Simple Body Calcs for Bodybuilders

Bodybuilder and fitness calculators

Protein Calculator

Everyone who starts to drink protein is immediately facing the question, how much protein should I drink per day? We have created an online calc for estimating the daily dose of protein.

It should be noted that it is difficult to calculate the exact amount of protein, and precise calculations are made using other methods, such as the nitrogen balance.

Although the calculator takes into account the daily protein intake from food, it only provides an approximate result with a long range because the amount of protein you need depends on your goals, your training intensity, and your diet.

*This information is for guidance, please consult your health care professional!

Protein Calc

age should be in 14 to 80 range
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You should take ...... of protein per day


BMI Calculator

Body mass index (BMI) is a measure of a person’s weight concerning their height, to estimate whether they are overweight or underweight.

Is BMI accurate?

This method is not always suitable for individuals. Because BMI does not show the actual percentage of fat and muscle. For example, the BMI of a muscular athlete may be the same as that of an obese, untrained person. They will weigh the same, but the percentage of fat, appearance, and health risks are very different.

Also, BMI does not take gender or age into account. The index formula has been made universal to make it easier to conduct large-scale studies. At the same time, the amount of fat in women and men differs by 10-15% on average.

In addition, the proportions of muscle and fat tissue in the body change. With age, the metabolism slows down, and the decay of muscle tissue and deposition of fat tissue begins. Therefore, to draw the right conclusions, it is necessary to take into account a person’s sex and age.

BMI does not take into account a person’s three-dimensionality. Changes in height and weight are not linear. People who are not tall show that they are slimmer than they are, and taller people believe that they are fatter.

BMI Calculator

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Your BMI is......

less than 18.5:Underweight
18.5 - 24.9:Normal weight
25 - 29.9:Overweight
30 - 34.9:Class I Obese
35 - 39.9:Class II Obese
40 upwards:Class III Obese


BF – Body Fat Calculator

It’s not enough to focus on your body weight to know if you need to burn fat. This is because your ideal weight is highly dependent on your physique. It is much more correct and accurate to measure the proportion of body fat.

In normal life, in untrained people, the normal percentage of fat is as follows:

– In women – 21-33%.

– In men – 8-19%.

These numbers can be considered subjective because the numbers have been changing over the years, and while the critical rates are more or less clear (the closer to zero the rate is, the more critical it is), the rates changed in different countries, in different years. Some studies ten years earlier considered the lower limit of the norm for men to be 10% and for women 15%.

So, the percentage of fat in bodybuilders averages 4-6%. This can be dangerous for health. Even 8% is not enough for competitions, given the current trends and requirements. 

If we talk about women, for the fitness category fat can be 8-12% and in bikinis up to 15%.

Body Fat Calculator

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Your body fat is ......

Recommended amount:20-25%8-14%
Adults in United States, average :22-25%15-19%
Obese :30+%25+%


Daily Water Intake Calc

This calculator estimates your intake of clean drinking water and mineral therapeutic table water. This is the amount of water you should drink in addition to tea, coffee, juices, and other drinks.

Proper water consumption helps digestion, normalizes weight, improves skin color and condition. It is recommended to drink 30 minutes before meals and between meals.

Daily Water Intake Calc

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you should drink ...... of water per day