Distribution
Spread protein across 3–5 meals with 20–40g per meal to optimize muscle protein synthesis throughout the day.
Fuel the work you put in.
Protein Calculator for Muscle Gain
Find your optimal daily protein target for maximizing muscle growth and hypertrophy. Based on the 1.6–2.2 g/kg range supported by sports nutrition research.
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Strength starts with a plan.
Built around your trainingYour body. Your range.
Your next strong day.
Your next strong day.
Strength-focused range
Personalized daily target
Per-meal planning
Research-based guidance
YOUR TRAINING STARTING POINT
Make your training count.
Your details in.
A focused protein target out.
Enter your details
Adjust the fields, then calculate your daily protein target below.
THE SCIENCE BEHIND YOUR TARGET
How Much Protein Do You Need to Build Muscle?
Building muscle requires a combination of resistance training and adequate protein intake. Research consistently shows that consuming 1.6–2.2 grams of protein per kilogram of body weight per day is optimal for maximizing muscle protein synthesis when combined with progressive resistance training.
This range — approximately 0.7–1.0 grams per pound — is supported by multiple meta-analyses and position statements from international sports nutrition organizations. Going above 2.2 g/kg has not been shown to provide additional muscle-building benefits in most studies.
1.6 g/kgMinimum
1.8 g/kgRecommended
2.2 g/kgUpper range
MAKE THE DAILY TARGET WORK
Protein Timing for Muscle Growth
Post-Workout
Consume 20–40g of protein within a few hours of training. The exact timing window is flexible — total daily intake matters more.
Before Bed
A protein-rich snack before sleep (e.g., casein or cottage cheese) can support overnight muscle recovery and growth.
PUT THE RANGE IN PERSPECTIVE
Muscle Gain Protein Targets by Body Weight
| Body Weight | Minimum Effective | Recommended | Upper Range |
|---|---|---|---|
| 60 kg / 132 lb | 96 g | 108 g | 132 g |
| 75 kg / 165 lb | 120 g | 135 g | 165 g |
| 90 kg / 198 lb | 144 g | 162 g | 198 g |
| 105 kg / 231 lb | 168 g | 189 g | 231 g |
Minimum uses 1.6 g/kg, recommended uses 1.8 g/kg, and upper range uses 2.2 g/kg.
WHEN TO AIM HIGHER
When to Use the Higher End
High Training Volume
Use 1.8-2.2 g/kg when you lift 4-6 days per week, train close to failure, or are adding volume during a focused hypertrophy block.
Lean Bulking
If your calorie surplus is small, protein consistency matters more because total energy is not high enough to cover repeated missed protein meals.
Plant-Based Diets
Vegan and mostly plant-based diets may benefit from the upper half of the range due to lower average digestibility and amino acid density.
Cutting While Lifting
If you are trying to gain or keep muscle while losing fat, use the weight-loss or recomp calculators so calorie deficit context is included.
UNDERSTAND THE MATH
Formula Used for Muscle-Gain Protein
The muscle-gain calculator applies the hypertrophy range to effective body weight, then activity level nudges the recommendation toward the high end when training volume is higher.
Effective weightin kilograms×g/kg targetfor your training=Daily proteinin grams
| Input | Formula | How it is used |
|---|---|---|
| Minimum effective | effective body weight in kg × 1.6 g/kg | A strong starting point for most lifters who are eating enough calories. |
| Recommended | effective body weight in kg × 1.8 g/kg | The default middle target for consistent resistance training. |
| Upper range | effective body weight in kg × 2.2 g/kg | Most useful for high-volume training, lean bulking, plant-based diets, or cutting while lifting. |
Targets above the upper range rarely add muscle-building benefit for healthy lifters who already eat enough total calories.
FROM RANGE TO ROUTINE
Worked Example for Muscle Gain
75 KG · FOUR TRAINING DAYS · FOUR MEALS
For a 75 kg lifter training four days per week:
- 1. Minimum: 75 kg × 1.6 g/kg = 120 g/day.
- 2. Recommended: 75 kg × 1.8 g/kg = 135 g/day.
- 3. Upper range: 75 kg × 2.2 g/kg = 165 g/day.
- 4. Across four meals, 135 g/day is roughly 34 g per meal.
A practical target is 135-150 g/day unless appetite, digestion, or calories make that difficult.
THE RIGHT TOOL FOR YOUR QUESTION
When to Use This Calculator
Use this page for hypertrophy
Best when lifting progress and muscle gain are the main goal.
Explore calculatorUse athletes calculator for sport demands
Better when endurance, team sport, or mixed training changes fueling needs.
Explore calculatorUse bulking calculator for calories
Better when you also need surplus calories and full macros.
Explore calculatorUse weight-loss calculator while cutting
Better when you are in a calorie deficit and trying to keep muscle.
Explore calculator KEEP LEARNING
Matching Guides
THE EVIDENCE BEHIND THE RANGE
Sources reviewed
- International Society of Sports Nutrition Position Stand: protein and exercise - Journal of the International Society of Sports Nutrition
- Protein supplementation and resistance training meta-analysis - British Journal of Sports Medicine / PubMed
- International Society of Sports Nutrition Position Stand: nutrient timing - PubMed
A LITTLE MORE CLARITY
Frequently Asked Questions
How much protein do I need to build muscle?
Research consistently supports 1.6-2.2 g of protein per kg of body weight per day for maximizing muscle growth when combined with resistance training. Going above 2.2 g/kg has not been shown to provide additional muscle-building benefits in most studies.
Is 2.2 g/kg of protein safe for muscle gain?
Yes, 2.2 g/kg (about 1 g per pound) is well within safe limits for healthy individuals. Multiple meta-analyses and position statements from sports nutrition organizations support this range for athletes and those doing regular resistance training.
When should I eat protein for muscle gain?
Distributing protein intake evenly across 3-5 meals throughout the day is more important than exact timing. Having 20-40 g of protein within a few hours of training can support recovery, but total daily intake matters most for muscle growth.
Do I need protein supplements to build muscle?
No. Whole food sources of protein are perfectly effective for muscle gain. Supplements like whey protein are convenient for meeting daily targets but are not required. Focus on hitting your total daily protein goal from any combination of foods and supplements.
Disclaimer: This calculator provides estimates based on published research. Individual results vary. Consult a registered dietitian or healthcare provider for personalized guidance, especially if you have health conditions.