How Much Protein Do You Need Each Day? A Practical Guide for Women

How Much Protein Do You Need Each Day? A Practical Guide for Women

How much protein do I need each day?

It's a simple question, but the answer can feel surprisingly complicated.

You may have seen recommendations for 50g, 100g or even 150g of protein a day. You might also be wondering whether women need more protein after 30, whether you need protein powder if you exercise, or how to actually reach your protein goal without eating chicken at every meal.

The truth is that your protein needs depend on several factors, including your body weight, activity levels, age and goals.

For most women, the goal isn't to obsess over a perfect number. It's to understand what your body may need and find realistic ways to include enough protein as part of a balanced diet.

Let's break it down.

Why is protein important?

Protein is one of the three macronutrients your body needs, alongside carbohydrates and fats.

Your body uses protein to build and repair tissues and to produce important substances including enzymes and hormones. Protein is also important for maintaining muscle.

This matters throughout life, but maintaining muscle becomes increasingly relevant as we get older.

Regular physical activity, particularly resistance training, combined with adequate nutrition can help support muscle strength and physical function as we age.

That doesn't mean you suddenly need a huge amount of protein when you turn 30.

Instead, your 30s, 40s and beyond can be a good time to start thinking about protein as part of the bigger picture of healthy ageing.

Think of it as one of the building blocks that helps support a strong, active body.

So, how much protein does a woman need?

For Australian women, the official Recommended Dietary Intake (RDI) for protein is:

0.75g of protein per kilogram of body weight per day for women aged 19–70.

For women over 70, the RDI is 0.94g/kg/day.

Here's a simple example.

If you weigh 65kg:

65 × 0.75 = approximately 49g of protein per day

That's the Australian RDI for a 65kg adult woman aged 19–70.

However, this is where things become more individual.

The RDI is designed to cover the protein requirements of almost all healthy people within a particular population group. It isn't necessarily a target designed specifically for an active woman who regularly trains.

If you exercise regularly, particularly if you participate in strength or resistance training, your protein needs may be higher.

The Australian Institute of Sport suggests protein targets of approximately 1.2–1.6g/kg/day for athletes undertaking heavy training.

For a 65kg woman, that would be approximately:

  • 1.2g/kg = 78g/day
  • 1.4g/kg = 91g/day
  • 1.6g/kg = 104g/day

These numbers aren't rules that every active woman needs to follow. They're a useful way of understanding how protein requirements can vary with training.

Does every woman need 100g of protein a day?

No.

You may have seen "100g of protein a day" presented as a universal goal for women online.

But there isn't one protein target that works for everyone.

A 50kg woman who doesn't exercise regularly and a 75kg woman who strength trains several times a week have different nutritional needs.

That's why it's more useful to think about protein in relation to your body weight, activity level and goals, rather than choosing a number because it's popular on social media.

For some active women, 100g may be a reasonable daily intake. For others, it may be more than they need.

Your protein target should be considered as part of your overall diet rather than in isolation.

What about protein after 30?

This is one of the most common questions women ask.

You may have heard that women suddenly need significantly more protein once they reach 30.

That's an oversimplification.

Australian protein recommendations don't suddenly increase when you turn 30. The RDI for women aged 19–70 remains 0.75g/kg/day.

What does become increasingly important as we age is maintaining muscle and physical function.

Muscle mass and strength naturally change over the course of adulthood. Staying active, particularly through resistance training, is an important part of supporting muscle health.

Adequate protein is another piece of that picture.

So rather than thinking:

"I'm over 30, so I need a huge amount of protein."

A more useful way to think about it is:

"As I get older, I want to make maintaining strength and muscle a priority."

Protein can help support that goal, alongside resistance training, regular movement, adequate sleep and an overall nutritious diet.

Does it matter when you eat your protein?

Your total protein intake across the day is an important consideration, but the way you distribute protein can also be useful.

The Australian Institute of Sport recommends that athletes spread protein across several eating occasions rather than consuming most of it in one meal. It gives a practical target of around 0.3–0.4g/kg at each meal or snack for athletes.

