Floyd Mayweather -- 24 Days to Go ... 3 Pounds to Lose

We don't know what your diet will be like over the next month ... but Floyd Mayweather might be doing a little calorie counting, 'cause the champ has three lbs. to shed before the May 2 superfight.

TMZ Sports got their hands on a pic of Floyd tipping the scales for his mandatory 30 day weigh in ... and the Money Man came in at 150.5 ... 3.5 pounds over the welterweight limit of 147.

If you're worried about Mayweather making weight ... don't. We spoke with his high class chef not too long ago and she told us Floyd typically ratchets up his diet and training closer to fight date.

As for Manny, we're told the medical board of the WBC has been trying to reach out to the Filipino slugger for his weigh in ... but hasn't been able to make contact.

We saw him a little while ago ... at See's Candies.