Protein Calculator — How Much Protein Do You Need Daily? — USA 2026
Calculate your optimal daily protein intake based on weight goals and activity level. Essential for muscle building weight loss and overall health.
Protein is the most important macronutrient for body composition. Research shows optimal intakes of 1.6-2.2 g per kg of bodyweight for muscle building 1.2-1.6 g/kg for active individuals and 0.8 g/kg minimum for sedentary adults. During weight loss higher protein intake (2.0-2.4 g/kg) preserves muscle mass. Most people significantly undereat protein which slows metabolism and impairs recovery.
How much protein do I need to build muscle?
For muscle building aim for 1.6-2.2 grams per kg of bodyweight daily. A 75 kg person needs 120-165 grams of protein per day spread across 3-5 meals. Going above 2.2 g/kg shows minimal additional benefit. Quality protein sources include chicken breast (31g per 100g) eggs (6g each) Greek yogurt (10g per 100g) lentils (9g per 100g cooked) and whey protein (24g per scoop).
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Daily Protein Intake Calculator
About This Health Metric
This calculator uses established medical formulas to estimate your health metrics. While these calculations provide useful benchmarks for general health monitoring, they are based on population averages and may not account for individual factors such as body composition, genetics, medical conditions, or fitness level. Athletes, pregnant women, and individuals with certain health conditions may get results that do not accurately reflect their actual health status. Always consult a healthcare professional for personalized medical advice.
Key Information
| Parameter | Details |
|---|---|
| Sedentary Minimum | 0.8 g per kg bodyweight |
| Active Individual | 1.2 - 1.6 g/kg |
| Muscle Building | 1.6 - 2.2 g/kg |
| Weight Loss | 2.0 - 2.4 g/kg |
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Use Calculator NowFrequently Asked Questions
How much protein do I need to build muscle?
For muscle building aim for 1.6-2.2 grams per kg of bodyweight daily. A 75 kg person needs 120-165 grams of protein per day spread across 3-5 meals. Going above 2.2 g/kg shows minimal additional benefit. Quality protein sources include chicken breast (31g per 100g) eggs (6g each) Greek yogurt (10g per 100g) lentils (9g per 100g cooked) and whey protein (24g per scoop).
Is too much protein bad for kidneys?
For healthy individuals with normal kidney function high protein intake (up to 3 g/kg) has not been shown to cause kidney damage in research studies. However people with existing kidney disease should follow their doctor recommended protein limits. Staying well hydrated when consuming high protein is important as protein metabolism produces urea which requires water for excretion.
Do I need more protein for weight loss?
Yes higher protein during weight loss (2.0-2.4 g/kg) preserves lean muscle mass which keeps your metabolism higher. Studies show people eating higher protein during caloric deficit lose more fat and less muscle compared to those eating lower protein. Protein also increases satiety keeping you fuller longer and reduces cravings making the diet easier to sustain.
How accurate are online health calculators?
Online health calculators use established medical formulas and provide useful estimates for general guidance. However, individual factors like metabolism, medical conditions, and body composition can affect actual results. Always consult a healthcare professional for personalized advice.
What is a healthy BMI range?
BMI between 18.5-24.9 is normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese. BMI does not distinguish between muscle and fat, so athletes may show higher BMI without being overweight.
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Last updated: March 2026