How much protein do you need per day?

The short answer: the general guideline for adults is 0.8 grams of protein per kilogram of body weight per day. If you train seriously or want to build muscle mass, the target is higher: roughly 1.6 to 2.2 grams per kilogram. For someone weighing 75 kilos, that is the difference between around 60 grams and 120 to 165 grams of protein per day.

Which number is right for you depends on your goal: maintenance, muscle building, weight loss, or staying fit as you age. Below you will find a concrete target for each goal, a table to quickly find where you stand, and a practical daily distribution. No seventeen-step meal plan—just numbers you can actually use.

How many grams of protein per day is enough?

For those who exercise little, 0.8 grams of protein per kilogram of body weight per day is sufficient. If you exercise a few times a week, 1.2 to 1.6 grams per kilogram is a more appropriate target. For muscle building with strength training, the common range is 1.6 to 2.2 grams per kilogram.

Treat these numbers as guidelines, not rules. Whether you hit 118 or 132 grams on any given day makes no difference; what matters is staying in the right range week after week. Consistency wins hands down over precision here.

Notice that the ranges vary considerably? That is exactly why "how much protein do I need" has no single-number answer. An office worker who occasionally goes for a walk and a strength athlete of the same weight are nearly a factor of three apart. Choose your goal first, then your number.

Why do you calculate your protein needs per kilogram of body weight?

Because your protein needs scale with your body. Someone weighing 60 kilos simply needs less than someone weighing 95 kilos, so a fixed number for everyone ("just eat 100 grams") quickly misses the mark. Calculating per kilogram makes the advice personal without making it complicated.

The calculation takes seconds: body weight multiplied by the factor that matches your goal. If you weigh 68 kilos and are training for muscle growth, that is 68 times 1.6 to 2.2, or around 109 to 150 grams per day. Want to see this step by step, with examples per weight and goal? Check out calculating your protein needs per kg of body weight.

How much protein do you need for muscle building?

For muscle building, the common target is 1.6 to 2.2 grams of protein per kilogram of body weight per day, combined with strength training. Protein contributes to the growth of muscle mass, but training provides the stimulus; without exercise, extra protein does not build muscle.

Eating more than 2.2 grams per kilogram has no demonstrable added benefit for muscle building. The gains come not from stacking, but from consistency: staying close to your target every day, month after month. That sounds less exciting than a secret formula, and it is. But it works.

And the perfect time to take protein? It turns out to be surprisingly unimportant as long as your daily total is on track. For information on protein right after your workout, read protein after exercise.

How much protein do you need when losing weight?

When losing weight, you actually want to be at the top of the range: 1.8 to 2.2 grams per kilogram of body weight. You are eating fewer calories, and you want the loss to come from fat, not from muscle. Protein contributes to the maintenance of muscle mass, which is exactly what you want to protect in a calorie deficit.

Practically speaking, this means protein deserves more attention during weight loss, not less. Someone in a deficit who focuses only on calories while neglecting protein will lose muscle as well as fat, needlessly. Protein-rich staples such as quark, eggs, fish, and legumes are your go-to tools: lots of protein for relatively few calories.

Does your protein need change as you get older?

Yes, it tends to go up rather than down. For people aged 65 and over, 1.0 to 1.2 grams per kilogram of body weight is often recommended—more than the standard 0.8. Maintaining muscle mass becomes both more important and more difficult with age; protein contributes to the maintenance of muscle mass and to keeping bones healthy.

The combination makes all the difference: sufficient protein plus physical activity, ideally with some resistance. Walking is great, but muscles love a challenge. You do not need to break records in your seventies; climbing stairs, gardening, and a few bodyweight exercises count too. Do what you can stick to—that applies just as much here.

Is the protein need different for women?

No, the target per kilogram of body weight is the same for women as for men. A woman who trains with weights uses the same 1.6 to 2.2 grams per kilogram. Because women are on average lighter, the absolute number simply comes out lower.

A woman weighing 62 kilos who does strength training ends up with approximately 99 to 136 grams of protein per day. That is less than the 150 grams found in many online training programmes, and rightly so: those programmes are often written for someone weighing 90 kilos. Calculate for yourself, not for the average programme writer, and your target becomes much more achievable.

How do you spread protein throughout the day?

Divide your daily total across three to five meals with around 20 to 40 grams of protein each time. That is easier to maintain than cramming everything into a single evening meal, and you do not need to set an alarm. Simply: a solid portion of protein at every meal.

Here is what that could look like for someone aiming for around 130 grams per day:

For most people, breakfast is the weakest link: two crackers with jam and done. That is exactly where the easiest gains are to be made. For ideas that go beyond "just eat an egg", check out high-protein breakfast.

Where do you get your protein from?

From regular food, first and foremost. Dairy, eggs, meat, fish, legumes, tofu, and nuts can take you a long way and provide everything a shake does not, alongside the protein. Someone who eats a varied diet without aiming extremely high often hits their target without a single scoop of powder.

To give you an idea of what everyday foods provide, in approximate figures per serving:

A protein shake is therefore a tool for filling gaps: the rushed breakfast, the day with a double training session, the moment you simply cannot face another serving of quark. As a supplement to a healthy, varied diet it is perfectly fine; as a foundation, it is not. For information on when to take a shake, read protein shake before or after exercise.

Frequently asked questions about protein per day

Can you consume too much protein?

Above 2.2 grams per kilogram of body weight, extra protein has no demonstrable added benefit for muscle building. The surplus is used by your body as ordinary calories. That is rarely a disaster, but it is also pointless: you are eating protein that simply ends up as fuel.

Do plant-based proteins count equally?

Yes, they count fully towards your daily total. Plant-based sources such as legumes, tofu, and grains vary slightly in composition by type, so variety is marginally more important on a plant-based diet. Anyone eating fully plant-based would do well to aim for the top of their range and combine different sources throughout the day.

Should you eat less protein on rest days?

No. It is precisely on the days when you do not train that your body is recovering and rebuilding, so your needs remain the same. Sticking to the same target every day is also simpler to maintain than adjusting daily, and consistency is the entire game here.

What happens if you consistently eat too little protein?

You make things unnecessarily hard for yourself, especially if you train, are in a calorie deficit, or are getting older. Protein contributes to the maintenance of muscle mass; if you are systematically well below target, you are working against your own goal. The solution is usually not a supplement, but simply a solid protein source at every meal.

How much protein can your body absorb per meal?

There is no hard ceiling above which protein is lost; a large portion is simply digested more slowly. The distribution of 20 to 40 grams per meal is primarily practical: it keeps your daily total achievable without a single meal having to do all the work.

That is all there is to it: choose the target that suits your goal, spread it across your day, and stay consistent. Healthier living made simple. Now go do it.