How Much Protein Do You Need to Lose Weight? (Calculator Table)

Protein advice online ranges from “you’re eating too much already” to “one gram per pound, minimum.” Both can’t be right. This guide walks through what the research actually supports for weight loss, gives you a simple calculator table by body weight, shows how to split protein across your day and explains who should be careful with high intakes.

How much protein do you need per day to lose weight?

The best-supported range for weight loss is 1.2 to 1.6 g of protein per kilogram of body weight per day. That figure comes from a review in the American Journal of Clinical Nutrition by Leidy and colleagues (2015), which concluded that higher-protein diets in this range, potentially with at least 25 to 30 g of protein per meal, can improve appetite, body weight management and cardiometabolic risk factors.

For comparison, the Recommended Dietary Allowance (RDA) is 0.8 g per kilogram. The Harvard T.H. Chan School of Public Health describes this as a minimum, about 7 grams for every 20 pounds of body weight, and notes that the National Academy of Medicine sets a wide acceptable range of 10% to 35% of calories from protein. So eating 1.2 to 1.6 g/kg while dieting is higher than the minimum but still well inside accepted ranges for healthy adults.

Why the bump while dieting? When you eat less than you burn, your body loses some lean tissue along with fat. A meta-analysis of 24 trials found that, compared with standard-protein diets at the same calories, higher-protein diets led to a bit more weight and fat loss and helped limit the loss of fat-free mass. The average differences were modest (under 1 kg over about 12 weeks), so protein is a helpful tool, not a shortcut.

Protein calculator: how much protein for your body weight?

Find your weight in the left column. The middle columns show the minimum (RDA) and the weight-loss range; the last column shows what that means per meal if you eat three meals a day.

Daily protein targets by body weight

Body weight	In kilograms	Minimum (RDA, 0.8 g/kg)	Weight loss target (1.2–1.6 g/kg)	Per meal, if eaten over 3 meals
120 lb	54 kg	44 g	65–87 g	22–29 g
140 lb	64 kg	51 g	76–102 g	25–34 g
160 lb	73 kg	58 g	87–116 g	29–39 g
180 lb	82 kg	65 g	98–131 g	33–44 g
200 lb	91 kg	73 g	109–145 g	36–48 g
220 lb	100 kg	80 g	120–160 g	40–53 g
240 lb	109 kg	87 g	131–174 g	44–58 g
260 lb	118 kg	94 g	142–189 g	47–63 g
280 lb	127 kg	102 g	152–203 g	51–68 g
300 lb	136 kg	109 g	163–218 g	54–73 g

If you snack, you can move 15 to 20 grams from meals to a high-protein snack, such as Greek yogurt or cottage cheese, without changing the daily total.

How do I calculate my own protein target?

1. Convert pounds to kilograms: divide your weight in pounds by 2.2.
2. Multiply by 1.2 for the low end and 1.6 for the high end.
3. Pick a number in the range that you can actually eat most days. Start near the low end if you currently eat little protein.
4. Divide by your meals. Aim for at least 25 to 30 g at each main meal.

Example: Sarah weighs 165 lb. 165 ÷ 2.2 = 75 kg. 75 × 1.2 = 90 g and 75 × 1.6 = 120 g, so her target is about 90 to 120 g a day. She chooses 110 g: 30 g at breakfast, 35 g at lunch, 30 g at dinner and a 15 g snack.

To find your calorie target as well, use our guide to calculating your calorie deficit. Protein provides 4 calories per gram, so 110 g of protein is 440 calories, a little over a quarter of a 1,600-calorie day.

Should I use my current weight or my goal weight?

If you have a lot of weight to lose, calculating from your current weight can give a number that is hard to eat and more than you need, because body fat doesn’t need protein the way muscle does. A common practical approach used by dietitians and coaches is to calculate from your goal weight, or from a weight somewhere between your current and goal weight, when your BMI is in the obese range. Research on the best reference weight is limited, so treat this as a sensible starting point rather than a rule.

For example, a 260 lb person aiming for 190 lb would use 190 lb (86 kg) and land at about 104 to 138 g a day, instead of 142 to 189 g based on current weight.

Do you need more protein if you work out?

A bit more, sometimes. The International Society of Sports Nutrition position stand says 1.4 to 2.0 g/kg per day is sufficient for most exercising people to build and maintain muscle, and that resistance-trained people in a calorie deficit may benefit from higher intakes of 2.3 to 3.1 g/kg. That upper range is aimed at lean, trained athletes, not most people starting a weight loss plan.

A large meta-analysis in the British Journal of Sports Medicine of 49 studies found that protein supplementation during resistance training increased gains in muscle mass and strength, but there was no further benefit for muscle gain beyond about 1.6 g/kg per day of total protein. For most people who lift two or three times a week and want to lose fat, 1.6 g/kg is a sensible ceiling.

