The WISPA, the WSA and the PSA has used a computerized system for determining the rankings since April 1984.
It is also a merit-based method used for determining entry and seeding in women's squash tournaments.
[1] The current world number one is Nour El Sherbini of Egypt, who replaced Nouran Gohar in September 2023.
The weekly rankings (issued on each Monday) are used in selecting entries to tournaments and in determining the seeds.
Ranking points for each players are made up of a cumulative total consisting of the top 9 tournament results.