Keyword density checker

Keyword Density Checker powered by Rext AI lets you find out exactly how often your keywords show up and whether that's helping your SEO or not.

Target keyword

Content to analyze

Keyword density best practices

•Aim for 1-3% keyword density for optimal SEO.
•Use keywords naturally - avoid keyword stuffing.
•Include variations and related keywords.
•Focus on user experience over keyword density.

The basics

What is a keyword density checker?

Why a keyword density checker matters

Keyword density is the percentage of times a specific word appears in a piece of content; for example, if you write a 1,000-word article and mention "your targeted keyword" ten times, your density for that phrase sits at 1%.

What a keyword density checker does

A keyword density checker tells us how many times a specific keyword is used, but as we all know, ranking doesn’t depend on using a keyword under a specific count because Google’s algorithm has evolved well past simple word counting. A common guide is 1–2% for a primary keyword, but flexibility matters more, and keyword density alone can't promise rankings.

What Rext AI provides

Rext AI lets you skip the hassle of manually counting keywords by introducing a free Keyword Density Checker, which provides you with complete information related to keyword density. Instead of scanning line-by-line through a document to tally up repetitions, Rext AI’s Keyword Density Checker provides you with the exact count in seconds and saves your time.

How it works

How to use the keyword density checker

Use the tool

1
Add your target keyword:
Enter your target keyword in the Target keyword box.
2
Paste your content
Paste your content in the Content to analyze box and click Analyze keyword density.
3
Top ten keywords:
Plus, our tool provides you with the top ten keywords you have used most in your content, along with how many times they are being used.

Examples

Keyword density checker examples

01 Example 1

Example blog post check

A 1,500-word article targeting "meal prep for beginners" mentions the phrase 18 times. Density: 1.2%, comfortably within the healthy range for a primary keyword on a page this length.

Features

Key features of Rext AI’s keyword density checker

Accurate density reading:

Stop word filtering and get a cleaner, more accurate density reading by excluding filler words.

Top words and phrases:

See the top words and phrases in your content, with their usage.

Overall word counting

Overall Word Counting provides you with the total word count of content.

No account required

No account required to run a quick check without logging in.

FAQ

What's a good keyword density percentage?

Most SEOs work within a 1–2% range for a primary keyword, though this varies by content length, industry, and competition. Treat it as a sanity check, not a strict rule; natural, readable content matters more than hitting an exact number.

Can keyword stuffing actually get my page penalized?

Yes. Google's algorithms are built to detect unnatural keyword repetition, and pages that read as spammy or manipulative can see reduced visibility. It's rarely one specific percentage that triggers it; it's the overall pattern of unnatural, repetitive phrasing.

Should I check density for exact-match keywords or variations too?

Both. Modern SEO rewards topical coverage over exact-match repetition. Checking your primary keyword alongside synonyms and related phrases gives you a more realistic picture of how well the content covers the topic.

Does this tool check density for a live URL, or only pasted text?

Pasted text only. Paste raw text for drafts still in progress, and for a live page, copy its text in.

Is a low keyword density always a bad sign?

Not necessarily, because if your content naturally covers a topic using varied language and synonyms instead of repeating one exact phrase, a lower density for that specific phrase can still rank well; search engines read for meaning and relevance, not just repetition.

Keep going

Related tools

Content outline generator

If your content has too many or too few targeted keywords and you want to write again, consider Content Outline Generator for a clear outline that properly structures your content, so your keyword placement feels natural from the start.

Try it free

Meta description generator

After checking keyword density, make sure that your keyword shows up in your meta description too, without sounding forced, with our free Meta Description Generator.