Federer opted out of last week's Kooyong open as a result of a stomaach virus. The world number one, who will be bidding for his 13th grand-slam title, one behind the record held by Pete Sampras, will go into the event having not played a competitive match for two months.
Andre Agassi, in 1995, was the last man to win the event without playing competitively in the build-up, but any thoughts that he will be under-prepared were dismissed out of hand as a calm and confident Federer said he was raring to go.
"Yeah, I would consider myself 100 per cent," Federer told reporters.
"I've been playing sets the last couple days, which was very important for me. I'm happy with my form, to be honest. Very pleased. Physically I'm fine now, too. No more issues."
Federer said the new Plexicushion courts at Melbourne Park seemed to suit his game, but criticised the tournament for the change.
"I think the surface is a little bit too slow, in my opinion," he said. "Everything is already slowing down. Everybody's already complaining that we're playing too much from the baseline.
"I think it's not good to change surfaces at the grand slams because what if the French Open would all of a sudden go to hard courts?
" it's not the same tournament any more. They've changed the surface too many times in the last years here. So they had better keep this one for the next 50 years."
Federer is sheduled to begin campaign against Argentine Diego Hartfield, has played in 10 consecutive grand slam finals and said he felt comfortable under the intense pressure placed on him at the start of each one.
"There's always a lot of pressure, but somehow I always get through," he said.
"I have got the right approach and I'm confident. I've got different styles of play I can use to win matches." said Federer