Quick answer
Keyword density is the share of a page's words that are the target keyword. There is no ideal percentage, and Google doesn't use it as a target. What matters is placement (title, H1, opening paragraph, a subheading) and covering the topic fully. Treat density around 3% or more only as a sign of possible stuffing.
"Aim for 1 to 2% keyword density" is advice that has outlived its usefulness by about fifteen years. Some audit tools still flag pages that fall outside a range, which keeps the idea alive. Here is what density actually tells you, and what to check instead.
What keyword density measures
Keyword density is the number of times a keyword appears divided by the total words on the page. A 1,000-word page that uses "trail running shoes" 12 times has a density of about 1.2% for that phrase, depending on how you count multi-word phrases.
It was a reasonable proxy in the early 2000s, when search engines leaned heavily on word matching. Modern ranking systems understand synonyms, related terms and context. Google's representatives have said for years that there's no ideal density and that it isn't something to optimise.
Why density is a poor target
- It rewards repetition, not relevance. Using a phrase more often doesn't make a page more useful for the query.
- It ignores topic coverage. A page can hit "2%" and still miss the questions searchers expect answered.
- It encourages awkward writing. Forcing exact phrases into sentences makes copy worse for readers, which hurts engagement and conversions.
- Different counting gives different numbers. Tools disagree on whether to count variants, plurals and partial matches, so one page can be "1.1%" in one tool and "2.4%" in another.
What still matters instead
| Check | Why it matters | Target |
|---|---|---|
| Keyword in the title tag | One of the strongest on-page relevance signals | Yes, near the start |
| Keyword in the H1 | States the page's topic | Yes, in natural words |
| Keyword in the opening paragraph | Confirms the topic early | Yes |
| Keyword or variant in a subheading | Shows the topic runs through the page | At least one H2 |
| Topic coverage | Matches what searchers expect | Subtopics the ranking pages cover |
| Readability | Keeps visitors reading | Reads naturally aloud |
These are what Seotific checks. Its keyword checks look for exact, phrase and loose matches in the title, H1, opening copy and subheadings, and score them as high or medium impact. Keyword density itself is scored as cosmetic: zero points.
When density does matter: stuffing
The one situation where density is a useful warning is very high repetition. If a phrase makes up 3% or more of a page's words, the copy probably reads as stuffed. Google's spam policies name keyword stuffing explicitly, and readers notice it before algorithms do.
The test is simple: read the page aloud. If the keyword appears in sentences where a pronoun or synonym would sound natural, rewrite them. Then check that the page still has the keyword in the title, H1 and opening.
The other density finding worth acting on is zero. If the keyword doesn't appear anywhere, the page probably isn't about the query you think it is, which is a relevance problem rather than a density one. More on how these findings rank against others is in which SEO errors matter most, within the guide on how to prioritize SEO issues. The related myth about length is covered in does word count matter for SEO.
A quick self-check
Search the page for the keyword with your browser's find tool. You want hits in the title, the H1, the first paragraph and at least one subheading, then occasional natural mentions. If the find bar shows a hit in almost every paragraph, rewrite some with pronouns or synonyms.
Frequently asked questions
What is a good keyword density for SEO?
There isn't one. Google doesn't rank pages by keyword density. Use the keyword in the title, H1, opening paragraph and at least one subheading, cover the topic fully, and write naturally. Only very high density, around 3% or more, deserves attention as possible stuffing.
How do I calculate keyword density?
Divide the number of times the keyword appears by the total number of words on the page, then multiply by 100. Tools count variants differently, so treat the number as rough, and don't use it as a target.
Is keyword stuffing still penalised?
Yes. Keyword stuffing is named in Google's spam policies, and pages that repeat phrases unnaturally can be demoted. Beyond rankings, stuffed copy reads badly and loses visitors. Write for the reader and include the keyword where it fits naturally.
Should I use LSI keywords?
Google doesn't use "LSI keywords"; the term comes from an old information retrieval technique. What helps is covering the subtopics and questions searchers expect, which naturally brings in related terms. Compare your headings with the pages that rank rather than chasing word lists.
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