.

Keyword Gap also shows the estimated traffic each competitor gets from those keywords. This helps you assess the potential value. Remember that these are estimates, not exact numbers, but they give a useful directional sense.

Clustering Keywords with the Keyword Strategy Builder

The Keyword Strategy Builder helps you group related keywords into clusters. Each cluster can be targeted by a single page. This avoids keyword cannibalisation and strengthens topical authority.

You start by adding a list of keywords. The tool automatically groups them based on semantic similarity. You can then assign each cluster to an existing or new page. Semrush also provides optimisation ideas for each page.

For example, if you have keywords like 'best SEO tools', 'top SEO tools', 'SEO tools for beginners', and 'affordable SEO tools', the tool might group them into a cluster around 'SEO tools'. You can then create a single page titled 'Best SEO Tools for Beginners' that covers all these variations. This approach not only saves time but also signals to Google that your page is a comprehensive resource on the topic.

Clustering is especially useful for content hubs or pillar pages. Instead of creating separate pages for every slight variation, you create one comprehensive page that covers the entire cluster. This aligns with Google's preference for in-depth content. This clustering methodology is similar to the approach described in what ahrefs keyword research means.

  • Add your keyword list to the tool.
  • Review the suggested clusters and adjust if needed.
  • Assign each cluster to a page and review optimisation ideas.

Monitoring Rankings with Position Tracking

After you have chosen keywords and optimised pages, you need to track performance. Position Tracking lets you monitor your rankings for a set of keywords over time. You can check daily or weekly and see changes in average position, visibility and estimated traffic.

For example, if you notice a keyword dropping from position 5 to 8, you can investigate whether a competitor published new content or if your page needs updating. You can also track the impact of algorithm updates on your keyword set. Position Tracking allows you to segment keywords by campaign or folder, making it easier to monitor specific groups.

The tool also shows competitor rankings for the same keywords. This helps you see if your improvements are outpacing the competition. You can set up alerts for significant ranking changes.

Position Tracking integrates with Google Search Console and Google Analytics. This gives you a fuller picture of how ranking changes affect clicks and traffic. Use this data to refine your keyword strategy over time. To generate the keywords you track, you would have used the what semrush keyword magic tool means to build your initial list.

Common Mistakes in Semrush Keyword Research

Many practitioners chase high-volume keywords without checking difficulty or relevance. This leads to wasted effort and low rankings. Always filter by difficulty and ensure the keyword matches your page's intent.

Ignoring existing ranking queries is another common error. Your site may already rank for terms that need only small improvements. Check Organic Research and Google Search Console for quick wins.

Not checking search intent can result in targeting terms that do not match the user need. For example, a transactional query should not target an informational page. Use the intent filter in Keyword Magic Tool.

Failing to cluster related keywords creates duplicate or fragmented content. This weakens topical focus and can confuse search engines. Use the Keyword Strategy Builder to group terms before writing.

Comparison of Semrush keyword research tools
ToolPurposeKey Metrics
Keyword Magic ToolGenerate keyword ideas from a seed termVolume, difficulty, intent, CPC
Keyword OverviewAnalyse a single keyword in depthTrend, SERP features, related questions
Keyword GapCompare your keywords with competitorsShared, missing, weak keywords
Keyword Strategy BuilderGroup keywords into clustersCluster suggestions, page assignment
Position TrackingMonitor rankings over timeAverage position, visibility, traffic

Common mistakes

  • Chasing high-volume keywords without checking difficulty or relevance Leads to wasted effort and low rankings
  • Ignoring existing ranking queries and quick wins Misses the easiest opportunities to improve traffic
  • Not checking search intent Results in targeting terms that do not match the page or user need
  • Failing to cluster related keywords Creates duplicate or fragmented content and weakens topical focus

Questions

What is the best free keyword research tool?

Semrush offers a limited free account that gives you access to some keyword data. For full functionality, you need a paid subscription. Other free tools include Google Keyword Planner and Google Search Console, but they have different limitations.

How do I do keyword research in Semrush?

Start with the Keyword Magic Tool by entering a seed term. Use filters to narrow the list by volume, difficulty and intent. Add promising keywords to a list, then use Keyword Overview to compare them. Finally, use Keyword Gap to find competitor opportunities.

Is there a Semrush keyword research tutorial?

Semrush provides a knowledge base article titled "Conduct Keyword Research" that walks through the process step by step. There are also video tutorials on their blog and YouTube channel. The official documentation covers all tools in detail.

What is keyword difficulty in Semrush?

Keyword difficulty is a score from 0 to 100 that estimates how hard it is to rank in the top 10 organic results for a keyword. It is based on the number and authority of domains currently ranking. It is a third-party estimate, not a Google metric.

How do I find low competition keywords in Semrush?

Use the Keyword Magic Tool and set the keyword difficulty filter to a low range, such as 0–30. Also filter by volume to ensure there is enough search demand. Then check the SERP analysis in Keyword Overview to see if the top results are weak or thin.

See also

Sources

  1. Semrush: Conduct Keyword research semrush.com
  2. Semrush: How to use Semrush for keyword research semrush.com
  3. Google Search Central: SEO Starter Guide developers.google.com
  4. Google Search Console Help: Performance report support.google.com

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