Vin Diesel wants to have 12 children.

The 41-year-old action star, who became a father for the first time in April, has revealed he loves being a dad and is keen to significantly expand his brood.

He said: "I want 12 kids! Becoming a father makes me want to be a better person."

Vin, who starred as a US Navy member who was forced to look after his boss' children in 2005 movie 'The Pacifier', confessed working with kids made him want to have his own family.

He explained: "That's how the whole damn thing started. You work with those babies too long, and then I said, 'It is time.' "

Vin, whose 24-year-old model girlfriend Paloma Jimenez gave birth to their daughter in April, insists he gets involved in every aspect of being a parent.

He added to an American magazine: "Of course I change diapers. What do you take me for?!"