Disparity Between % and Grams

rmbrass
rmbrass Posts: 9 Member
in Food and Nutrition
My lunch macros are confusing. The pie chart says - carbs-8%, protein-29%, fats-63%. But the total grams per item - carbs-5g, protein-19g, fats-18g. If the grams for protein and fats are only one point difference, why is the fat more than twice % ?? Must be a logical scientific reason for this disparity!

Replies

  • AnnPT77
    AnnPT77 Posts: 35,054 Member
    edited October 2022
    It's the percentage of calories.

    Carbs and protein have roughly 4 calories per gram, fats 9 calories per gram, alcohol 7 calories per gram. (Alcohol is its own thing, not fat, protein or carbs, but it has calories.)

    P.S. It still might not multiply exactly exact, because of rounding.

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