For most people lifting to build muscle, about 1.6 grams of protein per kilogram of body weight per day is the number to hit, which works out to roughly 0.7 grams per pound. Going higher rarely adds more muscle. Spread it across three to five meals of around 20 to 40 grams each and you have done the part that matters. We get more specific about where that number comes from below, and about what it looks like on a plate, because the range is easy and eating it is the hard part. If you are trying to lose fat at the same time, read building muscle and losing fat together next.
We get this question from almost every new client, usually from someone who has been training hard for months and is frustrated that nothing is changing. Often the training is fine. The food is not. Our coach holds a master's degree in exercise science, and the honest answer to a protein question is a range from the research, then a plan you will actually eat.
Where the number comes from
The International Society of Sports Nutrition's position stand on protein puts the daily intake for most people who exercise at 1.4 to 2.0 grams per kilogram of body weight. That is a range, not a single magic number, and it covers everyone from recreational lifters to athletes.
A large meta-analysis of resistance training studies, published in the British Journal of Sports Medicine in 2018, narrowed the useful part of that range. Gains in lean mass from adding protein stopped improving at around 1.6 grams per kilogram per day. Above that, the extra protein did not buy extra muscle in the studies they pooled.
So 1.6 is a sensible target, and anywhere from 1.4 to 2.0 is a reasonable place to live. You do not need to chase three grams a day.
Turning the range into meals
A gram per kilogram is not a useful thing to think about at dinner, so do the conversion once. Take your body weight in pounds, divide by 2.2 to get kilograms, and multiply by 1.6.
A 180 pound lifter is about 82 kilograms. At 1.6 grams per kilogram, that is roughly 130 grams of protein a day. Split over four meals, it comes to about 33 grams each, which lands right inside the 20 to 40 grams per meal the ISSN position stand recommends.
Thirty-odd grams is a real portion but not an enormous one. It is a chicken breast, a can of tuna and a slice of cheese, a cup of Greek yogurt with a scoop of protein powder, or four eggs plus a glass of milk. Build each meal around one of those and the daily number takes care of itself.
Does timing matter?
Less than the total, but it is not nothing. Spreading protein through the day across three to five meals works better than eating most of it at dinner, and a protein-containing meal within a few hours either side of training is easy to arrange.
What timing will not do is rescue a low daily total. If you are hitting 70 grams a day, a perfectly timed shake after training is still 70 grams a day. Fix the total first.
When the number changes
If you are cutting body fat while trying to hold onto muscle, the target moves up. The same ISSN position stand notes that intakes of 2.3 to 3.1 grams per kilogram may be needed to keep the most lean mass in resistance-trained people eating in a calorie deficit. That is where higher intakes earn their place.
If you are older, starting out after a long layoff, or not sure whether a higher protein intake suits you because of a medical condition, check with your doctor before changing your diet. We coach training and help clients build eating habits that support it. We do not write medical diets.
The part protein cannot do
Protein supplies the building material. The signal to build is the training. A program that adds load or reps over time, in a way you can recover from, is what gives that protein somewhere to go, and we wrote about how we apply it in progressive overload, and how to actually apply it.
That is the work we do with clients in private sessions out of Brick Township: the program, the progression, and a protein target turned into meals that fit a real week. If you want a coach and a plan rather than a membership, book a session.
Common questions
- How much protein do I need per day to build muscle?
- About 1.6 grams per kilogram of body weight per day for most people who lift, or roughly 0.7 grams per pound. The ISSN puts the general range for people who exercise at 1.4 to 2.0 grams per kilogram, and a 2018 meta-analysis found gains in lean mass stopped improving around 1.6.
- How much protein should be in each meal?
- Around 20 to 40 grams, or about 0.25 grams per kilogram of body weight, spread over three to five meals. For a 180 pound lifter aiming for 130 grams a day, four meals of about 33 grams each fits.
- Do I need more protein when losing fat?
- Often, yes. When you are in a calorie deficit and want to keep muscle, the ISSN position stand notes intakes of 2.3 to 3.1 grams per kilogram may be needed for resistance-trained people. If you have a medical condition, check with your doctor before raising your protein intake.
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