What Is the Difference Between Alexa Page Rank and Google Page Rank?

What is Google Pagerank?

Google pagerank is simply a popularity measurement tool.

Designed to rank and place a website in the Google search index, the Google pagerank is given on a scale of 0-10 where a "0" is the lowest possible score for a website and a "10" is the highest score possible. A high pagerank is earned by having a considerable quantity of relevant web pages linking to that paticular website. When a website links to another website, Google pagerank considers that to be a vote for the website in question and therefore indicating that it is of some importance. There is a very complicated formula associated with how Pagerank is calculated but for the purposes of this article it is too detailed.If you are interested in the theory behind Google pagerank (PR) then a quick search for that subject on Google will provide much more information.

Here is a Google pagerank checker that might be helpful:

Google Page Rank Checker

What is an Alexa Rating?

A website's Alexa rating is much different than it's Google pagerank.

Alexa ranks each website solely on traffic to that website. On a scale of 1 to infinity, Alexa rates each website in a descending order towards 1 where the most highly visited website on the Internet is given a rank of 1 and an obscure or obsolete website might have a score in the tens of millions.

Here is an Alexa rating checker that might be helpful:

Alexa Page Rating Checker

So the Difference Is...?

Simple! Google pagerank measures popularity by backlinks and Alexa measures popularity by traffic.