What is Keyword Density in SEO? and How to Calculate it?

What is Keyword Density in SEO_ and How to Calculate the Keyword Density (Formula)_

Keywords and keyword density topics are a discussion point between SEO gurus around the world, and everyone has a different opinion, let’s discuss the right way to implement keyword density in SEO and how to properly deploy keywords inside your content.

According to Wikipedia “Keyword density is the percentage of a keyword or phrase appearing on a page, not the total number of words on the page.”

In simple term, Keyword density in SEO can be used to determine whether a website page is related to a specified keyword or keyword phrase.

What is the keyword density in SEO?

Suppose you have a 200-word article you use your keywords 20 times and your density will be 20%. Many people use different formulas to compute the density of keywords.

The following is a quick example: ·

(keywords number/total words) * 100

Keyword density in SEO

The reason you need to put keywords on the page is to let search engine robots better understand your content so that you can rank the keywords.

But in recent days, the density of keywords is much less important than site quality and site permissions. But this does not mean that the keyword density does not hold any value for SEO. That’s true.

In fact, it’s one of the factors in the On-page SEO checklist.

In the early days of the modern Internet (for example, In the 90s, search engines use keywords and keyword density as a very important factor in web page content) that is, a particular keyword or phrase that appears more than once in the content of the site, more likely the site will rank well and search for the keyword or phrase.

If you’re looking for a keyword research tool, I’d recommend you to read the best keyword research tool recommended by 133 experts an article created by Robbie Richards.

Keyword density is a little bit of a tightrope. Too low density in content and your keywords will have little (or almost no) meaning in your search engine rankings.

keyword density in SEO

Too high keyword density in SEO, you may be penalized by search engines  “keyword fills” (which they will lower your position on the search engine results page because you’ve used a keyword way too many times, it’s just a coincidence).

Many SEO experts think the best keyword density is 1% to 3%, Google docs, any keyword or phrase keyword density should be less than 5%.

You have to decide for yourself what is right, but it looks like a keyword density of about 2%-3% is correct.

Check keyword density with this free keyword density checker tool.

What’s the ideal percentage of keyword density in SEO (as per Google)?

Here is a myth: if we use our keywords more than once, we will rank higher in the SERPs.

This may actually be bad because Google may put your web page (and your site) as a  “keyword spam” and will result in more than one optimization penalty.

The following is an example of a keyword fill:

keyword-stuffing example - Keyword density in SEO

Personally, 1-3% ‘s keyword density plus  “Semantic keywords ” and LSI keywords are the most effective for me. Google recommends writing natural articles.

Again, there is no ideal percentage, but putting your keywords in the natural place will be the best job.

In short, you need to keep a good keyword density in SEO percentage that looks natural rather than populated. This is one of the most common questions I’ve seen in freelance copywriting.

Once I hired an author to write an article about three-word keywords. He succeeded in adding three words to the keyword 13 times.

That article looks like a chunk of junk post. There is a list of online tools to calculate keyword density in SEO. Try to keep the density at around 1.5% (Safer Side).

So where should you put the keywords?

  • In a fixed link
  • H1 Tag
  • H2 Tag
  • Meta-title tag
  • Article start
  • End of article
  • Add related images and use the target keyword as anchor text

Again: Avoid using keywords to populate your article just to increase the keyword density in SEO.

Instead, try adding value to make the content more useful.

You can use videos and slides and other media tools to make your content more informative and decent.

  • Keyword density is useful but should avoid fillers.
  • The article should look natural.
  • Bold and tilt your keywords and other important Semantic keywords.
  • Use keyword variants (pre: SEO, SEO, search engine rankings).
  • Use Latent Semantic Index (LSI) keywords.
  • Use the SEO plugin in WordPress to check keyword density (or online tools).

Finally, search engines are most concerned about the rankings of these other factors:

  • How useful is your article?
  • How about information?
  • How much social signals do you get from your article?
  • How many backlinks did you get?

There are hundreds of signals that Google believes are ranked on the site.

How to calculate the keyword density in SEO (formula)?

Here, I want to show you how to calculate your keyword density in SEO and help you optimize your site. There will be a little bit of math involved, but nothing is more complicated than a small multiplication and division.

How you calculate the density of a keyword depends on how you use the keyword.

