Free SEO Tool

Topical Cluster Builder — Pillar & Cluster Posts in Seconds

Type your seed keyword and pick a niche, and this free Topical Cluster Builder maps out a pillar post, supporting subtopics, post ideas, and an internal linking plan ready to drop into your content calendar today.

Cluster Settings
Your Topical Cluster

Enter a seed keyword and click Build Cluster to see your pillar and supporting posts.

Flat post list will appear here.

How I Plan a 30-Post Topical Cluster in One Afternoon

The first niche site I ever built had 47 blog posts and ranked for almost nothing. The posts were good. The keywords were real. But every post sat alone, with no link to the post next to it, no plan, no cohesion. Google could not figure out what my site was about because frankly, my site did not know either.

The second site I built used a topical cluster approach from day one. Same niche. Same writer (me). Same hosting. Within six months it was earning more than the first site had earned in three years.

What a Topical Cluster Actually Is

A topical cluster is a group of pages on your site that all cover one topic from different angles. There is one big page in the middle called the pillar post. It covers the topic broadly. Then there are smaller cluster posts around it that each cover one narrow piece in detail. Every cluster post links to the pillar. The pillar links back to every cluster post. The result is a tight web of related content that tells Google: this site knows about this topic.

That signal matters. It is the foundation of what SEOs call topical authority. Without it, you are competing post by post. With it, every new post you publish lifts the rest.

Why Most Bloggers Skip This Step

Cluster planning feels like work. You sit down to write, and instead of writing you are mapping out 30 future posts. It feels slow. It feels like overhead. So most bloggers skip it. They write whatever post is on their mind that day and hope the topical authority happens by accident.

It does not happen by accident. I have audited too many sites where the writer worked for three years, published 200 posts, and ranked for none of them. Every one of those sites had no cluster plan. Every one of them was salvageable, but only after we paused new content and spent two weeks reorganising what was already there.

How I Use This Tool

My workflow is simple. I pick a topic I know I can rank for. I open this tool. I type the seed keyword, pick the niche, set the cluster size, and click Build. The tool gives me a pillar post idea plus 5 subtopics with 5 posts each. That is 26 post ideas in under 30 seconds.

I do not use them as-is. I scan the list. Some titles are perfect. Some need rewording. A few I skip because they do not fit my audience. By the time I am done editing, I have a real content plan I can drop into Trello or Google Sheets and start writing from.

The Internal Linking Pattern That Works

This is where most cluster setups fall apart. Bloggers map out the posts but forget the links. Without links, a cluster is just a list of posts. With links, it becomes a knowledge structure.

The pattern I use: every cluster post links to the pillar at least once, ideally in the first 200 words. Every cluster post also links to two other cluster posts on related subtopics. The pillar post links to every cluster post in a clearly labelled section near the bottom. That is it. Three rules. Apply them consistently and your cluster will start ranking together within three to four months.

The Mistake I Made on My First Cluster

I built a 30-post cluster on my second site, published all 30 posts in one month, and waited. Three months later, only the pillar was ranking. The cluster posts were getting almost no traffic. I panicked.

What I did not understand was that clusters need time. Google needs to crawl all 30 posts, see the internal links, understand the topic relationships, and then start ranking. That took six months for me. By month nine, almost every post was ranking on page one or two for its target keyword. By year one, the cluster was earning more than my full-time job.

So plan your cluster, build it, link it, then be patient. The math works. Just not on your timeline.

Want help building a real content plan for your niche?

I help bloggers and small business owners audit their existing content, identify topical gaps, and build cluster plans that actually rank — no fluff, no theory, just what works.

Topical Cluster Builder – FAQs

Common questions about topical clusters, content silos, and using this builder effectively.

What is a topical cluster?

A topical cluster is a group of related pages on your site that all cover one topic. There is one main "pillar" post that covers the topic broadly, and several "cluster" posts that each cover a narrow subtopic in depth. The pillar links to every cluster post and every cluster post links back to the pillar.

How is this different from a content silo?

The two are similar but not identical. A silo is a strict folder structure (/topic/subtopic/post/) where pages do not cross-link outside their silo. A topical cluster is more flexible — it focuses on internal linking patterns and topical depth rather than URL structure. Most modern SEOs prefer clusters because they are less rigid.

How big should my cluster be?

For a new site, start with one cluster of around 10 posts (1 pillar + 9 cluster posts) before moving to a second topic. For an established site, 20 to 30-post clusters work well for competitive topics. The key is depth — cover the topic thoroughly enough that you do not need to send readers elsewhere.

Should I publish all posts at once or over time?

Both work, but publishing over 1 to 2 months is usually best for new sites. Google takes time to crawl and understand internal link patterns, so spreading the launch lets the search engine see your cluster develop naturally. Just publish the pillar first.

What is the difference between informational and commercial intent?

Informational posts answer questions ("what is X", "how to X"). Commercial posts compare or recommend ("best X", "X vs Y", "X review"). A balanced cluster has both. Pure informational clusters do not earn well; pure commercial clusters lack the educational depth that builds topical authority.

Can I use the same keyword across multiple posts in a cluster?

No — that causes keyword cannibalization. Each post should target a unique main keyword (or close variant) so they do not compete with each other. Run your titles through a keyword cannibalization checker after planning.

How long should each cluster post be?

Pillar posts: 2,000 to 4,000 words covering the topic broadly. Cluster posts: 1,000 to 2,000 words focused on one specific subtopic. Quality over word count — if your cluster post needs 800 words to fully answer the question, do not pad it to hit a target.

Should I link every cluster post to every other cluster post?

No. Each cluster post should link to the pillar plus 2 to 3 other cluster posts on the most closely related subtopics. Linking everything to everything dilutes the signal and looks unnatural.

What if my niche does not fit any of the preset categories?

Pick "General" — it uses the most universal subtopic structure (What, How To, Best, Vs, Tips, Mistakes, Tools). You can add your own modifiers in the custom modifiers field to tailor the output further.

How long until a cluster starts ranking?

For a new site, 6 to 12 months for cluster posts to start ranking, with the pillar usually ranking first. For an established site, 3 to 6 months is typical. Do not panic if cluster posts are quiet for the first few months — they often rank in waves once Google understands the topical relationships.