Strength training is what tells your body to keep muscle while you lose fat. If you train at home, start with our simple bodyweight workout plan for beginners or these no-equipment HIIT workouts, and read our guide on losing fat and gaining muscle at the same time.

How much protein should I eat per meal?

About 25 to 30 grams per main meal is a good working target, based on the Leidy review. Many people eat a small breakfast with 10 grams of protein and a big dinner with 50, which makes the daily total harder to reach and does little for morning hunger. Spreading protein more evenly is easier.

What 25–30 g of protein looks like (USDA FoodData Central values)

Food	Amount	Calories	Protein (g)
Chicken breast, roasted	3.5 oz (100 g) cooked	165	31
Plain nonfat Greek yogurt	1 1/4 cups (285 g)	170	29
Liquid egg whites + 1 whole egg	1 cup + 1 egg	200	33
Light tuna, canned in water	1 can (115 g drained)	99	22
Shrimp, cooked	4 oz (113 g)	112	27
2% cottage cheese	1 cup (226 g)	183	24
Extra-firm tofu	10 oz (285 g)	235	28
Lentils, cooked	1 1/2 cups (300 g)	350	27

Need ideas for the hardest meal? Try our high-protein breakfast ideas or overnight oats with Greek yogurt, which hit 23 g or more without protein powder.

Why does protein help with weight loss?

• Fullness: Mayo Clinic notes that high-protein diets help with short-term weight loss mainly by making you feel fuller. The Leidy review found a modest satiety effect, with greater fullness after higher-protein meals.
• Lean mass: in the Wycherley meta-analysis, higher-protein diets reduced the loss of fat-free mass during dieting.
• Resting energy expenditure: the same meta-analysis found higher-protein diets limited the drop in resting energy expenditure that happens during weight loss.

What protein doesn’t do is cancel out a calorie surplus. The Leidy review also noted that long-term results depend heavily on sticking with the diet. Pick protein foods you enjoy and can afford, because consistency is what makes the difference.

What does a high-protein day look like?

Here is one real day from our meal plan. It reaches about 129 g of protein for roughly 1,625 calories using ordinary grocery-store foods, with no protein powder at all. That fits the 1.2 to 1.6 g/kg range for someone weighing roughly 80 to 107 kg (175 to 235 lb).

Sample day: about 1,625 calories and 129 g protein (Day 2 of our 7-day plan)

Meal	What to eat	Calories	Protein (g)
Breakfast	Veggie egg scramble on toast	450	36
Lunch	Tuna salad wrap + apple	445	33
Dinner	Turkey and black bean chili	540	42
Snack	Edamame with sea salt	190	18

Notice the pattern: every meal has an obvious protein anchor (eggs and egg whites, tuna, turkey), and the snack is a protein food too, not crackers or a granola bar. Repeat that pattern and the daily total mostly takes care of itself.

Does it matter if protein comes from plants or animals?

For hitting a number, both count. For long-term health, the source matters more than the exact amount, according to Harvard’s Nutrition Source: replacing red and processed meat with beans, nuts, fish or poultry is linked with lower risk of several diseases. Animal proteins tend to be more concentrated, so you need smaller portions to reach 25 to 30 g. Plant proteins bring fiber and usually fewer calories from saturated fat, but you often need larger servings or a combination, such as tofu with edamame or lentils with whole grains. A mix of both is the easiest way for most people to reach their target.

What are the best high-protein foods for weight loss?

The most useful foods give a lot of protein per calorie. Here is how common choices compare.

Protein per 100 calories (USDA FoodData Central values)

Food	Typical serving	Calories	Protein (g)	Protein per 100 cal (g)
Shrimp, cooked	4 oz (113 g)	112	27	24.2
Light tuna in water	1 can (115 g)	99	22	22.6
Cod, cooked	5 oz (140 g)	147	32	21.7
Liquid egg whites	1 cup (243 g)	126	26	21.0
Chicken breast, roasted	4 oz (113 g)	186	35	18.9
Plain nonfat Greek yogurt	1 cup (227 g)	134	23	17.2
2% cottage cheese	1 cup (226 g)	183	24	12.9
Extra-firm tofu	5.3 oz (150 g)	124	15	12.1
Salmon, farmed, cooked	4 oz (113 g)	233	25	10.7
Edamame, shelled	1 cup (155 g)	188	19	9.8
Whole eggs	2 large	143	13	8.8
Lentils, cooked	1 cup (198 g)	230	18	7.8

Protein per calorie isn’t everything. Harvard’s Nutrition Source stresses the whole “protein package”: fish, poultry, beans, nuts and yogurt come with healthier fats and fiber, while processed meats bring a lot of sodium. Lentils and beans have less protein per calorie but add fiber. Salmon brings omega-3 fats. A mix is best. See our guides to the best lean meats for weight loss and best muscle-building foods, or read about sea bass nutrition if you like fish.

