Nutritional values don't add up

stevenvdoesburg862
stevenvdoesburg862 Posts: 2 Member
edited November 18 in Food and Nutrition
Hey there!

So I've been following a great diet/exercise program that is really showing me progess.
Along with that I use MyFitnessPal to track everything I eat.
The thing here is, you can only set a % of proteins/fat/carbs you want per day.
Wouldn't be a big deal, if it was accurate.
According to my diet I would, at the moment, need: 30% carbs, 29% fat, 41% proteins
When I enter this in MFP using 30/30/40 the numbers arent even close to what my program says.
It's like they use a whole different calculation on how many calories are in a gram of proteins.
Example:
Book: 30%carbs/29%fat/41%proteins would be 96.3/91.9/128.4 grams of each.
MFP:30/30/40 would be 129/58/173 grams of each per day.

Where does this difference come from?

Replies

  • amandarunning
    amandarunning Posts: 306 Member
    MFP has converted them to calories as such? So fat having 9 cals and the others 4 reduces the amount of the others? So calories rather than volume...I think!
  • jpaulie
    jpaulie Posts: 917 Member
    not sure I understand. Fat is 9 calories per gram. Are you using 4?
  • jpaulie
    jpaulie Posts: 917 Member
    also if you have alcohol in there it won't show alcohol cals which is 7 cals per gram I believe
  • jstout365
    jstout365 Posts: 1,686 Member
    Yeah, the book calculation appears to be off since the carb and fat grams for an equal percentage of calories won't be equal. Carbs will be over double the grams of fat. So say 2000 calories with 30/30/40 c/f/p breakdown or 600/600/800 calories which is 150g carbs/66.7g fat/200g protein. The difference is calories in fat.

    carbs = 4 calories/gram
    protein = 4 calories/gram
    fat = 9 calories/gram
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