How much protein do I need a day? Your perfect ‘how much protein do I need a day’ number won’t be the same as your buddy’s. You’ll need to consider things like your body weight, age, training volume, your overall health and what you want to use the protein for.

For a healthy person on a normal diet, the government’s reference nutrient intake (RNI) is 0.75g of protein per kilogram of bodyweight per day. But if you train frequently or want your training to have a positive effect on muscle, you may need more. Too much is never recommended, but you don’t need a math degree to work out a daily number for yourself. Once you have your body weight and goal down, you can work towards a doable amount for each day.

How Much Protein Should I Eat a Day?

As a general rule of thumb, the UK dietary reference values recommend (under population-based values) 0.75g of protein per kg of body weight for a majority of healthy adults. 75g/0.75kg in this population, as you will not hit exactly this intake. For example:

This is a starting point, not a recommendation for someone working out regularly and intensely. The BDA states that athletes and individuals who undertake regular strength and/or endurance training might need around 1.4 – 2.0g/kg/day, with around 1.6 – 1.7g/kg/day talked about for muscle gain, in addition to resistance training, and plenty of food energy to spare.

The easiest way to work out a protein requirement calculation Body weight in kg protein goal in g/kg = Protein target for the day For example, for an adult weighing 70kg: 70 0.75 = 52.5g/day For an adult exercising often and requiring 1.6g/kg: 70 1.6 = 112g/day That’s a big difference – which illustrates why the question: ‘How much protein do adults need?’ has such a simple, misleading answer.

What is your protein needs and why does it matter?

Protein is one of the body’s three macronutrients (carbohydrates and fat are the other two). It consists of amino acids that help us to build and repair tissues.

It contributes towards normal growth, tissue repair, and the maintenance of muscles and other body tissues. The NHS also suggests that meat, fish, eggs, dairy foods and beans, pulses and other protein foods are all important parts of a healthy and balanced diet.

This can include:

• Regular resistance training
• Endurance exercise
• Recovery from illness or injury
• Older age
• Periods of reduced food intake
• Weight-loss diets where preserving lean mass is important
• Building muscle through structured resistance training

But, more protein doesn’t necessarily mean better. After you meet your dietary needs, just consuming more and more protein doesn’t necessarily mean you’re going to get more muscle or get healthier. It is the overall diet quality that still counts.

Protein Needs by Goal

Explanation for protein needs by goal Protein needs are often more of a personal matter than a chasing a target number. For general health 0.75g/kg/day (about 0.3g/lb/day) is the UK reference value.

If you are a generally healthy adult undertaking only light training the UK reference value can be a useful goal. 70kg person: 0.75 x 70kg = 52.5gprotein/day. And generally eating normal food you will not need to bother with protein supplements.

For beginners If you are new to exercise you do not necessarily need to go straight to a high protein diet. An appropriate diet for a beginner: Define your approximate body weight; build your diet from your typical requirements; if you add regular resistance exercise, consider increasing protein over time; keep a sensible mix of carbs, fat, fruit, veg and fibre; and monitor your progress and see what response you are getting rather than assuming more protein means faster gains.

If you have a 70kg body weight they might begin by getting them into the habit of having at least 55g or more of protein daily, then aim for more if they are training hard. For building muscle As mentioned, muscle growth depends on many factors including progressive resistance training, enough energy, sleep and recovery.

The British Dietetic Association states around 1.6-1.7g/kg/day along with appropriate resistance training and enough energy for muscle gain.

And 70 1.6 = 112g/day and 70 1.7 = 119g/day that does not mean you have to hit exactly 112g a day or miss it by the same amount each time. Eating targets are better thought of as ranges than numbers to worry about. For regular training people who regularly do strength or endurance exercise have higher requirements than sedentary people.

The BDA suggest an approximate range of 1.4-2.0g/kg/day depending on the individual and their training programme. And 70 1.4 = 98g/day and 70 2.0 = 140g/day For healthy older adults protein requirements may become more relevant as their loss of muscle mass and function increases.

A 2024 American College of Sports Medicine (ACSM) educational presentation on evidence-based dietary recommendations lists about 1.0-1.2g/kg/day for healthy older people, and higher amounts in those with acute or chronic disease as appropriate. Consult your doctor if you are an older adult eating very high protein diets.

How Much Protein Should I Eat a Day for Weight Loss?

