Matt Harvey is rested and ready.

When the stud Mets right-hander takes the mound tomorrow at Citi Field against the White Sox, he will be pitching on seven days’ rest, but he doesn’t expect the extended layoff to affect him.

Harvey was originally supposed to pitch yesterday, but Saturday’s rainout pushed Jon Niese into that spot. Because of today’s scheduled off day, Harvey is receiving two more days of rest than he originally anticipated.

“Last year with extra rest I don’t feel I had trouble with command or anything like that,” Harvey said. “My body feels extra rested and extra good, so that’s something to take into consideration.”

Manager Terry Collins said he wasn’t tempted to start Harvey yesterday, because that would have meant bumping Niese to tomorrow against the White Sox and having the lefty pitch on eight days’ rest.

Harvey threw 121 pitches in his last start, taking a no-decision in Miami after allowing one run on seven hits over 5 1/3 innings.

“I feel like I can go out there, 120 or 130 pitches each time,” Harvey said. “I feel like my body can handle it.”