Cluster your keywords into topics

How keyword clustering works

Keyword clustering groups related keywords so you can target multiple terms with a single article instead of writing a separate page for each keyword. If "best ai marketing tools," "ai marketing software," and "ai tools for marketers" all belong together, they're one article, not three.

This tool uses semantic similarity to group keywords. It looks at shared words, stems, and meaning to find clusters. It's fast and works well for obvious groupings.

For more precise results, SERP-based clustering is the standard. That method checks the actual Google results for each keyword and groups keywords that share the same ranking pages. If Google returns similar results for two keywords, they have the same search intent and belong in the same cluster. SERP-based clustering is available with a free account.

Why clustering matters for SEO

Without clustering, most sites end up with dozens of thin pages all targeting slight variations of the same keyword. Those pages compete with each other in search results — a problem called keyword cannibalisation. Clustering prevents this by mapping out which keywords belong on which page before you write anything.

Clustering also reveals the structure of your niche. You'll see natural topic groups emerge — some with high search volume and tough competition, others with lower volume but almost no competition. That structure becomes your content roadmap.

What to do with your clusters

Each cluster is a potential article. The next step is deciding which clusters to write first. A common approach: start with low difficulty clusters to build early rankings and traffic, then tackle harder clusters once your site has some authority.

You can plan this manually, or sign up for a free account to get a phased content roadmap that orders your clusters by difficulty and impact.

CSV format

One keyword per row. If your CSV has multiple columns (from SEMrush, Ahrefs, GSC, or other tools), we'll detect the keyword column automatically. Volume and KD columns are used if present but not required.

Limits

Up to 200 keywords without an account. Upload up to 1,000 keywords with a free signup. No credit card required.