Is it me or is MFP just bad at math?

tmoneyag99

Yesterday according to MFP I had a net deficit of 1,200kCal.

(1,200kCal * 7 days/week)*5weeks = 42,000kCal for 5 weeks

(42,000kCal/week )/3,500 kCal per pounds of weight = 12lbs in 5 weeks (roughly)


MFP just told me that if I kept having days like yesterday I would lose 19lbs in 5wks.


FTR 12lbs=/=19lbs

How in the world did they come up with an additional 7lbs of weight loss???

BusyRaeNOTBusty

How did you come up with that 1200 deficit? Were you 1200 cal under your goal? Unless you set your calories to maintenance your goal should already include a deficit.

TavistockToad

the 5 week prediction is pointless. don't worry about it....

Tacklewasher

^^This?

Can you open your diary?

ladyreva78

The 5 weeks projection claims you would lose 19lbs in 5 weeks.

(19*3500)/5 = 1900kcals below maintenance (per day if every day was like yesterday).

Not sure how you come up with 1200 as a deficit?

timtam163

Hmmm that's weird... your math seems to be the correct one. Send them a message?

CyberTone

I would guess that you have your weekly loss goal set to 1.5 lbs; that equates to 750 Cals/day deficit.

If you were in an additional deficit of 1200 Cals for that day; then 750 + 1200 = 1950 Cals total deficit from estimated maintenance.

(1950 Cals * 7 * 5)/3500 is 19.5 lbs, or about 19 lbs.

Note: the estimated projection for each day will vary based on your current logged weight, which determines your BMR, which determines that day's estimated maintenance.