🧮 Protein Needs Calculator
Protein is the building material for muscles. Different goals require different amounts of protein.
🎯 What the Calculator Shows
The calculator uses body weight and the selected goal to calculate a daily protein amount range in grams. This is a planning guideline: it shows how much protein per day matches your goal, not exactly how much your body needs. Adjust the number according to training volume, total calorie intake, and how you feel.
📏 How to Read the Number
| Goal | Guideline Amount (g/kg) | What This Means in Practice |
|---|---|---|
| Weight Maintenance | 1,2–1,6 | Baseline level when training is moderate |
| Muscle Gain | 1,6–2,2 | Calorie surplus is more important than maximum protein intake |
| Intense Sports and Endurance | 1,4–1,8 | It is enough to adjust according to training volume |
| Weight Loss | 2,0–2,7 | A higher amount helps preserve muscle during a calorie deficit |
The ranges are taken from the same model used by the calculator, so the table matches the result obtained. Individual differences are greater than the table's precision.
⏱️ Distribution Throughout the Day
- 3–5 meals with roughly equal amounts, convenient for most; a practical guideline — about 0.4 g/kg per meal.
- The daily total is most important: if the total amount is sufficient, the exact number of meals provides no additional benefit (see meal frequency).
- Before Sleep slower-digesting proteins may be suitable, but this is not necessary — it is enough that the daily total is reached.
- Plant sources: a different amino acid profile, so it is worth combining legumes with grains and eating a variety (see lentils).
⚠️ Where the Metric Has Limits
- More does not equal better: above a certain amount, the additional benefit is small — calories, training, and sleep are more important.
- Protein Powder — Convenience, not a necessity; the same grams can be obtained from food.
- "Anabolic window" is not narrow: after training, the total daily amount matters first, not minutes.
- Health Conditions: in case of kidney or liver disease, protein intake must be coordinated with a doctor.
- Fluids and Digestion: when increasing intake, it is worth drinking more water (see water needs).
🙋 FAQ
Does a High Protein Intake Harm the Kidneys? In healthy people, there is no clear evidence of harm, but in case of kidney disease, the amount must be coordinated with a doctor.
How Much Protein per Meal at Most? A widely used guideline is about 0.4 g/kg; larger amounts at one time provide no additional benefit for muscle synthesis.
Is Protein Before Bed Necessary? Not necessary — it is one of the options for reaching the daily total, not a mandatory rule.
Does Protein Disappear During Cooking? Normal boiling and baking do not remove them, only change the structure.
📚 Scientific Basis
The calculator is based on the range that is considered sufficient in scientific literature to promote muscle growth:1,6–2,2 g of protein per kilogram of body weight per day. A higher intake is not harmful, but most studies find no additional benefit for muscle growth.
More important than the total amount is distribution throughout the day — 20–40 g per meal so that each meal provides a sufficient signal for muscle synthesis.
Source: Anita Bean, “The Complete Guide to Sports Nutrition” (9th edition) (p. 273); NSCA guide “Guide to Sport and Exercise Nutrition”.