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Free calculator

Protein Calculator

Find a daily protein range that fits your body, your activity and your goal, and see how to spread it through the day.

  • Free
  • No sign-up
  • Stays on your device
  • Per-meal split
Units
Height (optional)
ft
in

Pick a normal week, not your best one. Between two? Choose the lower.

Private: your numbers stay on this device unless you choose to share them.

Your protein

Fill in your details and tap Calculate to see your daily range in grams.

Good to know: These are estimates for general wellness, not medical advice. They’re made for healthy adults: if you’re pregnant or breastfeeding, under 18, have a medical condition or follow a diet your doctor prescribed, talk to your doctor or a licensed dietitian first.

Learn

Protein, the muscle nutrient.

Why protein matters

Protein builds and repairs muscle, keeps your immune system working and helps you feel full. It matters even more as you get older, when the body becomes slower at building muscle, and when you’re losing weight, when you want to keep the muscle you have.

How much is enough?

WhoGrams per kg a day
Adults who aren’t very active0.8 – 1.0
Active adults1.2 – 1.6
Building muscle, strength or losing fat1.6 – 2.2
Adults 65 and overat least 1.0 – 1.2

One kilogram is 2.2 pounds, so 1.6 g per kg is about 0.73 g per pound. If you carry a lot of extra weight, we base your range on a healthier reference weight for your height.

Food first

Most people can reach their range with everyday foods: eggs, Greek yogurt, cottage cheese, fish, chicken, lean meats, tofu, tempeh, beans and lentils. A protein shake is handy when you’re busy, but it’s optional.

Is more always better?

Not really. Above about 2.2 g per kg, extra protein doesn’t build more muscle; it just adds calories. Healthy kidneys handle normal high-protein diets well, but if you have kidney disease, follow your doctor’s advice on protein.

How Josh uses numbers like these

Josh Nair coaching a live workout, smiling

Numbers help, but they’re only part of the story. Josh coaches mindset first (he says it’s about 60 percent of the work), then consistency, with lots of variety so training stays fun.

He lost 62 pounds himself in his early 50s, so he knows the hard part isn’t the math. It’s showing up on busy days and getting back on track after a slip. He pairs your protein target with strength training, because the two together are what build and protect muscle.

For a personal eating plan or a medical diet, Josh will point you to your doctor or a licensed dietitian.

Questions

Good questions, honest answers.

How much protein do I need a day?

The everyday minimum for adults is about 0.8 g per kilogram of body weight. Active adults usually do better with 1.2 to 1.6 g/kg, and 1.6 to 2.2 g/kg when building muscle or losing fat. Adults 65 and over need at least 1.0 to 1.2 g/kg.

Can you eat too much protein?

Most healthy adults do fine up to about 2 grams per kilogram. Beyond that it mostly adds calories. If you have kidney disease, follow your doctor’s advice.

Do I need protein shakes?

No. They’re a convenient option, but food works just as well. Eggs, yogurt, fish, chicken, beans, lentils and tofu are all great sources.

Can I get enough protein from plants?

Yes. Mix beans, lentils, tofu, tempeh, edamame, whole grains, nuts and seeds through the day. You may want to aim for the higher end of your range.

Is protein per pound or per kilogram?

Both work. Divide grams per kilogram by 2.2 to get grams per pound. For example, 1.6 g/kg is about 0.73 g/lb.

Can I use this if I’m pregnant, breastfeeding or under 18?

Please don’t rely on it. These estimates are for healthy adults. If you’re pregnant or breastfeeding, under 18, have a medical condition or follow a diet your doctor prescribed, talk to your doctor or a licensed dietitian first.