Protein Intake Calculator for Muscle Growth
Enter your details below to estimate how much protein you should eat each day to support muscle gain and recovery.
How much protein do you need to gain muscle?
If your goal is to build muscle, the most evidence-based daily target for most people is roughly 1.6 to 2.2 grams of protein per kilogram of body weight (about 0.7 to 1.0 grams per pound). This calculator gives you a personalized range based on body weight, training frequency, age, and goal.
Protein supports muscle protein synthesis, recovery, and adaptation to resistance training. While calories, training quality, sleep, and consistency all matter, getting protein right is one of the highest-impact nutrition moves you can make.
How to use this protein calculator
- Enter your current body weight.
- Choose pounds or kilograms.
- Select your goal (lean bulk, recomposition, or cutting).
- Pick how many days you lift per week.
- Add your age and number of protein feedings for better per-meal guidance.
Your result includes a daily range and a practical “best target” in the middle of that range.
Understanding your result
1) Daily protein range
The range gives flexibility. You do not need to hit one exact number every day. Staying near the middle of the range most days is usually enough for excellent progress.
2) Best target (middle value)
This is a practical single number for meal planning. If your schedule is busy, aim for this number and keep your routine simple.
3) Protein per meal
Splitting protein across meals tends to work better than eating most of it at night. A common strategy is 3–5 feedings, each with a meaningful protein dose.
Protein targets by goal type
- Lean muscle gain: generally around 1.6–2.2 g/kg/day.
- Body recomposition: often better at 1.8–2.4 g/kg/day.
- Cutting phase: usually highest, around 2.2–2.8 g/kg/day, to protect lean mass.
The leaner you are, the harder you train, and the deeper your calorie deficit, the more useful the higher end can be.
What to eat: high-protein food ideas
Animal-based options
- Chicken breast, turkey, lean beef, pork tenderloin
- Greek yogurt, cottage cheese, milk
- Eggs and egg whites
- Fish (salmon, tuna, cod, shrimp)
- Whey or casein protein powder
Plant-based options
- Tofu, tempeh, edamame
- Lentils, chickpeas, beans
- Seitan and textured vegetable protein
- Soy milk and high-protein plant yogurts
- Pea/rice/soy protein blends
Common mistakes that hurt muscle gain
- Undereating calories while expecting rapid growth.
- Inconsistent protein intake (high one day, very low the next).
- Skipping post-workout nutrition after hard sessions.
- Relying on supplements alone instead of whole-food meals.
- Ignoring progressive overload in the gym.
Example
A person weighing 180 lb (81.6 kg) aiming for lean muscle gain often does well around 130–180 g/day, with a practical target near 155 g/day. Split over 4 meals, that is roughly 35–40 g per meal.
FAQ
Do I need protein shakes?
No. Shakes are optional convenience tools. Whole foods can cover your needs if you plan meals well.
Is more protein always better?
Not usually. Going far above recommended ranges has diminishing returns for muscle gain. Consistent training, calories, and sleep become bigger bottlenecks.
Do carbs and fats matter too?
Yes. Carbs support training performance and recovery; fats support hormones and health. Protein is crucial, but balanced macros and total energy intake drive results.
Bottom line
Use the calculator to set a realistic daily protein target, then execute it consistently. Pair that with progressive resistance training, enough calories, and solid sleep, and your muscle-building results will be dramatically better over time.