How we estimate daily search volume

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Here is the formula we use to estimate daily search volume for any given keyword:

Number of times
keyword appears in
our database
----------------------
Total number of
keywords in our
database



x

Estimated total number of
daily queries on all search
engines*



=

Estimated daily
volume of searches
for the keyword

So for a keyword that appears 9,000 times in our database, this is the number of daily searches that we predict:

9,000
-------------
305.7 million

x

485.3 million*

=

14,286 daily searches

* Every day, on average, we collect about 3.06 million search terms from Dogpile.com and Metacrawler.com, who according to Netapplications.com account for 0.63% of searches across all engines. By combining these two figures, we estimate that the total daily searches across all engines is 485.3 million.