Most healthy adults do well with roughly 0.8–1.6 grams of protein per kilogram of body weight per day, depending mainly on activity level and goals.

Quick Scoop: How Much Protein Should You Eat?

Think of protein as your body’s daily “repair and rebuild” budget — how big that budget should be depends on your size, age, and how hard you push your body.

1. Core daily targets (simple ranges)

For most adults:

  • General, healthy, not very active : about 0.8 g/kg body weight per day (this is the classic RDA to prevent deficiency).
  • Active / exercise a few times a week : roughly 1.0–1.2 g/kg.
  • Strength training / intense exercise : about 1.3–1.6 g/kg , sometimes a bit higher under coaching (often up to around 2.0 g/kg is considered safe in healthy adults).
  • Older adults (≈65+) : often benefit from the higher end, ~1.2–1.6 g/kg , to help protect muscle and strength.

In calorie terms, that usually works out to about 10–35% of your daily calories from protein.

2. What that looks like in real food

To see whether you’re in the right ballpark, here are rough protein amounts in common foods.

  • 3 oz (about a deck of cards) lean meat or poultry: ~20–25 g protein.
  • 1 cup cooked beans or lentils: ~15–18 g.
  • 1 cup yogurt: ~10–15 g (higher for Greek yogurt).
  • 1 large egg: ~6–7 g.
  • 1 cup milk: ~8 g.

A 70 kg person hitting the basic 0.8 g/kg RDA (≈56 g/day) could reach it with, for example, a glass of milk, a cup of yogurt, a small portion of lean meat, and a cup of beans in a day.

3. Different goals, slightly different needs

How much protein you should eat also depends on what you care about right now.

  • Just staying healthy, not training hard
    • Aim near 0.8–1.0 g/kg.
    • Focus on steady intake over the day (not all at one meal).
  • Building or maintaining muscle
    • Many sports-nutrition guidelines land around 1.2–1.6 g/kg , sometimes higher for serious lifters or during fat-loss phases.
* Spreading protein across 2–4 meals helps support muscle protein synthesis.
  • Weight loss and staying full
    • Slightly higher protein (often 1.2–1.6 g/kg) can help preserve muscle and keep you fuller on fewer calories.
  • Older adults
    • Muscle loss (sarcopenia) becomes a real concern with age.
* Many experts now encourage **1.2–1.6 g/kg** to help maintain strength and mobility, plus some resistance training if possible.

4. Can you eat too much protein?

For healthy people with normal kidneys, intakes up to about 2 g/kg/day are often described as safe, and some research supports upper limits around 3.5 g/kg in well-adapted individuals. But “more is better” has limits.

Potential issues when you habitually go very high for no good reason include:

  • Digestive discomfort (bloating, constipation if your diet is low in fiber).
  • Crowding out other nutrients (not enough fruits, vegetables, and whole grains).
  • Possible impacts on cholesterol and cardiovascular risk if most protein is from processed, fatty meats.

Most people in places like the U.S. already exceed their basic protein needs without trying, so the bigger problem is often overall diet quality, not protein shortage.

5. Quick way to estimate your own number

You can get a rough personal target in two steps.

  1. Convert your weight to kilograms
    • Weight in pounds ÷ 2.2 = weight in kg.
  2. Multiply by a factor that matches your life
    • Sedentary / light activity: × 0.8–1.0
    • Regular exercise: × 1.0–1.2
    • Heavy lifting / intense training or cutting weight while preserving muscle: × 1.3–1.6

Example: 150 lb person

  • 150 ÷ 2.2 ≈ 68 kg
  • Moderately active (say ×1.2): 68 × 1.2 ≈ 82 g protein per day.

Online protein calculators from sports-nutrition or health sites use basically this logic, then tweak it by age and training status.

6. Why the “perfect” number is personal

There’s no single magic number because your situation matters.

Key things that change your ideal intake:

  • Age (older often need more per kg).
  • Activity and training style (endurance vs strength, frequency, and intensity).
  • Health conditions , especially kidney disease or certain metabolic issues (these can require lower, carefully supervised protein).
  • Total calories (very low-calorie diets often need relatively higher protein per kg to protect muscle).

Because of all this, dietitians generally recommend using ranges (like 0.8–1.6 g/kg) and adjusting based on how you feel, your performance, lab results, and medical advice.

7. Quick reality check for your plate

A simple way to sanity-check your day without counting every gram:

  • Include a palm-sized portion of protein (or equivalent plant protein) at most meals.
  • Aim for 2–4 decent protein servings per day , depending on your size and goals.
  • Keep plenty of vegetables, fruits, and whole grains in the mix so protein isn’t displacing other essentials.

If your meals regularly include lean meats or fish, dairy or soy, legumes, and nuts or seeds, you’re likely close to your needs unless you’re in a specialized scenario (serious athlete, very low-calorie diet, or chronic illness).

8. When to get personalized guidance

You should get individual advice from a doctor or registered dietitian if:

  • You have kidney disease, diabetes, liver disease, or other chronic conditions.
  • You’re pregnant, breastfeeding, or recovering from major illness or surgery.
  • You’re an older adult losing strength or weight fast.
  • You’re an athlete with very specific performance or body-composition targets.

They can look at your full health picture and help you dial in an exact, safe range — not just a generic chart value.

Bottom line: most people do well somewhere between 0.8 and 1.6 g of protein per kilogram of body weight per day , with the lower end for sedentary adults and the higher end for active, older, or muscle-focused folks.

Information gathered from public forums or data available on the internet and portrayed here.