Free Protein Intake Calculator
Get a daily protein suggestion in grams, then see how to reach it with everyday foods. Our free protein intake calculator accounts for your body weight and goal, from maintaining weight to building muscle.
Enter your stats and activity, then choose your diet and goal. Look for the protein amount in your result; the Calorie and other macro targets help you fit it into a full day of meals.
What Your Protein Result Means
The “At least” protein amount is a suggested daily minimum for meal planning. It isn't an exact requirement or an upper limit. Your meals can provide more protein while fitting the rest of your nutrition targets.
Count grams of protein, not the weight of the food: a 100 g serving of chicken isn't 100 g of protein. Check the protein line on the nutrition label and the serving size you're actually eating.
Put Your Protein Target on the Menu
After reviewing your result, select Generate Meal Plan. Your targets carry over to the homepage planner. Choose how many meals you want, then use its generate button to create meals and recipes around your numbers.
You don't need an account to generate a plan. To enter a specific protein target yourself, such as one you've agreed on with a dietitian, create a free account to customize your macros.
How Much Protein Do You Need Per Day?
Protein supplies amino acids your body uses to build and repair tissues. The amount that's useful for you depends on your body size, training, and circumstances. These reference amounts help put a result in context; they aren't the calculator's formula.
A Reference for Healthy Adults
The adult Recommended Dietary Allowance (RDA) is 0.8 g/kg per day, or about 0.36 g/lb. At 70 kg (about 154 lb), that's 56 g daily. The RDA is designed to cover nearly all healthy adults' basic requirements; it doesn't describe a target for every training goal (AHRQ review of protein requirements).
Training and Muscle Gain
Sports-nutrition guidance summarized by the NIH Office of Dietary Supplements recommends 1.2–2.0 g/kg per day for athletes (about 0.54–0.91 g/lb). For a 70 kg person, that's 84–140 g. Training type and workload matter, so this range is context for active people, not a reason for everyone to aim at the top.
Protein During Weight Loss
Protein deserves attention when you're eating less, especially if you're also training. A trial in young men doing intensive exercise during a calorie deficit found better lean-mass outcomes with higher protein intake. That doesn't tell us one perfect amount for every person losing weight. Keep protein in the plan while choosing a calorie target you can sustain; our calorie deficit calculator explains that side of the decision.
How Eat This Much Sets Your Protein Suggestion
We use your weight, goal, and Low, Medium, or High body-fat choice to set a starting protein minimum. Activity also adjusts it for maintenance and fat loss. The body-fat options are rough categories, so you don't need a measured percentage or an accurate lean-mass number to use the tool.
For example, Build muscle with Medium body fat starts at 0.82 g/lb (about 1.8 g/kg), or roughly 126 g for someone weighing 70 kg. Diet presets and calorie limits can modify that amount before it appears in your results. The macro calculator explains the starting rules and adjustments for each goal.
Calories are calculated separately using the Mifflin-St Jeor equation, activity, and your selected goal and weekly weight-change rate. That's why we ask for age, height, and sex as well as weight. Mifflin-St Jeor estimates resting energy use; it isn't a protein-requirement formula. A calorie limit can affect the final macro ranges, but tracking weight changes alone won't tell you your exact protein needs.
Getting Your Protein From Everyday Foods
Start by including a protein source in meals you already like. You don't need a completely different menu:
- Breakfast: yogurt with oats, eggs on toast, or a tofu scramble.
- Lunch: a lentil bowl, a tuna sandwich, or leftover chicken.
- Dinner: fish, tempeh, tofu, or beans alongside vegetables and a grain.
If your chosen target is 120 g, one way to divide it is 30 g at breakfast, 35 g at lunch, 35 g at dinner, and a 20 g snack. Those are example meal targets; adjust the portions of your chosen foods to suit your day. Check labels and recipes for the amounts they actually provide.
Frequently Asked Questions
How do I use this protein intake calculator?
Enter your current information. Choose U.S. Standard or Metric units, select your sex, and enter your height, current weight, and age.
Choose body fat and activity. Select Low, Medium, or High body fat; if you're unsure, Medium is a starting point. Choose the activity description closest to your usual routine, including your workday and exercise.
Submit and set your goal. After submitting, select your preferred diet and Lose fat, Maintain weight, or Build muscle above the results. For weight change, choose a weekly rate too. Your calorie and macro targets update with these choices.
Review your protein amount and plan meals. Look for the daily protein amount in grams. Change Settings lets you edit your stats. Generate Meal Plan opens the homepage planner with your targets; use its generate button to create meals.
How accurate is the result, and when should I update it?
It’s a practical starting suggestion, not a test of your individual protein requirement. Check whether the meals and portions work for you, and revisit the inputs when your weight, training, or goal changes meaningfully. Small day-to-day weight fluctuations don’t call for a new calculation. If your activity choice is unclear, the TDEE calculator has a guide to the options.
Can I get enough protein on a vegan or vegetarian diet?
Yes. Beans, lentils, soy foods such as tofu and tempeh, nuts, and seeds can contribute protein; vegetarian diets can also include eggs and dairy. Include a variety of sources across the day. You don’t have to combine complementary plant proteins at every meal (MedlinePlus).
Select Vegan or Vegetarian after submitting to carry that preference into meal planning. These presets adjust the suggested minimum for planning purposes; they don’t mean your body needs less protein because you eat plants.
Do I need protein powder?
No. You can meet a protein target with food. Powder can be a convenient way to fill a gap, but it isn’t a required part of the plan. Check how much protein a serving actually contains and include it in your daily total. NIH guidance describes both foods and supplements as ways athletes can meet additional protein needs.
Does it matter when I eat my protein?
Including protein across your meals is a practical way to reach your daily amount without leaving most of it for dinner. A small study in eight adults found higher 24-hour muscle protein synthesis with a more even distribution. That short-term finding doesn’t prove one meal schedule produces more muscle over time. Start with a routine you can follow; you don’t need identical portions at every meal.
Can I eat too much protein?
You can eat more than you need, and this calculator doesn’t establish a personal safe upper limit. More grams aren’t automatically a better target. If you have kidney disease, get individual advice: protein recommendations depend on your condition and treatment, including whether you’re on dialysis (NIDDK guidance).
Does this calculator cover pregnancy, older age, or medical conditions?
It doesn’t have separate protein rules for pregnancy, breastfeeding, older age, or medical conditions. Age helps set the calorie estimate, which can affect the final macro limits, but that isn’t the same as assessing those protein needs. Use a healthcare professional or registered dietitian’s advice when you need a target for your circumstances.
Is protein more important than calories for weight loss?
They answer different questions. A calorie deficit sets the energy budget for weight loss; protein is part of how you use that budget. Reaching a protein target doesn’t guarantee weight loss, and reaching a calorie target doesn’t tell you whether you ate enough protein. Use the calorie calculator for more on the daily energy target, and keep both numbers in view when planning meals.
Health & Fitness Calculators
Looking at a different part of your plan? Choose the calculator that answers your next question.
- Calorie Calculator
- Choose a daily intake for your goal, check how it works for you, and turn it into meals.
- TDEE Calculator
- Estimate what you burn in a typical day and understand your maintenance Calories.
- BMR Calculator
- Estimate the energy your body uses at rest, before activity and a weight-change goal.
- Calorie Deficit Calculator
- See how your selected weight-loss pace changes your daily intake target.
- Macro Calculator
- Plan protein, carbs, and fat in grams with room for different food choices.