How much protein do you need per day? The Recommended Dietary Allowance (RDA) is 0.8 grams of protein per kilogram of body weight, or about 0.36 grams per pound. That number covers basic needs, and it works as a floor rather than a goal. The 2025–2030 Dietary Guidelines for Americans now suggest 1.2 to 1.6 grams per kilogram a day, with protein at every meal. For a 150-pound person, that is roughly 82 to 109 grams a day. Below, you will find a simple way to do the math, the foods that make it easy, and how the common protein powders compare.
Key takeaways
- The RDA of 0.8 grams per kilogram of body weight is a floor, not a daily goal.
- The 2025–2030 Dietary Guidelines for Americans suggest 1.2 to 1.6 grams of protein per kilogram of body weight a day.
- Aim for some protein at each meal rather than most of it at dinner.
- Collagen adds to your protein total, but it is not a complete protein on its own.
How much protein do you need per day?
There are two numbers worth knowing. The first is the RDA, set by the National Academies: 0.8 grams per kilogram of body weight. Harvard Health describes it as the minimum amount needed to meet basic nutritional requirements. The second is the newer federal guidance. The 2025–2030 Dietary Guidelines for Americans suggest 1.2 to 1.6 grams of protein per kilogram of body weight a day, and they ask you to include a protein food at every meal.
If you train hard, the range can go higher. The International Society of Sports Nutrition (ISSN) says 1.4 to 2.0 grams per kilogram a day is enough for most people who exercise.
How do you do the math?
Divide your weight in pounds by 2.2 to get kilograms. Then multiply by the range you want to use. Here are a few examples, rounded to the nearest gram:
| Body weight | RDA floor (0.8 grams per kg) | Dietary Guidelines range (1.2 to 1.6 grams per kg) |
|---|---|---|
| 130 pounds (59 kg) | About 47 grams | About 71 to 94 grams |
| 150 pounds (68 kg) | About 54 grams | About 82 to 109 grams |
| 180 pounds (82 kg) | About 65 grams | About 98 to 131 grams |
| 210 pounds (95 kg) | About 76 grams | About 114 to 152 grams |
Use these numbers as a starting point, not a prescription. If you have a medical condition, talk with your healthcare provider before you raise your protein intake. Harvard's Nutrition Source says that people with certain diseases, such as kidney or liver disease, should keep track of their protein intake and follow their doctor's guidance.
Why does protein matter every day?
Protein is made of amino acids, and your body uses them all day long. They build and repair muscle, skin, hair and other tissues, and they help make enzymes and hormones. Of the 20 amino acids your body uses, nine are called essential, because your body cannot make them. Those nine have to come from food.
Your body does not keep a large reserve of extra protein the way it stores energy as fat. That is one reason steady, everyday intake matters more than a big protein meal once in a while.
What are the best food sources of protein?
Most people can reach their range with ordinary food. The Dietary Guidelines encourage a mix of animal and plant sources. Here are common choices with approximate amounts from the USDA's FoodData Central:
| Food | Portion | Protein (approximate) |
|---|---|---|
| Chicken breast, cooked | 3 ounces | About 26 grams |
| Salmon, cooked | 3 ounces | About 22 grams |
| Plain Greek yogurt, nonfat | 7 ounces | About 20 grams |
| Cottage cheese | ½ cup | About 12 grams |
| Lentils, cooked | ½ cup | About 9 grams |
| Edamame, shelled | ½ cup | About 9 grams |
| Milk | 1 cup | About 8 grams |
| Egg | 1 large | About 6 grams |
| Almonds | 1 ounce | About 6 grams |
What is the difference between complete and incomplete protein?
A complete protein supplies all nine essential amino acids in useful amounts. Meat, fish, eggs, dairy and soy are complete. Many plant foods are low in one or more essential amino acids, so they are called incomplete. That is not a problem in practice: the Harvard T.H. Chan School of Public Health notes that eating a variety of plant proteins over the day gives your body what it needs.
How should you spread protein across the day?
Spreading protein across your meals is easier than trying to eat most of it at dinner. Many people eat a light, low-protein breakfast and a large dinner. The ISSN suggests about 20 to 40 grams of protein per meal, every three to four hours, for people who exercise. A day built that way might look like this:
- Breakfast: two eggs and a cup of Greek yogurt with fruit.
- Lunch: a salad with chicken or salmon, or a bowl of lentil soup with a side of cottage cheese.
- Snack: a glass of milk, a handful of almonds or a cup of edamame.
- Dinner: fish, poultry, lean meat, tofu or beans, with vegetables and a whole grain.
If a meal comes up short, a protein powder is a simple way to fill the gap.
What are the main types of protein powder?
Protein powders are concentrated protein from one main source. Each type has a different job:
- Whey: a fast-digesting, complete dairy protein. It is a common choice for shakes after training.
- Casein: the other main dairy protein. It digests more slowly.
