What is keyword density?

Keyword density is the percentage of times a word or phrase appears on a page compared to the total number of words on that page.

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Keyword density formula

The formula is straightforward:

Keyword Density (%) = (Keyword Uses ÷ Total Words) × 100

So if a keyword appears 8 times in a 400-word article:

(8 ÷ 400) × 100 = 2%

This can be measured for single words, but it is often more useful to check phrases too. For SEO, a 2-word phrase like "best coffee" or a 3-word phrase like "best coffee grinder" usually tells you more than a single isolated word.

Why keyword density matters

Keyword density is not a direct ranking factor in the way people sometimes imagine. Google is not rewarding pages because they hit some magic percentage.

What density is useful for is diagnosing content:

1. It helps Google determine the page's intent
2. It can reveal whether a target term barely appears at all
3. It can help you catch keyword stuffing before the page feels unnatural
4. It gives you a quick way to compare similar pages

That makes it a useful editing and auditing metric, even if it is not something you should optimize in isolation.

What is a good keyword density?

There is no perfect number.

In practice, many well-written pages end up somewhere around 1% to 3% for important terms and phrases, but that is more of a rough observation than a rule.

If you force your content to hit a target density, the writing usually gets worse. That is the real risk. Once you start repeating the exact same phrase because a tool tells you to, the page begins to sound stiff and artificial. If the wording feels natural and the topic is clear, you are probably in a good range.

Keyword density vs keyword stuffing

Keyword stuffing is the practice of repeating keywords unnaturally in an attempt to rank higher. It is the old-school version of SEO where pages read like this:

Looking for the best coffee grinder? Our coffee grinder guide will help you choose the best coffee grinder for your coffee grinder needs.

That kind of writing is obvious, unpleasant to read, and not hard for search engines to recognize. Checking density can help you avoid that. If one phrase dominates the page far more than everything else, it is usually worth revising the copy.

Explore more SEO data with KeywordsDB

In case you're interested in more SEO stuff, you might want to check out KeywordsDB. Get full access to data of over 290 million keywords that you can explore however you want.