Written by Martin Ebner
Last updated Sept 2026
Protein advice tends to go wrong in two directions. Some people treat the minimum needed for general health as if it were ideal for every active person. Others behave as though doubling your protein will double your muscle growth. Neither is particularly useful.
Your target depends on what you’re asking your body to do. Somebody who doesn’t train needs less than somebody lifting four times a week, and somebody dieting while trying to keep their muscle may benefit from a little more. You need a sensible range, not a number carried to three decimal places.
THE SHORT ANSWER
These are practical daily starting points for healthy adults:
General health with little structured exercise: 0.8g to 1.0g per kilogram of bodyweight
Regular exercise and general fitness: 1.2g to 1.6g per kilogram
Building muscle: 1.6g to 2.2g per kilogram
Losing fat while strength training: 1.6g to 2.2g per kilogram
Adults over 65: usually at least 1.0g to 1.2g per kilogram, with more potentially useful when active
For an 80kg person, 1.6g per kilogram works out at 128g of protein a day. That total includes everything you eat and drink. It doesn’t mean 128g of chicken, and it certainly doesn’t mean 128g of protein powder.
If you carry a lot of body fat, multiplying your current weight can produce an unnecessarily high number. Using a realistic target bodyweight generally gives you a more useful place to begin.
These ranges aren’t medical prescriptions. Pregnancy, kidney disease, certain digestive conditions and other health issues need individual advice from an appropriately qualified professional.
WHY THERE ISN’T ONE PERFECT NUMBER
The European population reference intake is 0.83g per kilogram of bodyweight. That figure is designed to cover the needs of almost all healthy adults, not to maximise muscle growth, athletic recovery or fullness during a diet.
Training changes the job. Resistance exercise creates a reason to build and repair muscle, while endurance training increases the turnover of proteins involved in recovery and adaptation. Age matters as well because older muscle generally responds less strongly to a given serving of protein.
Your calorie intake also changes the calculation. When you’re eating enough to maintain or gain weight, your body has plenty of energy available. During a calorie deficit, protein becomes more important because you’re trying to lose fat without giving up the muscle you’ve built.
That’s why I’d rather give somebody a useful range and adjust it to their life than pretend there’s one perfect target for everybody.
HOW MUCH PROTEIN DO YOU NEED TO BUILD MUSCLE?
For most people who lift weights, 1.6g per kilogram per day is a very sensible target. A meta-analysis covering 49 studies found that extra protein beyond roughly that amount didn’t produce further gains in fat-free mass.
That doesn’t mean 1.61g is pointless or that everybody responds identically. The upper end of the estimated range reached roughly 2.2g per kilogram, so using 1.6g to 2.2g gives you room for differences in body size, training experience, appetite and the accuracy of your food tracking.
I’d usually begin nearer 1.6g than 2.2g. If you enjoy higher-protein meals and the extra food fits comfortably into your diet, going higher is fine. If forcing it leaves you too full to eat enough carbohydrate and fat, the target is getting in the way of the wider plan.
Protein doesn’t build muscle independently of training. You still need a decent muscle-building program, enough energy to support it and time for the work to add up.
HOW MUCH PROTEIN DO YOU NEED FOR FAT LOSS?
Protein is useful during fat loss for two main reasons. It can help you feel fuller, and it helps protect lean tissue while your calorie intake is lower. It doesn’t burn body fat on contact and it can’t rescue a diet that regularly exceeds your energy needs.
A review of higher-protein weight-loss diets found that intakes around 1.2g to 1.6g per kilogram could improve fullness and weight management. If you’re also strength training and preserving muscle is a priority, I’d generally work between 1.6g and 2.2g per kilogram.
The leaner you are and the more aggressively you diet, the more cautious I’d be about sitting at the bottom of the range. My first recommendation, however, wouldn’t be to keep raising protein while cutting food harder. It would be to use a calorie deficit you can actually sustain and continue lifting properly.
Protein still contains calories. Replacing part of your diet with leaner protein sources can be helpful, but adding three shakes to everything you already eat is just adding three shakes.
HOW MUCH PROTEIN DO YOU NEED FOR GENERAL FITNESS?
If you exercise regularly but aren’t deliberately trying to gain muscle or lose fat, 1.2g to 1.6g per kilogram is a useful range. It’s comfortably above the population minimum without turning protein into the central event of every meal.