Protein gets a lot of attention when it comes to weight loss because it is filling and, when eaten in sufficient amounts, helps to preserve lean tissue on a calorie deficit. The key point here being: fat loss still ultimately hinges on energy balance over the long term.

Our advice: Rather than eating a single, higher-protein meal, it can work well to include some protein food at each of your three main meals.

The NHS advises including ‘foods high in protein’ (like beans and pulses, fish, eggs and lean meat) as part of meals.

For example:

• Breakfast: eggs with wholegrain toast
• Lunch: lentil and vegetable curry
• Snack: Greek-style yoghurt
• Dinner: fish, chicken, tofu or beans with vegetables and rice

This approach also provides nutrients that a protein-only strategy can miss.

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Protein Needs: A Simple Comparison

*These are general reference ranges, not personalised medical prescriptions. Exercise-related figures are based on guidance summarised by the BDA and ACSM.

The table illustrates an important point: protein needs vary according to context.

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How to Build a High-Protein Day

You do not have to eat huge portions of meat or drink several protein shakes to increase your protein intake.

A better strategy is to distribute protein-containing foods across the day.

A simple workflow

Step 1: Estimate your target

Multiply your weight in kilograms by an appropriate protein target.

Step 2: Divide the target across meals

If your target is 100g per day, you could aim roughly for:

• Breakfast: 25g
• Lunch: 30g
• Snack: 15g
• Dinner: 30g

This is simply an organisational strategy, not a strict physiological requirement.

Step 3: Choose foods you actually enjoy

Good protein sources include:

• Eggs
• Milk
• Yoghurt
• Cottage cheese
• Fish
• Chicken
• Lean meat
• Tofu
• Tempeh
• Lentils
• Chickpeas
• Beans
• Soya foods
• Nuts and seeds

The NHS Eatwell Guide recommends including beans, pulses, fish, eggs, meat and other protein foods, while dairy and alternatives such as soya products can also contribute protein.

Step 4: Check the rest of your diet

A high-protein diet should not automatically become a low-fibre or low-micronutrient diet.

Keep eating a variety of:

• Vegetables
• Fruit
• Wholegrains
• Pulses
• Healthy fats
• Dairy or suitable alternatives

Step 5: Adjust according to results

If your goal is muscle gain, monitor your training performance, body weight and measurements over time.

If your goal is weight loss, look at overall calorie intake and progress rather than protein alone.

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High-Protein Foods and Typical Portions

Protein content varies by brand, recipe and portion size, so food labels are the best source for exact amounts.

Some NHS dietetic resources provide useful examples, including approximately 30g protein in a 125g chicken breast fillet, around 7g in 200ml semi-skimmed milk, and around 9g in a small handful of peanuts.

These figures are illustrative rather than universal. Different products and preparation methods can change the nutritional value.

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Animal vs Plant Protein

You can obtain protein from both animal and plant foods.

Animal sources

Examples include:

• Eggs
• Milk
• Yoghurt
• Cheese
• Fish
• Chicken
• Beef
• Turkey

Animal foods can provide substantial amounts of protein in relatively small portions.

However, this does not mean that a diet must contain meat to provide sufficient protein.

Plant sources

Useful plant protein sources include:

• Lentils
• Chickpeas
• Beans
• Tofu
• Tempeh
• Soya
• Peas
• Nuts
• Seeds
• Quinoa

Plant foods can also provide fibre and other nutrients.

The NHS specifically identifies pulses such as beans, peas and lentils as useful protein foods and alternatives to meat.

For people eating predominantly plant-based diets, variety is useful. Rather than relying on a single protein food, include a mixture of pulses, soya foods, wholegrains, nuts and seeds.

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How Much Protein Should I Eat a Day: Tips That Make It Easier

A few simple habits can make meeting your protein target much easier.

1. Include protein at breakfast

Breakfast can be a difficult meal for protein if it consists only of toast or cereal.

Consider:

• Eggs
• Greek-style yoghurt
• Milk
• Cottage cheese
• Soya yoghurt
• Tofu scramble

2. Build meals around a protein source

Instead of treating protein as an afterthought, choose the main protein component first and build the rest of the meal around it.

3. Keep convenient options available

Boiled eggs, yoghurt, milk, tofu, cooked beans and nuts can make protein easier to add to meals and snacks.

4. Use supplements only when useful

Protein powders can be convenient, but they are not essential.

