Protein Calculator

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Protein Is The Most Important Part Of Your Diet, Get It Right!

Find out how much protein you need daily in your diet with this protein calculator!

The Protein Calculator Formula :

Daily Protein Calculaor

About 10 to 35% of your diet should be protein, so the daily protein amount needed is calculated by determining your daily caloric needs, then dividing by 4 (4 calories per gram of protein) and then multiplying by .225 (22.5% being the approximate percentage of your diet which should be protein).


If you enjoyed this protein calculator, take a look at our other fitness calculators.

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Author: Myriam

Fitness passionate, civil engineer and now blogger. After losing 45 pounds in a year and maintaining for a few years, I decided to create my website to share my nutrition tips and workouts to help other people achieve their fitness goals and maintain it.

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  1. HELP! Why do I end up with 45% protein when using your numbers? Here, you try it. I’m female, 200 lbs, 66″ tall, 69 yrs old, wish to lose 2 pounds per week.

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    • Yes I tried it. It’s a caloric percentage as fat has more calories. and it’s 22.5% not 45% ?

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  2. my protein calculator showed 0..why is that ?

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    • Hi Liene. I just tried the calculator and it seems to be working fine. You might have used the wrong units. Make sure you enter your weight in pounds, your height in inches (5’6″ would be 66 inches as an example) and your age 🙂

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    • i used your ketosis calculator and got my daily protein limit as 113g. i used this calculator and got 169g….how/why?

      Post a Reply
      • Hi Elizabeth! The protein calculator will approximate the average calories you should be eating for MAINTENANCE WEIGHT and calculate 22.5% of protein.
        I don’t know what is the calorie amount you entered in the Keto Calculator, but if you picked the maintenance calories and used the same entry data, you should pretty much get the same results. If you entered a lower amount of calories (to lose 2 pounds a week), you’ll also get a lower amount of calories. I would say the Keto calculator is more customizable, you can rely on that.

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