For many women, this doesn't mean weighing food or calculating every meal.

It can simply mean making protein a regular part of breakfast, lunch, dinner and, if needed, a snack.

For example:

Breakfast:
Greek yoghurt with berries, seeds and wholegrain toast

Lunch:
Chicken, tofu or tuna salad with wholegrain bread

Snack:
Cottage cheese and fruit

Dinner:
Salmon, lean meat, tofu or legumes with vegetables and rice or potatoes

You don't need every meal to be perfect.

The goal is simply to avoid leaving almost all of your protein intake until dinner.

How much protein is in common foods?

You don't need to memorise a nutrition database to eat more protein.

Instead, start becoming familiar with the protein-rich foods you already enjoy.

Animal-based protein sources

  • Eggs
  • Greek yoghurt
  • Cottage cheese
  • Milk
  • Chicken
  • Turkey
  • Fish and seafood
  • Lean meat

Plant-based protein sources

  • Tofu
  • Tempeh
  • Lentils
  • Chickpeas
  • Beans
  • Edamame
  • Nuts
  • Seeds
  • Soy products

Australian dietary guidance includes lean meat and poultry, fish, eggs, tofu, nuts, seeds and legumes among foods that contribute protein to the diet.

And you don't have to choose between plant and animal protein.

Both can have a place in a varied, balanced diet.

How can you reach your protein goal?

If you're currently unsure how much protein you're eating, don't try to completely change your diet overnight.

Instead, look at your meals one at a time.

Start with breakfast

Breakfast is often a meal where protein can be relatively low.

You could add:

  • Greek yoghurt
  • Eggs
  • Cottage cheese
  • Milk
  • Soy yoghurt
  • A protein smoothie

For example, instead of toast with jam alone, you might have eggs on toast with Greek yoghurt and fruit.

Make lunch more protein-focused

If your lunch is mainly vegetables or grains, consider adding a protein source such as:

  • Chicken
  • Tuna
  • Eggs
  • Tofu
  • Tempeh
  • Chickpeas
  • Lentils

A simple salad can become a much more substantial meal by adding chicken, tofu, beans or another protein source.

Don't forget snacks

A snack doesn't have to be a protein bar or shake.

You could try:

  • Greek yoghurt and berries
  • Cottage cheese and fruit
  • Boiled eggs
  • Edamame
  • A smoothie
  • Nuts with yoghurt

Build dinner around a protein source

Think of protein as one component of your meal rather than the entire meal.

For example:

Salmon + potatoes + vegetables

Chicken + rice + stir-fried vegetables

Tofu + noodles + vegetables

Lentil curry + rice + vegetables

This approach makes protein part of a normal diet rather than something you have to force yourself to eat.

Do you need protein powder?

Not necessarily.

Many people can meet their protein needs through everyday foods, and protein supplements aren't required simply because you exercise.

A protein powder can, however, be a convenient option when you're busy, travelling, exercising regularly or finding it difficult to get enough protein from meals.

For example, adding protein powder to a smoothie can be an easy way to increase the protein content of breakfast or a snack.

The important distinction is:

Protein powder is a supplement, not a replacement for a nutritious diet.

You don't need a protein shake simply because you went to the gym.

And you don't necessarily need to drink one immediately after every workout.

If a protein shake helps you conveniently meet your overall protein needs, it can be a useful tool. If you're already getting enough protein from food, you may not need one at all.

This is also why our upcoming guide on Whey vs Plant Protein will look at the differences between the two rather than assuming one is automatically better for every woman.

What if you're trying to lose weight?

Protein often comes up in conversations about weight loss, but it's important not to think of it as a magic ingredient.

Your overall dietary intake matters, as do movement, resistance training, sleep and consistency.

For women who are interested in changing their body composition, adequate protein alongside resistance training can be particularly relevant.

The goal isn't simply to make the number on the scales smaller. Supporting muscle while improving overall body composition can also be an important consideration.

It's worth remembering that nutrition and body composition are individual. A strategy that works well for one woman may not be appropriate for another.

