How Much Protein Do You Need? Targets by Goal, Body Weight and Diet Style
Not medical advice. This article is general education, not a diagnosis or treatment plan. Talk to your doctor or a registered dietitian before making major changes to your diet, training or medication, especially if you have a health condition, are pregnant, or take prescription drugs.
Protein targets online range from "the RDA is plenty" to "one gram per pound, minimum." Both camps have a point, because they answer different questions. This guide separates the minimum you need to stay healthy from the amount that helps when you are training or dieting, and turns both into numbers you can use.
The RDA versus ranges for active people
The Recommended Dietary Allowance for adults is 0.8 g of protein per kilogram of body weight per day, set by the National Academies. It is the amount that covers the basic needs of nearly all healthy adults. It is a floor, not a target for people trying to build or keep muscle.
For people doing resistance training, a 2018 meta-analysis by Morton and colleagues in the British Journal of Sports Medicine found that gains in lean mass leveled off at around 1.6 g/kg/day, with the upper end of the confidence interval near 2.2 g/kg. The International Society of Sports Nutrition recommends 1.4 to 2.0 g/kg/day for most exercising people. Higher intakes within that range are most useful during a calorie deficit, when the body is more likely to break down muscle.
FitStatsHub's Health Report shows a protein floor of 1.2 g/kg, a little above the RDA, as a baseline for everyone. The meal plan then sets protein as a share of your calorie target depending on your goal.
Targets by goal
| Goal in the planner | Reasonable target | Why |
|---|---|---|
| Lose Weight | 1.6 to 2.2 g/kg | Helps preserve muscle and keeps you fuller in a deficit |
| Get Ripped | 1.8 to 2.2 g/kg | Leaner people in a deficit are at more risk of losing muscle |
| Build Muscle | 1.6 to 2.0 g/kg | Benefits level off near 1.6 g/kg in the Morton analysis |
| Gain Weight | 1.4 to 1.8 g/kg | A surplus already supports growth; leave room for carbohydrate and fat |
The same numbers by body weight:
| Body weight | 0.8 g/kg (RDA) | 1.2 g/kg (planner floor) | 1.6 g/kg | 2.2 g/kg |
|---|---|---|---|---|
| 132 lb (60 kg) | 48 g | 72 g | 96 g | 132 g |
| 154 lb (70 kg) | 56 g | 84 g | 112 g | 154 g |
| 176 lb (80 kg) | 64 g | 96 g | 128 g | 176 g |
| 198 lb (90 kg) | 72 g | 108 g | 144 g | 198 g |
| 220 lb (100 kg) | 80 g | 120 g | 160 g | 220 g |
In pounds, 1.6 to 2.2 g/kg is about 0.7 to 1.0 g per pound. "One gram per pound" sits at the top of the useful range, not the bottom. If you are carrying a lot of extra body fat, base the calculation on your goal weight rather than your current weight, or the number will be higher than you need.
A note on the planner's numbers: because the meal plan expresses protein as a percentage of calories (35% for Lose Weight, 40% for Get Ripped, 30% for Build Muscle, 25% for Gain Weight), people with a high calorie target can see a figure above 2.2 g/kg. A 200 lb man on "Build Muscle" at about 2,990 kcal would see roughly 224 g. That is more than research suggests is needed. You can reasonably cap protein at the top of the range for your goal and move the extra calories to carbohydrate.
Splitting protein across meals
Muscle building responds to protein spread through the day. A 2018 review by Schoenfeld and Aragon suggests about 0.4 g/kg per meal across at least four meals for people trying to maximize muscle gain. For a 70 kg person, that is about 28 g per meal. Matching the planner's meal options:
| Daily target | 3 meals | 4 meals | 5 meals |
|---|---|---|---|
| 112 g | 37 g each | 28 g each | about 22 g each |
| 140 g | about 47 g each | 35 g each | 28 g each |
| 170 g | about 57 g each | about 43 g each | 34 g each |
If you eat three meals, larger portions work fine. The daily total matters more than perfect timing.
