Catching up on news is among the most popular activities for tablet computer owners, but most are not willing to pay for it, according to a study published on Tuesday.

The joint study by the Pew Research Centre's Project for Excellence in Journalism and The Economist Group brings unwelcome news for media outlets hoping to bolster flagging print revenue with paid digital news content.

Eleven per cent of US adults now own a tablet computer such as Apple's iPad or some other device, according to the study.

Seventy-seven percent of 1,159 US tablet owners surveyed said they use their tablet every day, spending an average of about 90 minutes on the device.

Sixty-seven per cent said they use their tablet daily to surf the Web, 54 per cent said they use it to send and receive email and 53 per cent said they use it to get news.

Thirty-nine per cent said they use their tablet daily for social networking, 30 per cent for gaming, 17 per cent for reading books and 13 per cent for watching movies and videos.

But while more than half of tablet owners were using the devices daily to get news, just 14 per cent said they have paid directly for content, the study found.

Another 23 per cent have a subscription to a print newspaper or magazine that includes digital access.

Twenty-one per cent of the tablet news consumers who haven't paid directly for news said they would be willing to spend USD 5 a month if that were the only way to access their favourite news source on the tablet.

"When it was launched, many observers believed that the tablet might help change the experience of news consumers and the economic ground rules of digital news consumption," the study's authors said.

"That belief was based on the sense that people would consume information on tablets largely through special applications or apps... which news organisations might be able to charge for," they said.

The study found, however, that while two-thirds of tablet news consumers have a news application on their tablet, most rely on their ordinary browsers.

Forty per cent said they get their news mainly through a Web browser, 31 per cent said they use news applications and the Web browser equally, and 21 per cent said they get their news mainly through apps.