A simple example of reaching your protein goal

Let's put everything together.

Imagine a 65kg woman who exercises regularly and chooses to aim for approximately 1.4g/kg/day.

That works out to:

65 × 1.4 = approximately 91g of protein per day

She doesn't need to eat 91g in one sitting.

Instead, she could spread her intake across the day.

Breakfast:
A protein-rich yoghurt bowl with berries and seeds

Lunch:
Chicken or tofu salad with wholegrain bread

Afternoon snack:
A protein smoothie or cottage cheese with fruit

Dinner:
Salmon, chicken, tofu or legumes with vegetables and rice or potatoes

The exact amount of protein in each meal will vary.

The important idea is that she is including a meaningful source of protein regularly throughout the day.

That's much more practical than trying to "catch up" on protein at night.

The easiest way to increase your protein intake

If you're currently eating very little protein, don't make it complicated.

Start with one meal.

If breakfast is usually low in protein, add Greek yoghurt or eggs.

Once that feels easy, look at lunch.

Then consider whether your snacks and dinner are providing enough.

Small changes can add up.

You don't need to completely redesign your diet to eat more protein.

The bottom line

There isn't one perfect protein target for every woman.

For Australian women aged 19–70, the official RDI is 0.75g of protein per kilogram of body weight per day. Women who undertake heavy training may have higher requirements, with the Australian Institute of Sport suggesting approximately 1.2–1.6g/kg/day for athletes in heavy training.

Rather than chasing a number you saw online, consider:

Your body weight

How active you are

Whether you regularly strength train

Your individual goals

Then focus on making protein a regular part of your meals.

You don't have to eat perfectly.

You don't need enormous amounts of protein.

And you don't need supplements to have a healthy diet.

For most women, a good place to start is simple:

Build meals around nutritious foods, include a source of protein regularly, stay active and focus on consistency rather than perfection.

Frequently Asked Questions

How much protein should a woman eat per day?

The Australian RDI for women aged 19–70 is 0.75g of protein per kilogram of body weight per day. Individual needs can be higher depending on activity levels, training and other circumstances.

Is 100g of protein a day enough for a woman?

It can be appropriate for some women, particularly those who are physically active, but there is no universal 100g target. Protein needs depend on factors including body weight, activity and individual circumstances.

Do women need more protein after 30?

Not automatically. Australian protein recommendations don't increase at age 30. However, maintaining muscle and strength becomes increasingly important as we age, making adequate nutrition and regular resistance training valuable parts of a healthy lifestyle.

Do I need protein powder if I exercise?

No. You can get protein from everyday foods. Protein powder is simply a convenient option if you're finding it difficult to meet your needs through meals and snacks.

Should I have protein before or after a workout?

Both can be appropriate. Rather than worrying about a perfect post-workout window, focus first on getting enough protein across the day and including protein regularly around your training. The Australian Institute of Sport recommends spreading protein across multiple eating occasions.

Can women get enough protein from a plant-based diet?

Yes. Foods such as tofu, tempeh, lentils, beans, chickpeas, edamame, nuts and seeds can all contribute to your protein intake. A varied diet can provide protein alongside a range of other nutrients.

What if I have a medical condition?

Protein requirements can vary depending on your health and circumstances. People with certain medical conditions, as well as those who are pregnant, breastfeeding or recovering from illness, may have different nutritional requirements.

If you're unsure what is appropriate for you, speak with your doctor or an Accredited Practising Dietitian.

 

 

Sources & Further Reading

  • Australian Government — Eat for Health: Nutrient Reference Values: Protein

  • Australian Institute of Sport: Isolated Protein Supplements

  • Australian Dietary Guidelines: Protein-containing food groups

  • Dietitians Australia: Protein and healthy eating guidance

  • Peer-reviewed research relating to protein intake, exercise and muscle health

About this article: This article was prepared by the VitaNest Editorial Team using information from Australian government nutrition guidance, recognised sports-nutrition organisations and scientific research.It is intended for general educational purposes and is not a substitute for individual medical or dietary advice.

Last reviewed: August 2026