Protein per 100 kcal for common foods
Grams of protein per 100 kcal shows how much protein a food delivers for its calories, which matters most in a deficit. Figures are rounded from USDA FoodData Central and vary by brand and preparation.
| Food | Typical serving | Protein per serving | Protein per 100 kcal | Suits |
|---|---|---|---|---|
| Chicken breast, cooked | 100 g | about 31 g | about 19 g | Omnivore, halal if certified |
| Tuna, canned in water | 100 g | about 25 g | about 22 g | Omnivore, pescatarian |
| Nonfat plain Greek yogurt | 170 g | about 17 g | about 17 g | Vegetarian |
| Cottage cheese, 1% fat | 113 g (1/2 cup) | about 14 g | about 17 g | Vegetarian |
| Eggs | 1 large | about 6 g | about 9 g | Vegetarian |
| Firm tofu | 100 g | about 17 g | about 12 g | Vegan |
| Tempeh | 100 g | about 20 g | about 10 g | Vegan |
| Edamame, shelled | 100 g | about 12 g | about 10 g | Vegan |
| Lentils, cooked | 1 cup (198 g) | about 18 g | about 8 g | Vegan |
| Black beans, cooked | 1 cup (172 g) | about 15 g | about 7 g | Vegan |
| Peanut butter | 2 tbsp (32 g) | about 7 g | about 4 g | Vegan |
Lean meats, fish, and low-fat dairy are the most protein-dense. Beans and lentils deliver less protein per calorie but add fiber. Soy foods sit in between. For halal plans, poultry, beef or lamb need halal certification; fish, eggs, dairy and plant proteins are usually straightforward.
Two sample days at about 140 g
Omnivore
- Breakfast: 3 eggs scrambled with spinach, 1 slice whole-grain toast (about 22 g)
- Lunch: 150 g cooked chicken breast, rice, and salad (about 46 g)
- Snack: 170 g nonfat Greek yogurt with berries (about 17 g)
- Dinner: 150 g salmon, potatoes, broccoli (about 33 g)
- Evening: 1/2 cup cottage cheese (about 14 g)
- Plus about 8 g from rice, vegetables and other foods. Total: about 140 g
Vegan
- Breakfast: oats made with 1 cup soy milk, topped with 2 tbsp peanut butter (about 20 g)
- Lunch: 1 cup cooked lentils with quinoa and roasted vegetables (about 26 g)
- Snack: 200 g shelled edamame (about 24 g)
- Dinner: 200 g firm tofu stir-fry with rice (about 35 g)
- Evening: pea protein shake, one scoop (about 20 to 25 g)
- Plus about 10 to 15 g from vegetables, rice and seeds. Total: about 137 to 145 g
The vegan day takes more planning and more food volume, and a protein powder makes it much easier. Combining different plant proteins through the day covers the full range of essential amino acids.
Kidney health: myths and real cautions
For healthy adults, a 2018 meta-analysis by Devries and colleagues found that higher-protein diets did not worsen kidney function compared with normal or lower intakes. The concern is real for people who already have chronic kidney disease, where NIDDK advises working with a dietitian on how much protein to eat. If you have kidney disease, diabetes with kidney involvement, or reduced kidney function on a blood test, ask your doctor before raising protein.
FAQ
Can I absorb more than 30 g of protein in one meal?
Yes. You digest and absorb all of it; the debate is about how much goes toward building muscle at once. Larger meals still count toward your daily total.
Do I need protein shakes?
No. They are a convenience. Whole foods bring fiber and micronutrients that shakes lack.
Does protein need change with age?
Older adults may need more protein per meal to get the same muscle-building response, which is one reason the 1.2 g/kg floor is a sensible minimum for adults over about 65 who are otherwise healthy.
Related reading: sizing a calorie deficit and your first 4-week workout plan. To see your own targets, run the planner.
Sources
- National Academies: Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids
- Morton RW, et al. (2018), British Journal of Sports Medicine
- Jäger R, et al. (2017), ISSN Position Stand: protein and exercise
- Schoenfeld BJ, Aragon AA (2018), How much protein can the body use in a single meal?
- Devries MC, et al. (2018), Changes in kidney function do not differ between healthy adults consuming higher- compared with lower- or normal-protein diets
- NIDDK: Eating right for chronic kidney disease
- USDA FoodData Central