Keyword density is the percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page. In the context of search engine optimization keyword density can be used as a factor in determining whether a web page is relevant to a specified keyword or keyword phrase.

1. Keywords density & keywords stuffing
Keyworddensity isthe percentage of timesakeywordorphrase appearsona webpage comparedto
the total numberof wordson the page.Inthe contextof searchengine optimization keyworddensity
can be usedasa factor indeterminingwhetherawebpage isrelevanttoa specifiedkeywordor
keywordphrase.
Many SEO expertsconsiderthe optimumkeyworddensitytobe 1% to 3% percentandGoogle
documentationstatesthatyourkeyworddensityforanykeywordorphrase shouldbe lessthan5%.You
mustmake your owndecisionsaboutwhatisrightfor youbut itseemslike akeyworddensityof around
2%-3% isjustright.
Here I am goingto showyou howto calculate yourkeyworddensityandhelpyouoptimizeyour
website.There will be alittle bitof mathematicsinvolvedbutnothingmore complicatedthanalittle
multiplicationanddivision.Howyoucalculate yourkeyworddensityreliesheavilyonthe circumstance
inwhichyou are usingyour keywords.
Key words density maths:
To calculate keyword density in its simplest form, you divide the number of times
that you have used a specific keyword by the total number of words in the text that
you are analyzing and multiply the result by one hundred to achieve your
percentage.
Therefore:
Keyword Density = (Nkr / Tkn) x 100
Where:
Density = your keyword density
Nkr = how many times you repeated a specific keyword
Tkn = total words in the analyzed text
So, if your article or piece of content (the text you are analyzing) is 500 words in
length and you have used your keyword 15 times, the keyword density for that
keyword is…

2. Keyword density = (Nkr / Tkn) x 100
= (15 / 500) x 100
= 0.03 x 100
=3
Keyword density = 3% !!!
That’s pretty straight-forward!
KEY PHRASES DENSITY MATHS:
Key-phrasesaddanewlevel of complexitytothe keyworddensityissue.Peopledon’tonlysearchfor
one wordwhentheyperformsearchesonthe internet.Theymayuse aphrase whichcontainsmore
than one word.Userswill searchtermsthat containmore than one wordusuallybecause theyare
lookingforsomethingspecific.
If I were insearchof a great waffle-houseinmyarea(believe me,notsucha crazy idea) Iwouldn’tjust
searchthe keyword“waffles”inGoogle…Thiswouldreturnme alistof millionsof results.Iwould
insteadsearchsomethinglike “wafflesinDelaware”.“WafflesinDelaware”isan example of akey-
phrase because itconsistsof more than one wordas opposedtoa keywordwhichisasingle word.
So,someone tryingtocater to my searchwouldpossiblytryandoptimize theircontentforthatkey-
phrase – “WafflesinDelaware”andtheywouldtryandfine-tune the densityof the keyphrase tothat
coveted1% – 3% range.
Thischangesthe calculationthatwe must performtocalculate our keyworddensity,becausenowwe
are dealingwithanentitythatcontainsmultiple terms.
Thispresentsan interestingdilemma.Toworkoutthe keyworddensityof akeyphrase,itcouldbe
temptingtouse:
Density = (Nkr x (Nwp / Tkn)) x 100
Where:

3. Density = your keyword density
Nkr = how many times you repeated a specific key-phrase
Nwp = number of words in your key-phrase
Tkn = total words in the analyzed text
So, again, if we take my “Waffles in Delaware” example – There are three words in
my key-phrase and I have used that key-phrase three times amidst my total word
count of 500 words.
Density = (Nkr x (Nwp / Tkn)) x 100
= (3 x (3 / 500)) x 100
= (3 x 0.006) x 100
= 0.018 x 100
Density = 1.8%
There is a problem with this keyword density formula, however. One cannot ignore
the fact that keyword density refers to the frequency of the appearance of one
particular keyword. This means that “Waffles in Delaware” should be counted as if it
was just one word amongst the rest of your text and not three words.
This idea brings us back to our original formula,
Keyword Density = (Nkr / Tkn) x 100, and doing the calculation above gives
us:
=(3 / 500) x 100
=0.006 x 100
=0.6%
Which is a little low and very different. If you were using this formula to calculate
your keyword density, you would want to add a few more instances of “Waffles in
Delaware”
Furthermore, if you think about it, these key-phrases that consist of more than just
one word artifically inflate the total word count of your text and as such it can be
further argued that the total word count of your analyzed text should be adjusted