How can I hit my protein target without overthinking it?

• Build every meal around a protein. Decide on the protein first, then add vegetables and a starch.
• Upgrade your staples. Swap regular yogurt for Greek yogurt and add egg whites to scrambled eggs.
• Keep ready-to-eat protein on hand: canned tuna, hard-boiled eggs, cottage cheese, edamame and rotisserie chicken.
• Use protein powder only if it helps. It’s convenient, not required. Harvard notes powders aren’t FDA-regulated for safety, so read labels. If you need a gluten-free option, see our gluten-free protein powder guide.
• Prep ahead. Our high-protein meal prep guide shows how to cook a week of 25 to 40 g protein meals in about two hours.

If you’d rather not plan at all, our 7-day high-protein meal plan for weight loss provides about 120 to 140 g of protein a day at roughly 1,600 calories, with a 2,000-calorie version. Eating cheaply? Our budget high-protein meals rely on beans, eggs and canned fish.

Can you eat too much protein?

For healthy people, Mayo Clinic says high-protein diets aren’t known to cause medical problems. The concerns are mostly about what comes with the protein and about specific health conditions:

• Kidney disease: Mayo Clinic notes that a high-protein diet may worsen kidney function in people with kidney disease. If you have kidney disease, follow your doctor’s protein guidance.
• Food choices: diets heavy in red and processed meat can raise LDL cholesterol and heart disease risk. Very low-carb versions can lack fiber.
• Diminishing returns: beyond about 1.6 g/kg, the Morton meta-analysis found no extra muscle gain from resistance training, and the extra protein still counts toward your calories.

Vegetarians and vegans can reach the same targets by mixing beans, lentils, tofu, tempeh, edamame, seeds and whole grains through the day. Harvard notes that eating a variety of plant proteins supplies all the essential amino acids. Our guide to a vegan diet for muscle gain has more detail, and our overview of high-protein diets compares popular approaches.

Frequently asked questions

How many grams of protein should I eat a day to lose weight?

Most research on weight loss supports about 1.2 to 1.6 grams of protein per kilogram of body weight a day, or roughly 0.55 to 0.73 grams per pound. For a 180-pound person, that is about 98 to 131 grams a day.

Is 100 grams of protein a day enough to lose weight?

For many people, yes. 100 grams falls within 1.2 to 1.6 g/kg for anyone weighing roughly 63 to 83 kg (138 to 184 lb). Heavier people, or those who lift weights, may do better with more, while weight loss still depends on an overall calorie deficit.

Should I eat 1 gram of protein per pound to lose weight?

Most people don’t need that much. One gram per pound is about 2.2 g/kg, above the 1.2 to 1.6 g/kg range supported for weight loss. Higher intakes are mainly suggested for lean, resistance-trained athletes in a calorie deficit.

How much protein should I eat per meal for weight loss?

Aim for about 25 to 30 grams at each main meal. A review in the American Journal of Clinical Nutrition linked this per-meal amount, within a daily intake of 1.2 to 1.6 g/kg, to improvements in appetite and weight management.

Can eating more protein help me lose weight without exercise?

It can help by making a calorie deficit easier to stick to, mainly through fullness. But resistance training is what best helps preserve muscle while you lose fat, so combining both works better than protein alone.

Is a high-protein diet safe for my kidneys?

Mayo Clinic says high-protein diets aren’t known to cause problems in healthy people, but they may worsen kidney function in people who already have kidney disease. If you have kidney disease, diabetes or another chronic condition, talk with your doctor before raising your protein intake.

Key takeaways

• For weight loss, aim for about 1.2 to 1.6 g of protein per kilogram a day (0.55 to 0.73 g per pound).
• The RDA of 0.8 g/kg is a minimum, not an optimal target while dieting.
• Spread protein out: about 25 to 30 g per main meal.
• If you have a lot of weight to lose, calculating from goal weight is a practical starting point.
• Above about 1.6 g/kg, there is no further muscle-building benefit for most people; pair protein with strength training.
• People with kidney disease should follow their doctor’s advice on protein.

How we calculated nutrition: calories and protein are estimates computed from standard USDA FoodData Central values for each ingredient (SR Legacy entries), rounded to the nearest 5 calories and 1 gram. Whey protein uses a typical label value (about 120 calories and 24 g protein per 30 g scoop). Brands vary, so check your labels.

Not medical advice. This article is general information for healthy adults, written by our editorial team. Talk with your doctor or a registered dietitian before changing your diet, especially if you are pregnant or breastfeeding, have kidney disease, diabetes or another health condition, or take medication.