Protein Intake Calculator
Find your daily protein needs based on your weight, activity level, and fitness goals.
* All calculations are approximate.
How Protein Intake Calculator Works?
Find your daily protein needs based on your weight, activity level, and fitness goals.
Enter your body weight, select your activity level, and choose your fitness goal.
The calculator multiplies your weight by a protein factor based on your activity level (0.8g/kg for sedentary up to 2.0g/kg for athletes).
The result is further adjusted by your fitness goal — higher protein for muscle gain, moderate for weight loss.
Daily protein is divided by 3 to give a per-meal target for optimal absorption.
Protein calories are calculated (4 kcal per gram) and shown as a percentage of a standard 2000 calorie diet.
Formula Used
Daily Protein (g) = Weight (kg) x Activity Factor x Goal Multiplier | Protein Calories = Protein (g) x 4
Spreading protein evenly across meals (20-40g per meal) maximizes muscle protein synthesis. Both animal and plant sources can meet your protein needs when properly planned.
Important — Read Before You Decide
- Protein is essential for building and repairing muscles, bones, skin, and organs
- The recommended daily allowance (RDA) is 0.8g per kg of body weight for sedentary adults
- Athletes and active individuals need significantly more protein than sedentary people
- Protein needs increase during pregnancy, breastfeeding, injury recovery, and aging
- Spreading protein intake evenly across meals improves absorption and muscle synthesis
- Both animal and plant sources can meet protein requirements when properly planned
- Excess protein is not stored as muscle — your body converts it to energy or fat
- Older adults need more protein per kg to prevent age-related muscle loss (sarcopenia)
What Happens If You Ignore These?
- Insufficient protein intake leads to muscle wasting, fatigue, and weakened immunity
- Low protein diets can slow wound healing and increase recovery time from illness
- Chronic protein deficiency impairs hair, skin, and nail health
- Inadequate protein during weight loss causes excessive muscle loss instead of fat loss
- Very high protein intake over long periods may strain kidneys in those with pre-existing conditions
Smart Tips
- Include a protein source in every meal and snack for steady intake
- Aim for 20-40g of protein per meal to maximize muscle protein synthesis
- Combine plant proteins (beans + rice) to get all essential amino acids
- Consume protein within 1-2 hours after exercise for optimal recovery
- Choose lean protein sources like chicken, fish, eggs, legumes, and Greek yogurt
- Track your intake for a week to see if you are meeting your protein needs
Frequently Asked Questions
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