What is Keyword Density?

Keyword density describes how often a keyword appears on a web page relative to the page's total word count. The formula is simple: keyword density = (times the keyword appears ÷ total words on the page) × 100. So a phrase used 15 times in a 1,000-word post has a keyword density of 15 ÷ 1,000 × 100 = 1.5%.

Does keyword density affect rankings?

There's no keyword-density percentage that Google rewards. In a January 2023 SEO office hours session, Google's John Mueller said, "no, Google does not have a notion of optimal keyword density. Over the years, our systems have gotten quite well at recognizing what a page is about, even if the keywords are not mentioned at all." The session's official transcript, still published in Google's Search Central documentation as of August 2026, is blunter: keyword density "does not matter, but being explicit does matter."

What matters is presence, not repetition. Use the terms your readers actually search with, and say plainly what the page offers instead of hoping search engines guess it.

It wasn't always this way. In the late 1990s, keyword density was an important ranking factor. As site owners learned to exploit it, search engines moved weight to other signals through successive algorithm updates.

Repetition can still hurt in one direction: keyword stuffing. Google's spam policies list it as a violation, detected by automated systems and human review, and pages that violate them may rank lower in results or not appear at all.

Using keywords without keyword stuffing

Don't chase a percentage. Google has never published an ideal keyword density, and in that same January 2023 session Mueller said there's "no reason to measure the percentage of time you use those keywords on the page." Two situations are worth fixing, though:

• The phrase never appears: name your subject plainly in the page title and opening paragraph where the exact phrase fits naturally. Don't force it into subheadings or count appearances; clear wording and relevant coverage beat any placement quota.
• The phrase repeats awkwardly: swap some repeats for synonyms and natural variations. Google's systems recognize what a page is about without exact-match repetition.

The bigger win is choosing the right phrase before you write a word. Start with keyword research, and follow our step-by-step guide to keyword research for SEO when you're ready to build a list.