Somebody doing two gym sessions and plenty of walking may be happy near the lower end. Somebody training harder across several days, combining lifting with running or recovering from a large weekly workload may prefer the upper end.
You don’t need to change the target every time your training week changes slightly. Pick a number you can reach with normal food, keep it reasonably consistent and pay attention to your recovery, appetite and performance.
PROTEIN AS YOU GET OLDER
Maintaining muscle becomes more important with age, and older adults may need a stronger protein stimulus to produce the same response. The PROT-AGE study group recommended at least 1.0g to 1.2g per kilogram per day for healthy adults over 65, with 1.2g or more for those who are active.
Strength training matters just as much as the protein. Eating more without giving the muscle a reason to stay isn’t the same strategy. A useful target spread across proper meals, combined with regular resistance exercise, is far more valuable than suddenly adding an enormous shake before bed.
Health conditions become more common with age, so this is one area where individual advice matters. The range is a starting point for a healthy person, not an instruction to ignore medical guidance.
HOW MUCH PROTEIN SHOULD YOU EAT AT EACH MEAL?
Your daily total matters most, but distribution can make that total easier to use and much easier to eat. Instead of having almost no protein at breakfast and trying to recover the entire target at dinner, aim for three or four useful servings across the day.
One evidence-based review suggested around 0.4g per kilogram per meal when the goal is to maximise muscle growth. For an 80kg person, that’s roughly 32g per meal. It’s a guide rather than a hard ceiling.
Your body doesn’t stop digesting protein after 30g. A larger serving isn’t wasted, and mixed meals take time to digest. The point of spreading your intake is to give yourself several useful opportunities to support muscle protein synthesis, not to panic because lunch contained 42g.
If you prefer three meals, make them more substantial. If four smaller meals suit your appetite and schedule, use four. Consistency beats arranging your life around a shaker every three hours.
ANIMAL AND PLANT PROTEIN BOTH COUNT
Meat, fish, eggs and dairy provide complete proteins with all nine essential amino acids. Soy is also complete, while many other plant foods are lower in one or more essential amino acids. That doesn’t mean plant protein is useless or that every meal needs a perfectly engineered combination.
Eat a varied diet and build your meals from different sources across the day. Tofu, tempeh, beans, lentils, peas, grains, nuts and seeds all contribute. If your diet is entirely plant based, a slightly higher total can provide some insurance against differences in digestibility and amino-acid content.
I’ve covered ten useful plant-based protein sources separately, without pretending broccoli is a practical substitute for a proper serving of protein.
HOW TO REACH YOUR TARGET WITHOUT OBSESSING
Start by giving each main meal an obvious protein source. Eggs or Greek yoghurt at breakfast, chicken, fish, tofu or pulses at lunch, then another useful serving at dinner will take most people a long way. The foods around them still matter, so keep the fruit, vegetables, carbohydrates and fats that make the meal complete.
Track your intake for a few normal days if you genuinely don’t know where you stand. You’re looking for the broad pattern, not trying to catch yourself out over the protein in half a slice of bread. Once you know what your usual breakfast, lunch and dinner provide, you shouldn’t need to calculate them forever.
If you keep falling short, make the easiest meal stronger. Add yoghurt to breakfast, increase the main protein at lunch or choose a higher-protein snack. Small changes repeated every day are far more useful than eating an emergency block of chicken at eleven o’clock at night.
WHEN PROTEIN POWDER HELPS
Protein powder is convenient, not compulsory. It can help when you’re short on time, don’t feel like eating after training, need a portable option or simply struggle to reach your target with food.
Use it to fill the gap that actually exists. If your target is 130g and your meals already provide 110g, one ordinary shake is enough. You don’t need three servings because the instructions on the tub would quite like you to buy another tub.
There are perfectly good dairy and plant options. My guide to the best protein powders for building muscle compares them and explains what to check before buying one.
THE BOTTOM LINE
If you don’t train much, roughly 0.8g to 1.0g per kilogram may cover what you need. For regular exercise, 1.2g to 1.6g is a useful target. For building muscle or protecting it during fat loss, start around 1.6g and move towards 2.2g only when there’s a reason.
Spread that total across three or four meals, use food first and add a supplement only when it makes the plan easier. The target should support your life and training, not become another full-time job.
For more sensible nutrition without the weekly reinvention of food, you can join Check It Oot. It’s one or two emails a month from me, and every one has to earn its place in your inbox.
