Protein Calculator
The Protein Calculator estimates the daily amount of dietary protein adults require to remain healthy. Children, those who are highly physically active, and pregnant and nursing women typically require more protein. The calculator is also useful for monitoring protein intake for those with kidney disease, liver disease, diabetes, or other conditions in which protein intake is a factor.
What are proteins?
Proteins are one of three primary macronutrients that provide energy to the human body, along with fats and carbohydrates. They are necessary for proper structure and function of tissues and organs, and also act to regulate them. Proteins are comprised of amino acids, which are the building blocks of body tissue.
How much protein do I need?
The amount of protein required daily depends on factors like age, gender, weight, height, and activity level. The recommended range is between 0.8 g/kg and 1.8 g/kg of body weight. Highly active individuals or those looking to build muscle may need more protein.
Foods high in protein
- Animal sources: Eggs, chicken breast, lean beef, fish, milk, Greek yogurt.
- Plant-based sources: Soy products, quinoa, lentils, nuts, seeds, beans.
Table of Contents
What is Protein Calculator
To use the calculator, adjust the input values and click the “Calculate” button. The tool supports various measurement systems, including US Units, Metric Units, and Other Units. Key inputs include:

The Protein Calculator is a tool designed to estimate the daily amount of dietary protein adults need to maintain good health. Certain groups, such as children, highly active individuals, and pregnant or nursing women, often require more protein. Additionally, the calculator is beneficial for monitoring protein intake in individuals with specific health conditions like kidney disease, liver disease, diabetes, or other situations where protein consumption plays a critical role.
- Age: Ranging from 18 to 80 years.
- Gender: Male or female.
- Height: Measured in centimeters or inches.
- Weight: Measured in kilograms or pounds.
- Activity Level: Options range from light exercise (1-3 times per week) to very intense exercise (2+ hours of elevated heart rate activity).
Related Tools:
- Calorie Calculator
- Carbohydrate Calculator
- Fat Intake Calculator
Protein Calculator – What Are Proteins?
Proteins are one of the three primary macronutrients, alongside fats and carbohydrates, that provide energy to the human body. They play a vital role in cell function, tissue and organ structure, and overall regulation of bodily processes. Proteins are composed of amino acids, which are the building blocks of body tissue. There are 20 different amino acids, nine of which are essential and must be obtained through diet, as the body cannot produce them on its own. Foods containing all nine essential amino acids are called complete protein sources, which include animal-based foods (meat, dairy, eggs, fish) and some plant-based options (soy, quinoa, buckwheat).
Proteins can be categorized based on their functions:
- Antibodies: Protect the body from foreign invaders like viruses and bacteria.
- Enzymes: Facilitate chemical reactions and molecule formation.
- Messengers: Transmit signals to regulate body processes.
- Structural Components: Provide the framework for cells and enable movement.
- Transport/Storage Proteins: Move molecules throughout the body.
Given their critical roles, maintaining adequate protein intake is essential for overall health.
Protein Calculator – Much Protein Do I Need?
The daily protein requirement varies based on factors such as age, weight, activity level, and overall energy intake. A commonly cited recommendation is 0.8 grams of protein per kilogram of body weight, which is the minimum amount needed to meet basic nutritional needs. However, active individuals or those aiming to build muscle may benefit from higher intake, ranging from 1.8 to 2 grams per kilogram of body weight.
The recommended protein intake generally falls between 0.8 g/kg and 1.8 g/kg, depending on individual circumstances. For personalized advice, consulting a dietitian, doctor, or fitness professional is recommended.
Protein Calculator – Dietary Allowance (RDA) of Protein by Age
Age Group | Protein Needed (grams/day) |
---|---|
1 – 3 years | 13 |
4 – 8 years | 19 |
9 – 13 years | 34 |
14 – 18 years (Girls) | 46 |
14 – 18 years (Boys) | 52 |
19 – 70+ years (Women) | 46 |
19 – 70+ years (Men) | 56 |
Protin calculator – Extra Protein Requirements for Pregnancy and Lactation
Stage | Safe Intake (grams/day) | Additional Energy Requirement (kJ/day) | Protein : Energy Ratio |
---|---|---|---|
Pregnancy Trimester 1 | 1 | 375 | 0.04 |
Pregnancy Trimester 2 | 10 | 1,200 | 0.11 |
Pregnancy Trimester 3 | 31 | 1,950 | 0.23 |
Lactation (First 6 months) | 19 | 2,800 | 0.11 |
Lactation (After 6 months) | 13 | 1,925 | 0.11 |
Foods High in Protein
Protein can be obtained from a variety of sources, including meat, dairy, and plant-based foods. While animal products are typically complete proteins, plant-based options can also meet protein needs when consumed in combination. Below are examples of high-protein foods:

Complete Protein Sources:
- Animal-Based: Eggs, chicken breast, cottage cheese, Greek yogurt, milk, lean beef, tuna, turkey breast, fish, shrimp.
- Plant-Based: Buckwheat, hummus and pita, soy products (tofu, tempeh, edamame), peanut butter on toast, beans and rice, quinoa, hemp and chia seeds, spirulina.
Incomplete Protein Sources:
- Almonds, oats, broccoli, lentils, Ezekiel bread, chia seeds, pumpkin seeds, peanuts, Brussels sprouts, grapefruit, green peas, avocados, mushrooms.
Protein Content in Common Foods
Food Item | Protein Amount |
---|---|
Milk (1 cup/8 oz) | 8 g |
Egg (1 large/50 g) | 6 g |
Meat (1 slice/2 oz) | 14 g |
Seafood (2 oz) | 16 g |
Bread (1 slice/64 g) | 8 g |
Corn (1 cup/166 g) | 16 g |
Rice (1 cup/195 g) | 5 g |
Dry Beans (1 cup/92 g) | 16 g |
Nuts (1 cup/92 g) | 20 g |
Fruits and Vegetables (1 cup) | 0-1 g |
Pizza (1 slice/107 g) | 12 g |
Hamburger (McDonald Medium) | 20 g |
In conclusion, protein is a crucial nutrient with diverse roles in the body. Meeting daily protein requirements through a balanced diet is essential for maintaining health, and the Protein Calculator is a helpful tool for determining individual needs. More to know