4. by removing the excess key-phrase words from the total . From this we can derive
the ultimate Keyword density formula :
Density = ( Nkr / ( Tkn -( Nkr x ( Nwp-1 ) ) ) ) x 100
Using this formula, we can see that our keyword density for the key-phrase
“Waffles in Delaware” is too low if we only use three instances of “Waffles in
Delaware”.
Let’s imagine then that we upped-the-ante and now use the key-phrase “Waffles in
Delaware” nine times, instead of just three:
= (Nkr / (Tkn – (Nkr x (Nwp – 1)))) x 100
= (9 / (500 – (9 x (3 – 1)))) x 100
= (9 / (500 – (9 x 2))) x 100
= (9 / (500 – 18)) x 100
= (9 / 482) x 100
= 0.0186721991701245 x 100
= 1.87%
That is better and within the safe keyword density to use.
Important tools for checking keywords density:
http://tools.seobook.com/general/keyword-density/
http://www.live-keyword-analysis.com/
http://www.seomastering.com/keyword-density-analyzer.php
http://seotools.seozy.com/tools/keyword-density-checker/
http://www.seobay.com/tools/keyword-density-checker/
http://www.seocentro.com/tools/seo/keyword-density.html
http://seochat.com/seo-tools/keyword-density
http://www.webconfs.com/keyword-density-checker.php
http://www.webcaretech.com/search-marketing/search-engine-optimisation/

5. KEYWORD STUFFING:
Keywordstuffingisconsideredtobe an unethical searchengineoptimization (SEO) technique,which
leadstobanninga website frommajorsearchengineseithertemporarilyorpermanently.Keyword
stuffingoccurswhena webpage isloadedwithkeywordsinthe metatagsor incontentof a webpage.
The repetitionof wordsinmetatagsmay explainwhymany searchengines nolongeruse these tags.
Keywordstuffinghadbeenusedinthe pastto obtaintopsearch engine rankingsandvisibilityfor
particularphrases.Thismethodiscompletely outdatedandaddsnovalue to rankingstoday.In
particular,Google nolongergivesgoodrankingstopagesemployingthistechnique.
Hidingtextfromthe visitorisdone inmanydifferentways.Textcoloredtoblendwiththe
background, CSS"Z" positioningtoplace text"behind"animage — andtherefore outof view of the
visitor— and CSSabsolute positioningtohave the textpositionedfarfromthe page center are all
commontechniques.By2005, manyinvisible texttechniqueswere easilydetectedbymajorsearch
engines.
"Noscript"tagsare anotherwayto place hiddencontentwithinapage.While theyare avalid
optimizationmethodfordisplayinganalternative representationof scriptedcontent,theymaybe
abused,since searchenginesmayindex contentthatisinvisible tomostvisitors.
Sometimesinsertedtextincludeswordsthatare frequentlysearched(suchas"sex"),evenif those terms
bearlittle connectiontothe contentof a page,inorderto attract trafficto advert-drivenpages.
In the past,keywordstuffingwasconsideredtobe eitherawhite hator a blackhat tactic, dependingon
the contextof the technique,andthe opinionof the personjudging it.While agreatdeal of keyword
stuffingwasemployedtoaidin spamdexing,whichisof little benefittothe user,keywordstuffingin
certaincircumstanceswasnotintendedtoskew resultsinadeceptive manner.Whetherthe term
carriesa pejorativeorneutral connotation isdependenton whetherthe practice isusedto pollute the
resultswithpagesof little relevance,ortodirecttrafficto a page of relevance thatwouldhave
otherwise beende-emphasizeddue tothe searchengine'sinabilitytointerpretandunderstandrelated
ideas.Thisisno longerthe case.Searchenginesnow employthemed,relatedkeywordtechniquesto
interpretthe intentof the contentona page.
Withrelevance tokeywordstuffing,itisquotedbythe largestof searchenginesthatthey
recommend KeywordResearch
and use (withrespecttothe qualitycontentyouhave toofferthe web),toaidtheirvisitorsinthe search
of yourvaluable material.TopreventKeywordStuffingyoushouldwiselyuse keywordsinrespectwith
SEO, SearchEngine Optimization.Itcouldbe bestdescribedaskeywordsshouldbe reasonableand

6. necessary,yetitisacceptable toassistwithproperplacementandyourtargetedefforttoachieve
searchresults.Placementof suchwordsinthe providedareasof HTML are perfectlyallowedand
reasonable.Google discusseskeywordstuffingas RandomlyRepeatedKeywords
N.B: you shouldnot use more than one keywordsin meta tag.
Hope it will be helpful for all .If you have any questionabout this don’t hesitate to ask me.
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