A 175-pound man needs between 63 and 160 grams of protein per day, depending on activity level and goals. That range is wide because a sedentary office worker and someone lifting weights four days a week have genuinely different needs. Here’s how to find your number.
The Baseline: Minimum Protein Needs
The official Recommended Dietary Allowance for protein is 0.8 grams per kilogram of body weight, which works out to about 0.36 grams per pound. For a 175-pound man, that’s roughly 63 grams per day. This is the minimum amount needed to prevent deficiency in a sedentary adult, not the amount that’s optimal for health, body composition, or performance. Most men who are even moderately active will benefit from eating well above this floor.
Protein Targets by Goal
General Fitness and Moderate Exercise
If you lift weights regularly, run, cycle, or do any structured exercise a few times per week, your needs jump to 1.2 to 1.7 grams per kilogram. For a 175-pound man (about 79.5 kg), that translates to roughly 95 to 135 grams of protein daily. This range supports recovery from training and helps maintain the muscle you already have.
Building Muscle
For men focused on gaining muscle through resistance training, the International Society of Sports Nutrition recommends 1.4 to 2.0 grams per kilogram per day. At 175 pounds, that puts you in the range of 111 to 159 grams daily. Most people doing serious strength training will land somewhere around 130 to 150 grams as a practical sweet spot. Going above 2.0 g/kg is unlikely to build more muscle, though some evidence suggests intakes above 3.0 g/kg may help with fat loss in experienced lifters.
Losing Fat While Keeping Muscle
When you’re eating fewer calories than you burn, your body is more likely to break down muscle for energy. Higher protein intake counteracts this. Research on athletes cutting weight recommends 1.6 to 2.4 grams per kilogram during a caloric deficit, which works out to 127 to 191 grams for a 175-pound man. Above about 2.4 g/kg, there’s no meaningful additional muscle-sparing benefit. If you’re dieting to lose body fat, protein is the one macronutrient worth keeping high.
How Age Changes the Equation
Men over 65 need more protein than younger adults to maintain the same amount of muscle. The body becomes less efficient at using dietary protein as it ages, a shift that contributes to gradual muscle loss (sarcopenia). Researchers recommend older adults consume 1.0 to 1.2 grams per kilogram, which is 80 to 95 grams daily for a 175-pound man. That’s notably higher than the standard RDA of 0.8 g/kg, and it applies even without regular exercise.
How to Spread Protein Across the Day
Your body can only use so much protein at once for muscle repair. A practical target is about 0.25 grams of high-quality protein per kilogram of body weight per meal, which comes to roughly 20 to 40 grams per serving. For a 175-pound man aiming for 130 grams a day, that’s about 30 to 35 grams spread across four meals.
Spacing protein intake every three to four hours appears to keep muscle-building signals elevated throughout the day. Each meal should contain enough of the amino acid leucine (found in meat, eggs, dairy, and soy) to cross the threshold that triggers muscle repair, roughly 2.5 to 3 grams per sitting. A palm-sized portion of chicken, fish, or beef easily clears that mark. Two eggs alone provide about 12.5 grams of protein but fall short on leucine, so pairing them with yogurt or another protein source makes the meal more effective.
A protein-rich snack before bed (30 to 40 grams, ideally from a slow-digesting source like cottage cheese or casein) can boost overnight muscle repair and slightly increase your resting metabolic rate while you sleep.
What 130 Grams of Protein Looks Like
Hitting a daily target of 130 grams sounds like a lot until you map it onto real food. A single large egg contains about 6 grams of protein. A cooked chicken breast (about 6 ounces) delivers roughly 40 to 45 grams. A cup of Greek yogurt adds around 15 to 20 grams. A cup of cooked lentils provides about 18 grams.
A realistic day might look like this: three eggs at breakfast (19 g), a chicken breast at lunch (42 g), Greek yogurt as a snack (17 g), and a serving of salmon with lentils at dinner (about 55 g). That puts you at roughly 133 grams without any supplements. Protein powder can fill gaps on busy days, but whole foods provide a broader range of nutrients and keep you fuller longer.
Why Protein Burns More Calories Than Other Foods
Protein has a higher thermic effect than carbohydrates or fat, meaning your body burns more energy just digesting it. About 15 to 30% of the calories in protein are used during digestion, compared to 5 to 10% for carbohydrates and 0 to 3% for fat. For a 175-pound man eating 130 grams of protein (520 calories from protein), that’s an extra 78 to 156 calories burned per day from digestion alone. It’s not a dramatic number, but over weeks and months it contributes meaningfully, especially during fat loss.
Upper Limits and Safety
For healthy adults without kidney disease, protein intakes up to about 2.0 grams per kilogram of ideal body weight are generally considered safe. For a 175-pound man, that ceiling is roughly 159 grams per day. Going higher isn’t dangerous for most people, but there’s limited evidence it provides extra benefit outside of elite athletic contexts. Men with existing kidney problems should work with their doctor on protein targets, since the kidneys handle the byproducts of protein metabolism and can be stressed by very high intakes.
Staying well hydrated matters more as protein intake climbs. Protein metabolism produces urea, which the kidneys filter out through urine. Drinking enough water supports this process and helps you avoid the dehydrated feeling that sometimes comes with higher-protein diets.