- Soy: a complete plant protein for people who avoid dairy.
- Pea and plant blends: often mixed (pea with rice, for example) to round out the amino acids.
- Collagen peptides: protein from animal connective tissue, chosen mostly for skin and joint support. It mixes clear and unflavored into almost any drink.
Does collagen powder count toward your daily protein?
Yes. Collagen protein counts toward your daily total, but it is not a complete protein, so pair it with other protein foods. Collagen contains no tryptophan, one of the nine essential amino acids.
That does not make collagen a poor choice. It means collagen works best as one part of a varied day. A 2019 analysis in the journal Nutrients, based on the standard American diet, found that collagen peptides could supply up to 36% of daily protein while the diet still met essential amino acid needs. In plain terms: a scoop of collagen in your coffee and eggs at breakfast work well together.
Where Collagen Powder+ fits in a daily protein plan
Collagen Powder+ is unflavored bovine collagen from grass-fed, pasture-raised cattle. Each two-scoop serving of Collagen Powder+ (20 g) delivers 18 g of protein, with 30 mcg of biotin and 90 mg of hyaluronic acid. The directions are simple: take two scoops once a day with 8 ounces of water or your favorite hot or cold recipe. It stirs into coffee, tea or a smoothie without changing the taste.
The formula supports improved elasticity of skin and supports joint health and mobility.* The protein is a bonus that helps on days when breakfast is light. Collagen Powder+ is not vegan or vegetarian, because the collagen comes from cattle. Its label warning reads: "If you are pregnant, nursing, allergic, have a medical condition or taking any medications, consult a doctor before using this or any other dietary supplement. Do not use if product has been opened or tampered with in any way. Keep out of reach of children. Do not use if safety seal is damaged or missing. Store in a cool, dry place." Harvard's Nutrition Source adds that "individuals diagnosed with certain diseases (such as kidney and liver disease) need to monitor their protein intake according to their physician's guidelines."
Quality comes first. Every batch is third-party tested by an outside lab for purity and potency. Collagen Powder+ is manufactured in USA with globally sourced materials, in an NSF-certified, GMP-certified, FDA-registered U.S. facility. Every amount is printed on the label, and the only other ingredient is dicalcium phosphate. You can read how we test on our standards page.
Simple ways to reach your protein target
- Start with breakfast. Eggs, Greek yogurt or cottage cheese can put 20 grams or more on the table before noon.
- Build each meal around a protein food first, then add the vegetables and grains.
- Keep easy snacks nearby: milk, nuts, edamame or a cheese stick.
- Mix animal and plant sources over the week.
- Use a powder to fill gaps, not to replace meals.
- Pair protein with strength training. Our guide to maintaining muscle with protein, training and creatine covers the training side.
Frequently asked questions about daily protein
How much protein do I need per day?
The RDA is 0.8 grams per kilogram of body weight, which is a minimum. The 2025–2030 Dietary Guidelines for Americans suggest 1.2 to 1.6 grams per kilogram a day. For a 150-pound person, that is roughly 82 to 109 grams.
Is it better to eat protein at every meal?
Spreading protein across meals is a practical habit, makes a daily target easier to reach, and matches the Dietary Guidelines' advice to include protein at every meal. The ISSN suggests about 20 to 40 grams per meal for people who exercise.
Can I get enough protein without meat?
Yes. Eggs, dairy, soy, beans, lentils, nuts and seeds all supply protein. If you eat only plant foods, a variety across the day gives your body all nine essential amino acids.
Is collagen powder a complete protein?
No. Collagen contains no tryptophan, so it is not a complete protein. Its protein still counts toward your daily total, and it works well alongside complete protein foods such as eggs, dairy, fish or soy.
Can I eat too much protein?
For most healthy people, the ranges in this article are well studied. Harvard's Nutrition Source notes that "individuals diagnosed with certain diseases (such as kidney and liver disease) need to monitor their protein intake according to their physician's guidelines." If you have kidney disease, liver disease or another medical condition, ask your healthcare provider what range is right for you before you raise your intake.
Related reading from our Wellness Hub
- How to Maintain Muscle Mass: Protein, Strength Training and Creatine
- How to Take Collagen Powder: Mixing, Timing and a Daily Routine
- Collagen Powder vs Capsules: Which Fits Your Routine?
Sources
- U.S. Department of Agriculture and U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2025–2030. January 2026.
- Harvard Health Publishing. How much protein do you need every day?
- Harvard T.H. Chan School of Public Health, The Nutrition Source. Protein.
- Jäger R, et al. International Society of Sports Nutrition Position Stand: protein and exercise. J Int Soc Sports Nutr. 2017.
- Paul C, Leser S, Oesser S. Significant amounts of functional collagen peptides can be incorporated in the diet while maintaining indispensable amino acid balance. Nutrients. 2019.
- USDA Agricultural Research Service. FoodData Central, SR Legacy (April 2019).
Individual results vary.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
