"Wimbledon has to be the biggest goal now", Federer, who last won at SW19 in 2012, told reporters.
The 35-year-old Swiss, showing no sign of losing his edge, improved to 19-1 this year, winning the Australian Open in five sets over Nadal, and BNP Paribas Open in straight sets over fellow Swiss Stan Wawrinka.
"I'm happy we're both here together, and I enjoy playing against you", Federer said, upon receiving his trophy and winners' check for just over $1 million.
He also sent the Spaniard out a fortnight ago in early Indian Wells rounds before polishing his season record at Crandon Park.
"My knee was unusual on the clay previous year and my physio thought that was a good thing, not playing too much on the clay".
Federer was awesome against Nadal.
Squinting into the sun at the start today, Federer could not find his first serve facing two break points in the opening game.
Nadal showed his huge promise with a last-32 win on that occasion, but in their 37th meeting it was Federer who emerged with a straight sets win, leaving the Spaniard still searching for his first title in Miami despite reaching five finals.
He said: "It's disappointing for me that I have been trying during all my career. Physically, emotionally it's been a draining week, so I did very well". "I already played three finals this year and, (in the Miami Open final) I lost to a player that had lost only one match (all year)". This time, fortune favoured Federer as a net cord sent his shot over the head of Nadal who couldn't chase down the accidental lob to set up break point.
Federer in remarkable comeback. Then in the French Open we'll see who's the player who won more matches before and then we'll see. I need a rest. I need time to prepare'.
Do YOU want to write for GiveMeSport? And now, Federer will try to become the oldest player to win a Grand Slam title in the Open Era during the Wimbledon in July. The Swiss champion believes that the break he had last season has helped him and that another period of rest is necessary to keep him fresh for grass and the following hard court season.
"I said to you after my lucky victory back then that you would win this title and I still believe you will one day win this title, you are too good to not win here". Maybe a wrong decision by me in that (break point) moment and I think it would turn quickly.
I'm not 24 anymore so things have to change in a big way and I probably won't play any clay court events except the French.
Federer skipped the clay court season past year to concentrate on another shot at Wimbledon. "Every three years I am in this position, but always with the smaller trophy", Nadal said during the trophy ceremony.