Jackie Chan has announced he has bequeathed half of his fortune to charity, saying he looks up to philanthropists like Warren Buffett and Bill Gates.

The exact amount involved wasn't clear because Chan declined to reveal his net worth.

Chan revealed the terms of his will when asked about tycoon Warren Buffett's recent 37 billion dollar donation at a press conference on a tiger conservation campaign.

Buffett said he'd give away the bulk of his stock holdings in the company

The 52-year-old action star said the portion of his fortune reserved for charity would go to his own Jackie Chan Charitable Foundation, which was launched in 1988 to help needy Hong Kong youngsters, but has since branched out into disaster relief, medical donations and supporting the performing arts.

Comparable stars make millions of dollars each year, according to estimates. Will Smith earned 25 million dollars in the period from June 2005 to June 2006, and Jennifer Anniston made 18 million dollars, Forbes magazine has reported. Chan's earnings may be lower because he primarily works out of Asia, where pay levels are generally lower in the entertainment industry.

A significant source of Chan's income comes from his Hollywood films such as the Rush Hour series. The actor has said he can fund entire movies made in Hong Kong with his Hollywood pay packets. His last Hollywood film was Around the World in 80 Days, released in 2004, but Chan is due to start filming Rush Hour 3 late this summer.

Earlier this year, Forbes named Chan one of the world's 10 most generous celebrities.

As for the remaining 50% of his wealth, Chan said his wife may get 25% but the amount wasn't fixed. Chan also has a son, actor-singer Jaycee.