How much protein do I need per day?

The recommended daily protein intake varies based on your weight, activity level, and goals. A general guideline is 1.6-2.2 grams per kilogram of body weight for active individuals. Use our calculator above to get a personalized recommendation.

Can I eat too much protein?

For healthy individuals, consuming high amounts of protein is generally safe. However, extremely high intakes (over 3g per kg) offer no additional benefits and may stress the kidneys in people with pre-existing conditions. Balance is key.

When is the best time to eat protein?

Spreading protein intake evenly across meals (20-40g per meal) is more effective for muscle protein synthesis than consuming it all at once. Eating protein within 2 hours post-workout can also optimize recovery.

What are the best sources of protein?

High-quality protein sources include lean meats, fish, eggs, dairy, legumes, tofu, and tempeh. Animal proteins are complete proteins containing all essential amino acids, while plant proteins can be combined to achieve the same.

Do I need protein supplements?

Most people can meet their protein needs through whole foods. Supplements like whey or plant-based protein powders are convenient but not necessary. They're useful when you struggle to meet your goals through food alone.

How much protein do I need per day?

The recommended daily protein intake varies based on your weight, activity level, and goals. A general guideline is 1.6-2.2 grams per kilogram of body weight for active individuals. Use our calculator above to get a personalized recommendation.

Can I eat too much protein?

For healthy individuals, consuming high amounts of protein is generally safe. However, extremely high intakes (over 3g per kg) offer no additional benefits and may stress the kidneys in people with pre-existing conditions. Balance is key.

When is the best time to eat protein?

Spreading protein intake evenly across meals (20-40g per meal) is more effective for muscle protein synthesis than consuming it all at once. Eating protein within 2 hours post-workout can also optimize recovery.

What are the best sources of protein?

High-quality protein sources include lean meats, fish, eggs, dairy, legumes, tofu, and tempeh. Animal proteins are complete proteins containing all essential amino acids, while plant proteins can be combined to achieve the same.

Do I need protein supplements?

Most people can meet their protein needs through whole foods. Supplements like whey or plant-based protein powders are convenient but not necessary. They're useful when you struggle to meet your goals through food alone.

How Much Protein Do You Need? 2026 Guide

Protein is essential for muscle growth, recovery, and overall health. The amount you need depends on your body weight, how active you are, and what you're trying to achieve. This guide breaks down the science and gives you a personalized recommendation.

Calculate Your Protein Needs

Protein Calculator

The Science Behind Protein Requirements

Research shows that protein requirements vary significantly based on individual factors. The outdated RDA of 0.8g/kg was established to prevent deficiency, not to optimize health or performance.

Modern research suggests active individuals benefit from 1.6-2.2g of protein per kilogram of body weight. Athletes and those in a caloric deficit may need even more to preserve muscle mass.

Protein Needs by Activity Level

Sedentary (little exercise): 1.2-1.4g per kg body weight
Moderately active (3-4 workouts/week): 1.6-1.8g per kg body weight
Very active (5+ workouts/week): 1.8-2.0g per kg body weight
Athletes/Bodybuilders: 2.0-2.4g per kg body weight

Adjusting for Your Goals

Building Muscle

When building muscle, aim for the higher end of recommendations (2.0-2.2g/kg). Combined with resistance training and a slight caloric surplus, this maximizes muscle protein synthesis.

Losing Weight

During weight loss, protein becomes even more important. Higher intake (2.0-2.4g/kg) helps preserve muscle mass while in a caloric deficit and increases satiety.

Maintaining

For maintenance, moderate protein intake (1.6-1.8g/kg) is sufficient to support muscle mass and overall health.

Protein Timing Tips

Spread it out: Aim for 20-40g per meal, 3-5 times daily
Post-workout: Consume protein within 2 hours after training
Before bed: Casein or slow-digesting protein can support overnight recovery

Frequently Asked Questions

Evidence & references

Reviewed and updated September 4, 2026

Figures in this guide come from the numbered sources below. Individual needs vary — this is educational content, not medical advice.

Sources

1.Institute of Medicine, 2005. Dietary Reference Intakes for energy, carbohydrate, fiber, fat, fatty acids, cholesterol, protein and amino acids. National Academies Press.
2.Jäger et al., 2017. ISSN position stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14, 20.
3.Morton et al., 2018. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. British Journal of Sports Medicine, 52(6), 376-384.
4.Phillips & Van Loon, 2011. Dietary protein for athletes: from requirements to optimum adaptation. Journal of Sports Sciences, 29(S1), S29-S38.
5.Moore et al., 2009. Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise. American Journal of Clinical Nutrition, 89(1), 161-168.
6.Review, 2024. High protein diets and glomerular hyperfiltration in athletes and bodybuilders. Sports Medicine, 54(10).