If you can comfortably reach your protein target through normal food, there is usually no nutritional requirement to add a supplement simply because it is marketed as “high protein”.

5. Spread intake throughout the day

Some NHS dietetic guidance recommends including protein foods across meals rather than concentrating all intake into one meal.

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Common Protein Mistakes

Understanding how much protein should I eat a day common mistakes can be just as useful as knowing the target itself.

Mistake 1: Assuming more is always better

More protein does not automatically mean more muscle.

Training stimulus, total calorie intake, carbohydrate availability, recovery and sleep all matter.

Mistake 2: Ignoring total calories

A food can be high in protein and still contribute significant calories.

Protein bars, shakes, nut butters and cheese can fit into a healthy diet, but portions still matter.

Mistake 3: Eating almost no protein during the day

Some people eat a very small amount of protein at breakfast and lunch, then attempt to compensate with a huge protein-heavy dinner.

A more consistent pattern is often easier to manage.

Mistake 4: Treating protein powder as a requirement

Protein supplements are a convenience product, not a prerequisite for building muscle or eating healthily.

Mistake 5: Forgetting fibre and micronutrients

A diet focused almost entirely on chicken, eggs and protein shakes may technically provide plenty of protein while still being poorly balanced.

Mistake 6: Using the wrong body weight for calculations

If you have significant excess body weight, multiplying your current weight by a high protein target can produce an unnecessarily large number.

This is one situation where an individual calculation from a registered dietitian can be more appropriate.

Mistake 7: Following social-media protein targets blindly

An influencer’s protein target may have been calculated for their body weight, training volume and goals.

It is not automatically appropriate for everyone.

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Protein and Protein Supplements: Do You Need Them?

For many people, food is enough.

NHS dietetic guidance lists a wide range of ordinary foods that can provide protein, including meat, fish, eggs, dairy, tofu, pulses, nuts and seeds.

A protein powder may be useful when:

• You have difficulty eating enough food
• You have a busy schedule
• You need a convenient post-training option
• Your appetite is low
• You struggle to reach a higher protein target through meals

But convenience is different from necessity.

A protein shake also does not replace the broader nutritional value of a varied meal.

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What to Expect When You Increase Protein

It is important to set realistic expectations.

Increasing protein from an inadequate intake to an appropriate intake can help you meet your nutritional needs. If you are resistance training, sufficient protein can also support the process of muscle adaptation.

But protein is not a shortcut.

You should not expect:

• Instant muscle growth
• Automatic fat loss
• Dramatic changes within days
• Better results simply because you consume more and more protein

Muscle gain generally requires consistent resistance training, adequate nutrition and recovery over time.

Likewise, weight loss depends on your overall energy intake and expenditure rather than protein intake alone.

The biggest practical benefit may simply be that you are meeting your body’s nutritional requirements more consistently.

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Is a Very High-Protein Diet Safe?

For healthy adults, higher-protein diets can be appropriate in some circumstances. However, “high protein” is not automatically suitable for everyone.

People with chronic kidney disease or other medical conditions affecting protein metabolism may require personalised dietary advice. Guy’s and St Thomas’ NHS Foundation Trust, for example, specifically advises people with chronic kidney disease to discuss personalised protein targets with a dietitian.

You should also seek professional advice if you are:

• Pregnant or breastfeeding and unsure of your nutritional requirements
• Living with kidney disease
• Living with another condition that affects your diet
• Recovering from significant illness
• Experiencing unexplained weight loss
• Following a medically prescribed diet

For healthy people, the goal should generally be adequate and appropriate protein, not simply the highest possible intake.

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A Practical How Much Protein Should I Eat a Day Plan

Here is a simple framework you can adapt.

If your goal is general health

Start around the UK adult reference value of 0.75g/kg/day.

If you exercise regularly

Consider whether a higher intake is appropriate. The BDA gives approximately 1.4–2.0g/kg/day for athletes involved in strength and endurance sports.

If your goal is muscle gain

A practical target around 1.6–1.7g/kg/day may be useful alongside resistance training and adequate energy intake.

Example: 70kg adult

These figures should be viewed as planning ranges rather than targets that must be hit perfectly every day.

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Protein Timing: Does When You Eat It Matter?

Daily protein intake is generally the first thing to get right.

Once total intake is appropriate, distributing protein across meals can be a practical strategy, particularly for people trying to support muscle maintenance or growth.

