Protein Intake Calculator

Calculate your optimal daily protein needs based on age, weight, activity level, and fitness goals. Get personalized recommendations and meal planning guidance.

Years (18-100)
kg
Current body weight
cm
Your height in centimeters
Sedentary

Little or no exercise

Lightly Active

Light exercise 1-3 days/week

Moderately Active

Moderate exercise 3-5 days/week

Very Active

Hard exercise 6-7 days/week

Extremely Active

Very hard exercise & physical job

Maintain Weight

Keep current weight

Build Muscle

Gain muscle mass

Lose Weight

Reduce body fat

Moderate Protein
Lower End
Moderate
Higher End
Calculating your personalized protein needs...

Understanding Protein Requirements

Protein is an essential macronutrient that plays critical roles in building and repairing tissues, producing enzymes and hormones, and supporting immune function. Determining your optimal protein intake depends on multiple factors including age, activity level, and fitness goals.

Why Protein Matters:

  • Muscle Growth & Repair: Essential for building and repairing muscle tissue
  • Satiety & Weight Management: Helps control appetite and supports fat loss
  • Metabolic Health: Supports metabolic function and hormone production
  • Bone Health: Important for maintaining bone density
  • Immune Function: Needed for antibody production

Protein Guidelines by Goal

Goal Protein Range Recommended Intake Key Considerations
Maintain Weight 1.2 - 1.6 g/kg 1.4 g/kg Supports daily maintenance and general health
Build Muscle 1.6 - 2.2 g/kg 1.8 g/kg Higher intake supports muscle protein synthesis
Lose Weight 1.6 - 2.2 g/kg 2.0 g/kg Preserves muscle mass during calorie deficit
Athletic Performance 1.4 - 2.0 g/kg 1.7 g/kg Supports recovery and adaptation to training
Older Adults (65+) 1.2 - 1.5 g/kg 1.3 g/kg Higher intake combats age-related muscle loss

High-Protein Food Sources

Here are excellent sources of protein to include in your diet:

Chicken Breast
Skinless, cooked
31g / 100g
Salmon
Wild, cooked
25g / 100g
Eggs
Large, whole
6g per egg
Greek Yogurt
Non-fat, plain
10g / 100g
Lentils
Cooked
9g / 100g
Tofu
Firm
8g / 100g
Almonds
Raw
21g / 100g
Whey Protein
Powder, standard
25g per scoop

Timing & Distribution Matters

1

Even Distribution: Spread protein intake evenly across meals (20-40g per meal) for optimal muscle protein synthesis throughout the day.

2

Post-Workout Window: Consume protein within 1-2 hours after exercise to support muscle recovery and growth.

3

Before Bed: Casein protein (found in cottage cheese or casein powder) before sleep can provide a slow-release amino acid supply overnight.

Protein Quality & Digestibility

Not all protein sources are equal. Consider these factors:

  • Complete Proteins: Contain all 9 essential amino acids (animal proteins, soy, quinoa)
  • Protein Digestibility: Animal proteins are generally more digestible than plant proteins
  • Bioavailability: Whey protein has high bioavailability and rapid absorption
  • Combining Plant Proteins: Mix complementary plant proteins (rice + beans) to create complete protein profiles

Calculator Methodology:

  • Based on established scientific research and dietary guidelines
  • Accounts for age, weight, activity level, and fitness goals
  • Uses Mifflin-St Jeor equation for calorie estimation
  • Provides personalized ranges based on individual factors
  • Includes practical meal planning guidance

Frequently Asked Questions

For most healthy individuals, high protein intake (up to 2.2g/kg body weight) is safe. However, people with pre-existing kidney conditions should consult a healthcare provider before increasing protein intake. Excessive protein may also displace other important nutrients from the diet.

Both have benefits. Animal proteins are complete proteins with high bioavailability. Plant proteins offer additional fiber, antioxidants, and are generally lower in saturated fat. A mix of both is often optimal. Vegetarians and vegans should focus on combining complementary plant proteins to ensure adequate essential amino acid intake.

Older adults (65+) generally need more protein per kilogram of body weight compared to younger adults. This is due to age-related anabolic resistance (reduced muscle protein synthesis response to protein intake) and to combat sarcopenia (age-related muscle loss). Recommendations for older adults typically range from 1.2-1.5g/kg body weight.

Protein supplements can be convenient for meeting daily targets, especially for athletes or those with high requirements. However, whole food sources should form the foundation of your protein intake as they provide additional nutrients. Supplements are most useful post-workout or when whole food options aren't convenient.

Cooking doesn't significantly reduce protein content, but it can affect protein digestibility and bioavailability. Moderate cooking generally improves digestibility by denaturing proteins, but excessive high-heat cooking can reduce the availability of some amino acids. Different cooking methods have minimal effect on total protein content.