MFP math

me0231 · September 2018

Can someone help me figure this out? I have custom goals but the MFP's math doesn't seem to check out.

My macros for today are
108 protein
94 carbs
50 fat
(no alcohol)

1g of protein is 4 calories, so protein calories today are 432.

Same for carbs, so a total of 376.

1g fat = 9 calories, total 450

Which is a grand total of 1258, right? MFP shows me a total of 1346. Where are those calories coming from?

Fitnessgirl0913 · September 2018

Something is probably off in one or more of the database entries you used. Check what you entered against the USDA database for accuracy.

ETA: many of the entries here are user entered so they are not always accurate, for example if I wanted to enter an entry for carrots I could put that they have 50 calories per 100g and 100% of that is from fat. Obviously this is untrue but MFP would accept my entry and make it accessible for others to use as well. same goes for missing pieces. I could make incomplete entries and MFP would accept those as well and again make them available for others to use.

seska422 · September 2018

You should definitely recheck your database entries for accuracy, but part of the problem is rounding. Calories in the nutrition facts are derived separately rather than from multiplying out the macros. Macros get rounded to half gram increments and calories to ending values of 0, 5, or 10.

Calories in the calorie section should be close-ish but they are very unlikely to match calories derived by multiplying out the macros.

me0231 · September 2018

Thanks! I've double checked the entries and they seem to be accurate. So maybe rounding but nearly a hundred calories seems like a lot.

MFP math

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