George Clooney has revealed he had given up on becoming a father until he met his wife Amal, saying he had accepted his life would be focused on his career.

The 56-year-old had twins Alexander and Ella with the human rights lawyer Amal, 39, three months ago.

The couple, who married in 2014, live in LAos Angeles.

"I didn’t think it was going to happen for me," he told the Daily Mail.

"I thought my life would be focused on my career, not relationships, and I’d sort of accepted that.

"And then I met Amal and I thought, 'Well, I have this incredible relationship, this is wonderful.' And then. . . all of a sudden we have these two knuckleheads around who make me laugh every day."

As an older father, Clooney said, all he could do was "play catch up" and hope he is able to chase his children around when they are older.