Check Keyword Density

Keyword Density plays a major role in the overall ranking of any webpage, article, or content online. Keyword/phrase density is referred to the percentage of the number of times a keyword or keyphrase is used in an article with respect to the total number of words used in the whole document. The right keyword density, text density, and other white hat factors add up to a good ranking in any search engine.


Many bloggers, content creators, and writers often struggle to understand the whole concept of keyword density and end up stuffing keywords and using other unpopular practices to get ranked better. Sadly, Google notices malpractices and stuffing these days and is taking down such content that does not confine to their regulations.


In simple terms, Keyword Density is the total number of keywords divided by the total number of words in an article. So, while writing a piece of content, you have to make sure it is rich and relevant to the topic; that is when the “right” use keywords come into play. “The food rich in spices will have more taste.” Just like that, any article that is rich in keywords will be ranked higher in search engines.


There is a wide range of SEO tools that are available today and with amazing algorithms backing them up and countless new features, it is almost effortless to become a content creator or blogger online. Today we will talk about the top SEO tools that calculate the keyword density of any piece of work.

What Is Keyword Density?

Keyword density is the percentage of the ratio of the number of keywords or phrases to the total number of words in the content. With search engine optimization in play, the Keyword destiny decides the magnitude of the article with respect to its relevant keyword. Keyword density really helps the search engine filter the level of the most relevant content on the entire internet.


If you type in the keywords a few more times than you should have, the density checker will show the percentage by how much your article is stuffed with keywords. Back in the late 1990’s page ranking was the most important thing, and keyword density was responsible for deciding the fate of your page. Ever since then, nothing much has changed, keyword density is still calculated by a basic algorithm, and there are many amazing tools there today that calculate keyword density flawlessly.

How To Check Keyword Density?

Before the latest tools, there initially was a formula that verified the local keyword density of any article, webpage, or content back in the day. Today there are many different variations of this formula online, many of which are equally logical, but here is the fundamental formula that we believe was the first. 

Before learning the formula, you would want to get through with these terms:


  • Nkr = number of repeated specific keywords/phrases.
  • Nwp = total number of words in your key-phrase.
  • Tkn = total words in the analyzed text
  • Density = your keyword density


Formula: Density = ( Nkr / ( Tkn -( Nkr x ( Nwp-1 ) ) ) ) x 100


The keyword density score of any page is calculated by the total number of keywords of key-phrases repeated in the document, with respect to the total number of words in the key phrase and the total analyzed text. 


This simple algorithm gives us a limit to which we can exactly calculate the total number of keywords/phrases to use in a document, that sets us on the right position on the Google ranking. Figuring out the right percentage of keyword density is still debated on online platforms and other forums. All of the arguments sound very compelling and scientific, and the narrowed down number is around 3%.


How To Check Keyword Density in Word?

One can check the keyword density with the above formula manually, but there are plenty of cutting edge online tools that calculate the keyword density. If you have a habit of writing in a word or any other software and want to check the keyword density of any article, all you have to do is copy the text and paste it in on their website’s keyword analyzer.


Many of these tools vary with their specific services; for instance, there are some sites that will provide keyword density, link density, grammar mistakes, and other errors. Some people think that this is a shortcut around Google and Yahoo!’s algorithm, but we may never know. All we know is that keyword density makes sense logically and has worked out for a long time.


What Is The Ideal Keyword Density?

Search engines do not release a set of rules that tells us the precise number of keywords to be used for a document, so based on past experiences, people have many opinions on this. An ideal keyword density is affected by many factors like the text density and the size of the phrase or keyword.


A good keyword density is around 0.5% to 3% ideally. But all of your words should make up your focus keyphrases, and many times these keyphrases are not usually found in one sentence. Keyword stuffing is also not advised, always make sure that your keywords are placed once within every 100 words.

What is Text Density?

Text density or Lexical density is defined by the ration of the total number of lexical words (or content words) by the total number of words used in the document. Lexical words give meaning to the document, and these are nothing but nouns, adjectives, verbs, and adverbs. All of these are counted and tallied to calculate the keyword density.


Articles, prepositions, conjunctions provide the sentence with little to no meaning as compared to other lexical words. The texts that do not give you information on the document if read separately are known as non-lexical words or function words.


So, in simple words, text density is the total number of words in a written or spoken document that provides the information of the text if read without context. Text density is very crucial for a good ranking. Along with keywords, if your text density is also very good, your article, webpage, or content are bound to be on the top list of rankings on search engines.

What Is Keyword Stuffing?

At a certain point in time, we all have come across the term “Keyword stuffing.” It is a malpractice of sorts and is basically the repetition of the keyword again and again until the search engine calculates its rank. Keyword stuffing usually gets many articles to top the charts, but this kind of content does not work out. Once upon a time, it was a very popular black hat SEO strategy to get ranked well, but today it is even taken down from the search engines.


If the keyword density of your document comes very high, then you might have stuffed keywords. Never stuff keywords, this ruins online content for a lot of people who rely on it. Back in the early 2000’s, this might have worked out, but today Google has specific guidelines that ultimately penalize such bloggers who stuff keywords by fining them or removing their posts altogether


Sometimes high-density blogs lead to poor user experiences for readers, and misinformation from this can cause a lot of problems. Always make sure your keyword density is very low, and all the other links, texts are aligned well with the topic.