For example, someone aiming for approximately 110g per day could organise their intake as:

• Breakfast: 25g
• Lunch: 30g
• Afternoon snack: 15g
• Dinner: 40g

There is no requirement for these numbers to be exact.

The purpose is to avoid making protein an afterthought and then trying to consume a very large amount at the end of the day.

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Protein Quality Matters Too

Protein is made up of amino acids, including essential amino acids that must come from the diet.

Animal proteins such as eggs, dairy, meat and fish are generally rich in essential amino acids. Some plant proteins have different amino-acid profiles, but a varied plant-based diet can still provide adequate protein.

This is one reason dietary variety matters.

Instead of asking whether one food is the “best” protein source, consider the overall pattern:

pulses + grains + soya foods + nuts/seeds + vegetables + other suitable protein sources

A varied diet can make it easier to obtain sufficient protein alongside fibre, vitamins and minerals.

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When Should You Speak to a Dietitian?

Online calculators can provide useful estimates, but they cannot account for every individual circumstance.

Consider professional advice if your situation involves:

• Kidney disease
• Significant liver or metabolic disease
• Pregnancy
• Breastfeeding
• Frailty
• Significant unintentional weight loss
• Eating difficulties
• Recovery from major illness or surgery
• A medically prescribed diet
• A highly restrictive diet

A registered dietitian can consider your medical history, body composition, food intake, activity levels and goals rather than relying on a generic formula.

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FAQ: How Much Protein Should I Eat a Day?

How much protein should I eat a day as an average adult?

The UK reference nutrient intake for adults is 0.75g per kilogram of body weight per day. For a 70kg adult, that works out at about 53g per day. People who exercise regularly may require more.

Is 100g of protein a day too much?

Not necessarily. Whether 100g is appropriate depends on your body weight, activity level, age, health and dietary goals. For someone who weighs 70kg and trains regularly, 100g is roughly 1.43g/kg, which falls within the range the BDA gives for athletes and regular strength or endurance exercise.

How much protein should I eat a day to build muscle?

For someone actively resistance training with muscle gain as a goal, approximately 1.6–1.7g/kg/day is a practical evidence-informed range cited by the BDA. Training, adequate energy and recovery are also essential.

How much protein should I eat a day for weight loss?

There is no single weight-loss protein target that suits everyone. Protein can be included at each meal as part of a calorie-controlled, balanced diet. Your body weight, activity level and overall calorie intake should be considered.

Can I get enough protein without protein powder?

Yes. Protein can come from foods including eggs, dairy, fish, meat, tofu, soya foods, beans, lentils, chickpeas, nuts and seeds. Protein powder is primarily a convenient way of adding protein rather than a nutritional requirement.

Should I eat protein at every meal?

Including a protein source at each main meal can make it easier to reach your daily target without relying on a very large serving at one meal. It also gives you a straightforward structure for planning meals.

Is plant protein enough?

Yes, a varied plant-based diet can provide protein. Include a mixture of foods such as lentils, beans, chickpeas, tofu, soya, nuts, seeds and wholegrains.

What happens if I eat too little protein?

Consistently inadequate protein intake can make it harder to maintain muscle and support normal tissue maintenance. Risk is particularly relevant during illness, poor appetite, ageing or periods of inadequate overall nutrition.

Do I need more protein if I exercise?

Often, yes. The BDA states that athletes participating in strength and endurance sports generally have higher protein requirements than people who do not exercise.

Is a high-protein diet automatically healthy?

No. A high-protein diet can still be poorly balanced if it lacks fibre, fruit, vegetables and other essential nutrients. The quality and overall composition of the diet matter as much as the protein number.

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Final Takeaway: How Much Protein Should I Eat a Day?

So, how much protein should I eat a day? For a typical healthy adult, the UK reference point is around 0.75g/kg of body weight per day. That is a useful baseline, but people who exercise regularly, are older, or have specific nutritional goals may benefit from higher intakes.

The most useful approach is to:

1. Calculate a starting target from your body weight.
2. Adjust it according to your activity and goal.
3. Include protein foods throughout the day.
4. Keep your overall diet balanced.
5. Use supplements for convenience rather than assuming they are essential.
6. Seek professional advice if you have a medical condition or unusual nutritional requirements.

There is no magic protein number that guarantees muscle gain, fat loss or better health. Adequate protein combined with a balanced diet, appropriate exercise and consistent habits is a much more realistic strategy.