Actual Page Rank / Toolbar Page Rank

Google sends out its Googlebot to crawl URLs and it caches a copy in the Google Server. Then this server compress and stores the crawled web pages into a database.

An Indexer parses the web pages in the database and saves the links in the anchor file. From this anchor file google generates the backlink(inbound) links database that is used to calculate Real PageRank.

Google updates your backlink count on a monthly basis. When the count is updated you will start seeing a change in your webpage rankings as your website is given a credit.

The toolbar PageRank is a logarithmic scale of 10. This is only a scale of real pagerank. And the real pagerank is the only factor that is used to determine Google's search engine listings.

Here is an example to derive a toolbar pagerank:

Real PageRank	Toolbar PageRank
1 – 10	1
10 – 100	2
100 – 1000	3
1000 – 10000	4
10000 - 100000	5