Mozilla Europe president Tristan Nitot estimates Firefox is now used by approximately 330 million people:
Nitot explained that counting the requests gives Mozilla the number of active daily users. To calculate the number of monthly users, the organisation multiplies the number of active daily users by three, to adjust for days when people are not browsing.
Over the past eight weeks, Mozilla has seen an average increase of 10 million daily users, from approximately 103 million to 113 million. That translates to a total of approximately 330 million monthly users .
"It's amazing to have 330 million users," said Not. "That's the size of the population of the USA."