How Many Keywords For SEO | Lillian Purge

How many keywords for SEO

“How many keywords should I use for SEO” is one of the most common questions I hear, and in my experience it is also one of the most misleading ways to think about optimisation. The short answer is that there is no fixed number. The longer, more useful answer is that modern SEO is not about counting keywords at all, it is about covering a topic properly and matching search intent clearly.

Years ago SEO advice focused heavily on keyword density, exact match phrases, and hitting specific ratios. That approach no longer works, and in many cases it actively harms performance. Google now understands language, context, and meaning far better than most people realise. What it expects is relevance and completeness, not repetition.

In this article I want to explain how many keywords actually matter for SEO today, how to think about keyword usage properly, and how to avoid the traps that still catch a lot of websites out.

Why counting keywords is the wrong starting point

The biggest mistake is starting with a number. In my experience anyone asking “is five keywords enough” or “is ten too many” is already framing the problem incorrectly.

Search engines do not rank pages based on how many times a keyword appears. They rank pages based on whether the page satisfies the searcher’s intent better than other available results. Keyword usage is only one small part of how that judgement is made.

If you focus on hitting a number you usually end up repeating phrases unnaturally, which hurts readability, trust, and engagement. Those negative signals outweigh any perceived keyword benefit.

SEO today rewards clarity, not counting.

One primary keyword per page still matters

While counting total keywords is outdated, having a clear primary keyword or primary topic for each page is still important.

In my experience the best performing pages are built around one main idea. That idea usually aligns with a core search phrase that represents what the page is about. This gives the page focus and prevents it from trying to rank for everything at once.

The primary keyword should appear naturally in key places such as the page title, main heading, and early in the content, but only where it makes sense. Forcing it beyond that rarely adds value.

Think one main topic per page, not one keyword repeated everywhere.

Secondary keywords happen naturally when depth is right

Secondary keywords are not something you usually need to plan explicitly.

From experience when you explain a topic properly you naturally use related language. These might be variations, synonyms, or closely connected phrases. Google expects this and uses it to understand topical depth.

For example a page about car finance will naturally mention terms like monthly payments, interest rates, PCP, HP, deposits, and affordability. You do not need to force these in. They appear as part of normal explanation.

If you have to consciously add secondary keywords, the content is probably too thin.

How many times should a keyword appear on a page

There is no ideal number of times a keyword should appear.

In my experience a keyword might appear a handful of times on a short page and dozens of times on a long one, and both can perform well. What matters is whether each usage feels natural and useful.

A simple test I use is reading the page out loud. If a phrase sounds repetitive or awkward, it is probably overused. If it sounds like normal language, it is usually fine.

SEO penalties do not come from low keyword counts, they come from poor user experience.

Keyword usage differs by page type

Different pages naturally use keywords differently.

Service pages often repeat service related terms more frequently because they are describing the same offering from different angles. Informational pages tend to use a wider variety of related terms because they explain concepts.

From experience trying to force the same keyword usage pattern across all page types causes problems. Pages should be optimised based on intent, not a universal rule.

Context determines usage, not formulas.

Why Google prefers topic coverage over keyword lists

Google’s algorithms now evaluate pages based on topic coverage rather than isolated phrases.

In my experience pages that answer multiple related questions, clarify common concerns, and explain how things work outperform pages that simply repeat a keyword with slight variations.

This is why SEO content often ranks for hundreds of related queries without explicitly targeting each one. Google understands that a well written page about a subject naturally covers many search intents.

You do not rank by adding more keywords, you rank by being more useful.

Keyword stuffing still harms SEO

Keyword stuffing is still very real, and it still causes damage.

From experience it shows up when pages repeat the same phrase in headings, paragraphs, and sentences in a way that feels unnatural. Users disengage quickly, and Google responds to that behaviour.

Keyword stuffing does not just look spammy, it signals low quality intent. Google’s systems are designed to detect this pattern easily.

If you are worried about whether you are using a keyword too much, you probably are.

How keywords should guide structure, not writing

The best way to use keywords is to let them guide structure rather than wording.

In my experience keywords are most useful for deciding what pages to create and what each page should focus on. Once that decision is made, the writing should be natural and human.

For example if research shows people search for “used electric cars”, that tells you a page is needed on that topic. It does not mean the phrase needs to appear in every sentence.

Keywords shape intent. Writing fulfils it.

Why fewer, clearer keywords often perform better

Pages that try to target too many keywords usually fail to rank well for any of them.

From experience clarity beats ambition. A page that focuses on one clear topic often ranks for many related queries automatically.

Trying to cram multiple services, locations, or intents into a single page weakens relevance signals and confuses users.

SEO rewards focus far more than coverage.

How to think about keywords in modern SEO

Instead of asking how many keywords, a better question is how clearly does this page answer one specific need.

In my experience if a page solves a problem properly, keywords take care of themselves. Search engines recognise relevance through language patterns, structure, and engagement signals.

Keyword research should inform what to create, not how often to repeat words.

That mindset shift is where most SEO improvements come from.

Measuring success without counting keywords

You should never measure SEO success by keyword count.

From experience better metrics include impressions across many related queries, click-through rate, time on page, and conversion quality.

If a page ranks for dozens of variations you never explicitly targeted, that is usually a sign the content is doing its job well.

SEO success looks like breadth of relevance, not repetition.

Common mistakes people still make

The most common mistakes are using keyword density tools, forcing exact match phrases into headings, and editing content to add keywords rather than improve clarity.

From experience these habits persist because they feel measurable and safe, even though they are outdated.

SEO is less mechanical than it used to be, and that requires a mindset change.

How I decide keyword usage in practice

When I optimise a page, I decide on one clear primary topic and ensure it is obvious from the title, headings, and introduction.

I then write to explain that topic thoroughly, using natural language. I do not count keywords. I read for clarity and flow instead.

This approach consistently produces pages that rank broadly and hold their positions.

Final thoughts from experience

There is no magic number of keywords for SEO. Anyone giving you a number is oversimplifying a much more nuanced process.

I think many websites struggle because they are still optimising for search engines that no longer exist. Modern SEO is about usefulness, clarity, and intent alignment.

From experience the best pages use as many keywords as they need to explain the topic properly, and no more than that.

If you focus on answering the searcher’s question clearly, keywords will naturally appear, and SEO performance will follow without the need for counting at all.