McLaren driver Lewis Hamilton insists he is unconcerned by Ferrari's promising form over the winter testing period ahead of the Formula One curtain raiser at Albert Park in Melbourne on Sunday.

Ferrari set the pace in testing in Bahrain last month but rising British star Hamilton has been pleased with his own team's efforts and insists anything could happen this weekend.

"We have done all the testing that has been needed and we have arrived here very optimistic about the weekend and with our package," he said.

"If you do look at the testing then Ferrari have been reasonably quick in their last few tests, so some could say that Ferrari are the strongest at the moment.

"But you don't know what programme they are on so we won't know until tomorrow or Saturday exactly who is where, but I am sure we are going to be very competitive."