Serving is 2/3 cup but the recipe Iām using only calls for 1/2 cup. What are the calories and how many grams of protein are in 1/2 a cup? I promise Iām not stupid I just suck at fractions. Thanks in advance to any math wizard who can figure this out. š
by smallflame1059
15 Comments
If 2/3 of a cup is 100 calories, then 1 cup is 150 calories. So half a cup would be 75.
If 2/3 cup is 17g protein, 1 cup would be 25.5. Half a cup would be 12.75g.
It would have 150 calories and 25g of protein per cup, divide it in 2 for your half š
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The math you want is calories/serving * servings/cup * cups used.
In this case. That would be 100/1 * 1/(2/3) * 1/2.
100/1 os simply 100. 1/(2/3) is a little tricky if you don’t know fractions, but it is literally just inverse of the denominator, so 1/(2/3) = 3/2. And 1/2 is simply 1/2. So you get 100* 3/2 *1/2 = 300/4 = 75.
To prove the flipping number thing consider this:
1 can be written as 3/3.
1/(2/3) * (3/3) = 3/(2*3/3) = 3/2.
You can do this for any number when needed. š
I would highly recommend getting a calorie tracker like myfitnesspal!
Food listings will usually have different measurements aside from the recommend serving (like by grams/cups/etc) and you can just plug in the #s to calculate it for you.
I ask chat gpt to help with the conversions. Good luck!
I always use grams on my scale because of this too lol
The easiest way to do this is to calculate the calories for a whole cup, then divide by 2.
So, 1 serving is 2/3 cup.
To make a full cup, you need an extra 1/3 cup. And extra 1/3 cup is half of a serving.
So take the calories for 1 serving, multiply by 1.5.
Then divide by 2.
Next time just ask chatgpt, it can do this math for you.
you can think of it like a proportion: you have 2/3 cups to 100 calories or (2/3)/100 and set it equal to what you want 1/2 cups to X calories or (1/2)/X… so (2/3)/100=(1/2)/X, then you can solve for X!
everyone is so nice here
God damn cups is so dumb. Switch to grams and decimals. way easier lol
Im just here questioning why American food labels look like this? Like why do you guys not have a standardized amount? Everywhere else we get the calories per serving AND calories per 100 grams. Way easier to calculate, as one serving isnt always the whole package.
75.
Tbh it’s easier to just go by grams!