Daily Protein Needs Calculator
Use your body weight, activity level, and goal to estimate a practical daily protein target.
Note: This tool provides estimates for healthy adults. If you have kidney disease, liver disease, are pregnant, or have a medical condition, talk with a clinician or registered dietitian first.
How much protein do you need per day?
Protein needs are not one-size-fits-all. The right amount depends on your body size, training volume, age, and goals. A sedentary person may do well around the classic baseline of 0.8 g/kg, while active people, lifters, and athletes usually benefit from higher intakes.
This per day protein calculator gives you a practical range in grams per day, then helps you split that total across meals so your intake is easier to follow in real life.
Why protein matters
1) Muscle repair and growth
Protein provides amino acids, the building blocks your body uses to repair and build tissue. If you resistance train, protein supports recovery and can improve adaptation over time.
2) Satiety and appetite control
Higher-protein meals often increase fullness compared with low-protein meals. During fat loss, this can make dieting easier and help preserve lean mass.
3) Healthy aging support
Older adults often need slightly more protein per kilogram than younger adults to support muscle retention, strength, and function.
How this calculator estimates your protein target
The tool converts your weight to kilograms and applies a protein-per-kilogram range based on your selected goal and activity level. It then provides:
- Minimum target (lower bound of your range)
- Maximum target (upper bound of your range)
- Practical midpoint (a simple daily target to start with)
- Per-meal protein based on how many meals you eat
As a rule of thumb, consistency matters more than perfection. Hitting your range most days is usually better than over-optimizing tiny details.
Protein recommendations by goal
General health / maintenance
Most people do well around 1.0–1.6 g/kg depending on activity. This supports normal health and recovery.
Muscle gain
A common evidence-based range is around 1.6–2.2 g/kg (sometimes a little higher in very high training loads). This is typically enough for most lifters to maximize gains.
Fat loss
When calories are lower, protein needs can increase to help preserve lean mass. Many people benefit from roughly 1.6–2.4 g/kg, especially when lean and training hard.
Endurance training
Distance running, cycling, and similar sports increase recovery demands. A practical range is often 1.2–2.0 g/kg depending on training volume and intensity.
High-protein food ideas
You can hit your protein target with many dietary styles. Choose mostly whole-food sources and fill gaps with convenient options when needed.
- Chicken breast, turkey, lean beef, pork loin
- Fish and seafood (salmon, tuna, shrimp, cod)
- Eggs and egg whites
- Greek yogurt, cottage cheese, milk, skyr
- Tofu, tempeh, edamame, lentils, beans
- Protein powders (whey, casein, soy, pea blends)
Simple strategy: distribute protein across meals
Rather than eating most protein at dinner, spread it over your day. For many adults, aiming for roughly 25–45 g protein per meal can be a strong starting point, depending on total body size and goals.
Example daily split
- Breakfast: 30 g
- Lunch: 35 g
- Dinner: 40 g
- Snack/shake: 20 g
Common mistakes to avoid
- Ignoring total calories: Protein helps, but calories still matter for fat loss or gain.
- Relying only on supplements: Powders are useful, but whole foods provide additional nutrients.
- Underestimating intake: Measure portions for a week if progress stalls.
- Large weekend swings: Weekly consistency beats perfect weekdays.
Frequently asked questions
Is 0.8 g/kg enough?
It is generally considered a minimum baseline for many adults, not necessarily optimal for active people or those with body composition goals.
Can I eat too much protein?
Healthy individuals usually tolerate high-protein diets well, but very high intakes are unnecessary for most people. If you have a medical condition, get personalized advice.
Do I need protein right after workouts?
Total daily intake is the top priority. Post-workout protein can still be helpful, especially if your previous meal was several hours earlier.
Bottom line
Your best protein target is the one that matches your body, goals, and routine—and that you can sustain consistently. Use the calculator above, start with the midpoint recommendation, track your progress for 2–4 weeks, and adjust as needed.