To calculate the keyword density in the simplest form, divide the number of times that you use a specific keyword by the total word count in the text that you want to parse, and multiply the result by 100 to reach the percentage.


Keyword density = (nkr/tkn) x 100


  • Density = Keyword Density
  • NKR = How many times have you repeated specific keywords
  • TKN = Analyze the total number of words in the text

Therefore, if your article or content (the text you are parsing) is 500 words long and you have used the keyword 15 times.

Keyword density = (nkr/tkn) x 100

= (15/500) x 100

= 0.03 x 100

= 3

Keyword density = 3%!!!

It’s very straightforward, isn’t it? key phrases add a new level of complexity to the keyword density problem. When people search on the internet, they not only have to find a word. They may use a phrase that contains more than one word.

“Sadies Gourmet Waffles” is an example of a key phrase because it contains more than one word, not a word keyword.

So someone trying to pander to my search may try and optimize their content, key phrases- “waffles in Alaska State”, they will try and fine-tune the density of the key phrases, the coveted 1%-3% range.

This will change the computation we have to perform to compute our keyword density because now we are dealing with entities that contain multiple terms. This poses an interesting dilemma.

To find the keyword density in SEO of key phrases, it may be easy to use:

Density = (Nkr x (numerical forecast/tkn)) x 100


  • Density = Keyword Density
  • NKR = How many times have you repeated specific key phrases
  • Value = number of words in a key phrase
  • TKN = Analyze the total number of words in the text

Keyword Density in SEO Formula

So again, if we take my  “Sadies Gourmet Waffles ” Example-there are three words in my keywords, I’ve used this key phrase three times in my total word 500 words.

Density = (Nkr x (numerical forecast/tkn)) x 100

= (3 x (3/500)) x 100

= (3 x 0.006) x 100

= 0.018 x 100

Density = 1.8%

However, there is a problem with this keyword density in SEO formula. You can’t avoid the fact that K.D (Keyword Density) refers to the frequency of a particular keyword.

This means that “Sadies Gourmet Waffles” should be counted as the rest of your text, not a word in three words.

This situation turned us back to the original formula, keyword density = (nkr/tkn) x 100, and do the above calculations to us:

= (3/500) x 100

= 0.006 x 100

= 0.6% It’s a little low, very different.

If you use this formula to calculate your keyword density if you consider these key phrases, including more than one word, artificially swell the total word count of your text, so that you can further argue that the total number of words you analyze should be removed by removing the extra key phrase from the total.

Try the Ultimate Keyword Density in SEO formula:

Keyword Density Formula = (nkr/(tkn-(Nkr x (Nwp-1))) x 100.

This formula allows for a simple word keyword, as well as key phrases, including as many terms as you like, so it’s the original formula. There are several online tools that can help you calculate the density of keywords.


source: Text-alyser

Just eject the text you are analyzing, the software will give you the keyword and –phrases percent value. The real SEO capability of your site is its ability to let your visitors enjoy and link your content.

Always keep in mind that keywords are secondary to the quality of content that you provide to your visitors. Make it compelling, make it interesting, make it useful.

Optimize your keyword density in SEO, If you feel it should be modified.

Free Tools to Analyze Keyword Density in SEO

  1. https://www.seocentro.com/tools/seo/keyword-density.html
  2. https://www.internetmarketingninjas.com/seo-tools/keyword-density
  3. http://textalyser.net/
  4. https://smallseotools.com/keyword-density-checker

What is Keyword Density in SEO? and How to Calculate it? 1

Source: SEO-Book

If I were to propose an S.E.O formula, it might be like this:

S.E.O. = high quality content + inbound link load + [keyword optimization (if required)]

You May Also Like

About the Author: Amit Purohit

Amit Purohit is an SEO expert and pro-blogger, besides blogging amit assists in planning, organizing, and implementing SEO and content strategy for clients to generate leads and conversions.


  1. Nice article.. Amit now I’ll be able to optimize my keyword density on all my content, i did read few articles on keyword density in seo. But, this one is the most helpful and informative piece on the web 🙂

  2. Hi amit, great post.. I have a question as I can see you have said that keyword density should be around 1.5% but most marketers prefer it to be around 2-3% what you would like to say about that.

  3. I believe the formula has been curated nicely and thanks to your post now i can set up the right keyword density in my blogs 🙂 thanks man!

Leave a Reply

Your email address will not be published. Required fields are marked *