Last updated: August 2025
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult a doctor or registered dietitian before changing your diet.
How Much Protein Per Pound of Body Weight?
For building muscle, consume 0.7 to 0.8 grams of protein per pound of body weight daily. For general health, the minimum is 0.36 grams per pound. That covers everyone from sedentary individuals to athletes. We used to believe the 'one gram per pound' rule ourselves until we analyzed the actual studies. It's a myth. Our review of the scientific literature, including Menno Henselmans' meta-analysis, shows the maximum benefit for muscle growth tops out at 0.82 grams per pound. Beyond that, your body just burns the extra as fuel or stores it as fat.
Our protein recommendations are derived from a systematic analysis of peer-reviewed meta-analyses (including Henselmans 2022) and expert guidelines from the Mayo Clinic, Examine.com, and registered dietitians like Chris Barrett, RDN.
Sedentary adults need only 0.36 g/lb (the RDA). That's 54 grams for a 150-pound person. Active adults and those over 40 need more: 0.5 to 0.7 g/lb depending on activity level. For muscle building, 0.7 to 0.8 g/lb is the sweet spot. Going above 0.82 g/lb doesn't help natural trainees. Older adults trying to lose weight or highly active people can go up to 1.1 g/lb, according to Examine.com. Most people in the U.S. already get enough protein. Men aged 19 to 59 often exceed recommendations, says the Mayo Clinic.
What Is the RDA for Protein?
The RDA for a sedentary adult is 0.8 grams per kilogram of body weight. Since a kilogram is 2.2 pounds, that comes out to 0.36 grams per pound. The Mayo Clinic gives a concrete example: a person who weighs 165 pounds, or 75 kilograms, should consume about 60 grams of protein per day. That's the bare minimum to prevent deficiency.
If you're active, you need more. The Mayo Clinic breaks it down: regular exercisers need 1.1 to 1.5 grams per kilogram (0.5 to 0.68 g/lb). People who lift weights regularly or train for endurance events need 1.2 to 1.7 g/kg (0.55 to 0.77 g/lb). Once you pass age 40 to 50, your protein needs climb to 1 to 1.2 g/kg (0.45 to 0.55 g/lb) to fight sarcopenia, the gradual muscle loss of aging. Chris Barrett, a registered dietitian with Hartford HealthCare, tells patients aiming to build muscle to hit 0.7 grams per pound. 'So if you weigh 175 pounds, that's about 125 grams per day,' he says. That's more than the RDA but nowhere near the extreme 2 grams per pound you see in fitness forums.
Examine.com says older adults who want to lose weight or highly active adults who want to build muscle should aim for 1.6 to 2.4 grams per kilogram per day. That's 0.73 to 1.1 grams per pound. The higher end is for people in a calorie deficit trying to preserve muscle while dropping fat.
How to Calculate Your Protein Needs
Here's how to calculate your protein needs. Weigh yourself using your current body weight in pounds. If you're overweight, adjust your weight to a healthier target before calculating, says the Mayo Clinic. A dietitian can help with that. Pick your goal. Sedentary? Use 0.36 g/lb. Active? Use 0.5 to 0.7 g/lb. Building muscle? Use 0.7 to 0.8 g/lb. Cutting weight? Use 0.8 to 1.0 g/lb, per Barrett's advice. Do the math. Multiply your body weight in pounds by your chosen number. Example: 180 pounds x 0.7 = 126 grams per day. Split it over meals. Try to get 15 to 30 grams per meal, spreading protein evenly across breakfast, lunch, and dinner. The Mayo Clinic says more than 40 grams in one sitting isn't any better than 30. Eat real food first. Chicken, fish, eggs, Greek yogurt, beans, lentils, tofu. The Mayo Clinic recommends getting protein from whole foods rather than supplements, unless you're short on time or calories.
Can You Eat Too Much Protein?
The biggest mistake we see is people chugging protein shakes on top of a diet that already has plenty of protein. Most Americans already get enough. Men aged 19 to 59 actually exceed recommendations, especially from meat, poultry, and eggs. Extra protein doesn't build more muscle without the training to go with it. Excess calories from protein get stored as fat. High-protein foods often come with saturated fat. The Mayo Clinic warns that excess protein can lead to elevated blood lipids and heart disease, especially if you're loading up on fatty meats. Choose lean sources. You don't need to down a shake within 30 minutes of your workout. Barrett says eating protein within an hour or two of training with a regular meal works fine. What matters most is your total daily intake.
If you're never hungry for that much protein, try splitting it across more meals. Add a hard-boiled egg or Greek yogurt to breakfast. A banana, Greek yogurt, and a boiled egg gives you about 19 grams, says the Mayo Clinic. If you're plant-based and worried about getting enough, it takes more planning, but it's doable. Mix legumes, whole grains, nuts, seeds, and soy throughout the day. Plant proteins are lower in some amino acids, so variety is key. If you're on a weight-loss drug and skipping meals, that's a recipe for muscle loss. The Mayo Clinic stresses eating three meals a day with a good protein source each time. Don't skip meals. If you're over 50 and losing muscle, increase your protein to 1 to 1.2 grams per kilogram (about 0.45 to 0.55 g/lb) and keep lifting weights. Protein alone won't build muscle without strength training.
Frequently Asked Questions
What is the RDA for protein?
The RDA is 0.8 grams per kilogram of body weight, which equals 0.36 grams per pound. For a 150-pound adult, that's about 55 grams per day, or roughly an 8-ounce steak.
How much protein per pound for muscle growth?
The sweet spot for building muscle is 0.7 to 0.8 grams per pound. Research consistently finds no additional benefit above 0.82 grams per pound for natural trainees.
Is too much protein bad for you?
Yes. The Mayo Clinic says excessive intake is more than 2 grams per kilogram (0.9 g/lb) daily. Extra protein is stored as fat or used for energy, and it can strain kidneys in predisposed individuals. High-protein diets often come with excess saturated fat.
Do protein needs increase with age?
Yes. Once you're between 40 and 50, sarcopenia begins. Protein needs rise to 1 to 1.2 grams per kilogram, or 75 to 90 grams for a 165-pound person, according to the Mayo Clinic.
How much protein for weight loss?
Barrett recommends 0.8 to 1 gram per pound of body weight during a calorie deficit, combined with weight training, to preserve muscle while losing fat. For older adults, Examine.com suggests up to 1.1 g/lb.
Do you need protein supplements?
Probably not. Most people can meet their needs with whole foods. If you do use a supplement, the Mayo Clinic advises picking one with 2 grams or less of saturated fat, 5 grams or less of sugar, about 200 calories or fewer, and no trans fat. Look for third-party certifications like NSF Certified for Sport.
If your goal is sustainable fat loss, our guide on [/how-to-lose-weight] offers a full framework for combining protein targets with caloric balance. And if you're considering shakes, our review of [/protein-powder-for-weight-loss] covers which supplements actually support muscle preservation without adding empty calories.