List of Free Tools to Check Keyword Density

1. SmallSEOTools

SmallSEOTools is one of the best keyword/phrase analyzer and keyword checker on the internet. It is very straightforward and simple to use. All one needs to do is enter the text manually or just paste the URL of the page that has to be analyzed. The algorithm on which SmallSEOTools functions is one of the most efficient and accurate ones in the market.


After the engine is done calculating the density, it will display the percentage of the total number of times a keyword has appeared as compared to the total number of words in the whole document. This tool is solely built to calculate the keyword/phrase density to the most accurate percentage.


Developed by the very reputed Dev team of Small SEO Tools, this tool was made to identify unnecessary keyword stuffing. Many writers and content creators initially start off by stuffing a lot of keywords/phrases unnecessarily and end up getting fined or penalized. This tool tells writers exactly how much-overstuffed words are there and gives tips on improving their content.




2. Keyword Density Checker

The Keyword Density Checker is another standard tool that does an outstanding job when it comes to keyword density checking. Keyword density checker is widely used across the world and has a user base for around 51,717 people all around the globe. This tool has two main features to check any content for keyword analysis


You can either use the tool by simply entering the URL of the page, or you could just copy-paste the content on its website keyword checker.  It is one of the fastest tools that give you results as accurately as possible in the least possible time. Keyword density checker extracts all the keywords from any webpage or content, and after the extraction, it will calculate its frequency as per the text density. This online tool is one of the most reliable SEO tools that are available, for all levels of writers.

3. SEObook

SEObook is a unique SEO tool that analyzes any content or webpage to its very last keyword. This tool does a remarkable job when it comes to identifying keyword stuffing and blackhat practices. This tool helps writers stay on the right path while simultaneously improving their content.


SEObook prevents writers from getting fined or penalized from any search engine, so all the tips and tricks that are provided on their webpage are legitimately accurate. It helps all levels of writers polish their work to the fullest and does not leave any room for an error that the search engine would notice.

4. WebConfs

WebConfs is another decent and credible keyword density checker on this list. Just like any other keyword checker, WebConfs will give you an option to provide the URL of the desired web page content to be checked and another copy paste option for people who write their content elsewhere.


Just like any other search engine, it calculates all the keywords, keyword density, and whether some keywords are stuffed or not. WebConfs has been around for some time now and is always a good source for making any content better for the SEO rankings.


5. PrepostSeo

Prepost SEO is a fairly popular SEO tool. It checks all the keywords or keyphrases present in the content or any webpage by either URL or by simple copy and paste. Not only does this tool provide you with the keyword density, but it also helps you pinpoint where exactly your content can be better. Its website keyword analysis feature is very user friendly and quick. This tool might be one of the most convenient tools on the market if nothing else works out.



6. Pingler

Pingler is yet another SEO tool that never disappoints. It sorts all the keywords aside with respect to the total words in the document. This tool crawls the URL if provided and will extract text and will help you analyze your work. Giving vital and inside information on everything in the document. It is extremely straightforward and easy to use and has helped a lot of people start their content writing careers.


7. The SEO Tools

The SEO Tool is a different, rather minimalistic tool that gives you the most precise keyword/phrase density. It does not have many features as compared to its competitors, but its algorithm is as logical as it gets. This tool never fails to give you the exact percentage of the density in your text.


If you are looking just to check your density and maybe some other few standard features, then this tool is the best option there is. Using this will help you climb the rankings of the search engines.

8. Surfer SEO

Surfer SEO or Keyword Research module takes the keyword game to the next level. Using their cloud checker online will give you the capacity to find phrases the same as the ones on popular search engines like Google and Yahoo! You can find similar pages that are ranked better with the same keywords you are using. This is indeed one of the best methods to identify relevant content with keyphrases with respect to their SERP similarity.


While using this tool, you will gain a bunch of keywords, generated in two different groups, regular search terms and questions. These all come with a search volume and levels of relevancy based on SERP.


9 DupliChecker

DupliChecker is a very simple and easy to use platform, where you can analyze your content. Using this tool will not fix any of your flaws or errors but will help you identify them easily. Based on the errors, DupliChecker will give you pointers on how to improve your document or webpage.


The best feature about this SEO tool is that it is free to use, and has a legitimate algorithm backing their module. If all else fails, DupliChecker will not. There are plenty of ways in which you can check your content, and with the help of the strategies and tips provided, you can strategy on the keywords and make changes accordingly.



All you need to do is enter a valid URL to let the checker go through an online document, or simply copy and paste your preferred content. Alternatively, you are given options to analyze specifics of the document, and you can even choose what you would like to check if not only for the keyword density. Results are always immediate, and with a growing online community, DupliChecker might just expand its SEO tools and further add groundbreaking features to its tech.



These tools will help you balance your keywords for your content. But it is always good to remember a few things: If your article has fewer keywords but more overall words that do not contribute exactly to the topic, then the article might not be ranked well, even though the percentage might seem right.


Because search engines regularly change their rules and regulations to amp up the content, so it is close to impossible to know the real algorithm for ranking. At the same time, if your content has a large number of keywords, then search engines might flag your webpage, and you can be fined for violating the code of content creating. So, do not stop or get discouraged if you are not able to get a good ranking for your content, consistency, and SEO tools are undoubtedly a big help.


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