Tuesday, July 19, 2011 at 5:26 pm.

Just like that, the iPad is already bigger than the Mac

It’s only been a year and a few months since Apple’s iPad launched, but as of last quarter, it has already passed Apple’s 27-year-old Mac business in revenue.

During the June quarter, Apple sold 9.2 million iPads for $6 billion in revenue. It also sold 3.9 million Macs for $5.1 billion in revenue.

Apple even admitted that some of the iPad’s success was at the Mac’s expense: “We do believe that some customers chose to purchase an iPad instead of a new Mac during the quarter,” Apple COO Tim Cook said on the company’s earnings call, “but we also believe that even more customers chose to purchase an iPad over a Windows PC.”

The iPhone and iPad now represent more than two-thirds of Apple’s overall sales, up from about half of Apple’s sales a year ago.

Apple Mac iPad revenue June 2011 quarter