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# Calculating Protein & Carb Calories per ounce: subtract water weight?

Created October 18, 2012 at 1:16 PM

I believe that protein & carbs is 4 calories / gram (28g/ounce X 4 = 112 calories/ounce). I believe that fat is 9 calories / gram (28g/ounce X 9 = 252 calories/ounce).

I purchased 10 ounces of bacon & eggs & some tator-tots at the Whole Foods breakfast bar.

I'm trying to estimate the minimum possible calories it contained.

If it was all protein & carbs, would it be 10oz * 28 g/ounce * 4 = 1120 calories? Does moisture content factor into this at all?

BTW, if it was all fat, would it be 10oz * 28 g/ounce * 9 = 2520 calories?

(I have the impression that fat doesn't really contain any water/moisture so maybe that's an accurate number for the total calories from fat).

I feel like I might be missing something in my analysis so please help me clarify my thinking.

Regards, Mike

PS: of the 10 ounce breakfast, I'm guessing that 1 ounce was bacon, 3 ounces was potato tots, and 6 ounces was cheese eggs

(3275)

on October 18, 2012
at 04:07 PM

Further, a 10oz NY strip steak has 711 calories, 85g protein, 38g fat, 0g carbs. So, that's 70 calories per ounce. And, 711 cal/280grams=2.5 calories/gram. So, if protein & fat is supposed to be 4cals/gram, and fat is 9 cals/gram, is the missing from water?

(3275)

on October 18, 2012
at 04:05 PM

Further, a 10oz NY strip steak has 711 calories, 85g protein, 38g fat, 0g carbs. So, that's 70 calories per ounce. And, 711 cal/280grams=

(3275)
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1

(41747)

on October 18, 2012
at 01:26 PM

Water has no calories and food is mostly water, so yes, you have to take into account water content.

If you want to count calories, use a calorie counting website like: cronometer.com, paleotrack.com, loseit.com, etc...

0

(4493)

on October 19, 2012
at 12:42 AM

Most food will contain water and some will contain ash, both these items show up on databases like cronometer.com, nutritiondata.com & the usda database & will add to the food weight (but zero calories).

& some ballpark calorie numbers are (per 1 gram);
Ethanol (drinking alcohol); 7 cals
Organic acids; 3 cals
Polyols (sugar alcohols, sweeteners); 2.4 cals
Fiber; 2 cals

& the ones you already mentioned;
Fat; 9 cals
Proteins; 4 cals
Carbohydrates; 4 cals

0

(3275)

on October 18, 2012
at 03:56 PM

ok. I just entered the following into cronometer:

5oz scrambled eggs,

1oz bacon,

3oz french fries,

1oz cheddar cheese,

Total weight:

10oz

It calculated it as 818 calories, 37g carbs, 42g protein, 56g fat.

So, it averaged out as 81 calories per ounce, not 112-252 calories / ounce.

Mike

(3275)

on October 18, 2012
at 04:07 PM

Further, a 10oz NY strip steak has 711 calories, 85g protein, 38g fat, 0g carbs. So, that's 70 calories per ounce. And, 711 cal/280grams=2.5 calories/gram. So, if protein & fat is supposed to be 4cals/gram, and fat is 9 cals/gram, is the missing from water?

(3275)

on October 18, 2012
at 04:05 PM

Further, a 10oz NY strip steak has 711 calories, 85g protein, 38g fat, 0g carbs. So, that's 70 calories per ounce. And, 711 cal/280grams=