Google PageRank is an advanced system of ranking web pages. It is developed by Google founders Larry Page and Sergey Brin. Google assigns a numeric weight-age for each web page from 0 to 10. This PageRank value indicates individual web page value and importance in the eyes of Google.

The ranking system is based upon quantity and quality of inbound links and number of other factors. The page rank value that is displayed in Google toolbar is updated once every three months. Therefore the PageRank values are historical ones and not the real-time values.

With the help of these tools you can check Google PageRank for single or multipe pages across Google's regional and international data centers.