Anybody know of a calculator that works back from calories to weight/volume?

Like, you can say blueberries 100 calories and you can access what weight of the food that is?

Replies

  • RelCanonical
    RelCanonical Posts: 3,882 Member
    This website might be helpful: https://www.nutritionix.com/food/blueberries/100-g

    Just increase grams until you get to 100 calories.
  • AnnPT77
    AnnPT77 Posts: 34,204 Member
    Like, you can say blueberries 100 calories and you can access what weight of the food that is?

    I just use the calculator on my phone, tablet, or laptop.

    Look up "Blueberries - raw": 100g, 57 calories. (Leave that entry open on my phone usually, but jump to the calculator for next step).

    (100 calories desired / 57 calories per hundred grams) = 1.754...

    So I want 1.75 times the 100g serving, which would be (1.75 x 100g) = 175g

    That last step is trivial with the 100g thing, but the same basic approach works fine with everything (ounces, or whatever).

    YMMV, but I wouldn't find a reverse lookup any quicker.
  • allmannerofthings
    allmannerofthings Posts: 829 Member
    This website might be helpful: https://www.nutritionix.com/food/blueberries/100-g

    Just increase grams until you get to 100 calories.

    That is cool!
  • puffbrat
    puffbrat Posts: 2,806 Member
    I just add the appropriate entry to my diary and adjust the servings until I get close to the number I want.
  • MelanieCN77
    MelanieCN77 Posts: 4,047 Member
    The nutrionix one is neat, thanks! Close as I'll get I think.

    It's not that I'm unable to do the math, but have found a small need for it that would be nice to have streamlined.