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Q: How many calories are in a protein bar?

It depends on the size and style of the bar. Lighter crisp and wafer bars sit at the lower end, while larger, denser or coated bars have more calories. Compare calories per bar on the nutrition panel rather than per 100g.

Q: Are protein bars a meal replacement?

No. Protein bars are designed as a snack, not a full meal. If you're looking for something to have in place of a meal, meal replacement shakes are made for that purpose. Protein bars should be eaten as part of a balanced diet.

Q: When should I eat a protein bar?

Many people eat protein bars as a snack between meals, after training, or when they're busy, at work or travelling. There's no set time, so choose what fits your routine and follow the serving information on the label.

Q: Do you have low carb and low sugar protein bars?

Yes. We stock a range of low carb and low sugar protein bars from brands including Max's, BSc Supplements and Quest Nutrition. Check the nutrition panel for total carbs, sugar and fibre per bar.

Q: What are sugar alcohols in protein bars?

Sugar alcohols, also called polyols, are sweeteners such as erythritol, maltitol and xylitol. They're often used in low sugar protein bars. They're listed in the ingredients, and eating too much may have a laxative effect.

Q: Do you have vegan or plant-based protein bars?

Yes. We stock plant-based protein bars made with plant proteins instead of dairy, such as the Plant Protein Choc Layered Bar by CMBT. Check the label to confirm a bar is vegan and suits your dietary needs.

Q: Is a protein bar or a protein shake better?

They suit different situations. Protein bars need no mixing and are easy to carry, while protein shakes usually give more protein for less cost per serve. Many people use both, depending on the day.

Q: Can I buy protein bars by the box?

Yes. Most protein bars are available as single bars or in boxes. Buying a box usually works out cheaper per bar, so many people try a single bar first and then buy a box of their favourite flavour.

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Protein Bars Buying Guide

Shop protein bars online from trusted brands including Quest Nutrition, Fibre Boost, Musashi, Max's and CMBT.

Last Updated: Tuesday 3rd November 2026

What Are Protein Bars?

Protein bars are ready-to-eat snack bars made with added protein, usually from whey, milk protein, collagen or plant proteins. Most high protein bars contain around 15g to 22g of protein per bar, and they come in plenty of styles, from chewy and crisp bars to soft, dessert-style and plant-based options. They're an easy way to add protein to your day when you don't have time to make a shake or a meal.

At Nutrition Warehouse, you can buy protein bars online as single bars or by the box from trusted brands, and they're part of our full protein supplements range. Want to see which ones customers rate highest? Check out our Top 10 Protein Bars for 2026.

Types of Protein Bars

Protein bars vary a lot in texture, ingredients and macros. Here's how the main types compare:

Type	What It Is	Example
Classic high protein bars	Chewy bars with around 20g of protein and low sugar	Quest Bar by Quest Nutrition
Low carb protein bars	Bars with a lower carbohydrate profile, often sweetened with sugar alcohols	SuperShred Bars by Max's Supplements
High fibre and cold-pressed bars	Bars with added fibre, often made without baking	Cold Pressed Protein Bar by Fibre Boost
Soft and dessert-style bars	Softer, treat-style bars inspired by classic desserts and snacks	Soft Protein Bar by BSc Supplements
Crisp and wafer bars	Lighter bars with a crispy or wafer texture	Protein Crisp Bar by Musashi
Plant-based protein bars	Bars made with plant proteins instead of dairy	Plant Protein Choc Layered Bar by CMBT
Collagen bars	Bars and jellies made with collagen protein	NoWay Collagen Marshmallow Bar by ATP Science
Savoury meat bars	Savoury bars made from meat instead of dairy or plant protein	Beef Bar by Chief

Protein, calories and ingredients vary by bar and flavour, so always check the nutrition panel.

Protein Bars vs Protein Shakes vs Meal Replacements

Protein bars are a snack, so they're easy to keep in your bag, car or desk drawer with no mixing needed. A shake made with protein powder usually gives more protein for less cost per serve, but you need a shaker and liquid. Protein bars aren't designed to replace meals. If you're looking for something to have in place of a meal, look at meal replacement shakes, which are made for that purpose.

Low Calorie and Low Sugar Protein Bars

Calories in protein bars vary a lot. Lighter crisp and wafer bars sit at the lower end, while larger, denser or coated bars have more. If you're after a low calorie protein bar, compare the calories per bar, not per 100g, as bar sizes differ. Many low sugar and sugar-free protein bars use sugar alcohols (polyols) such as erythritol or maltitol for sweetness. These are listed on the label, and eating too much may have a laxative effect.

How to Choose the Right Protein Bar

Protein per bar: check how much protein each bar provides and where it comes from, such as whey, milk protein, collagen or plant protein.
Carbs, sugar and fibre: compare total carbs, sugar and fibre if you're watching your macros, and check for sugar alcohols.
Calories: compare calories per bar, especially if you're looking for a lighter snack.
Dietary needs: check the label for allergens, and look for plant-based options if you avoid dairy.
Texture and flavour: choose from chewy, crisp, soft or layered bars in sweet or savoury flavours.
Single bars or boxes: try a single bar first, then buy a box once you've found a favourite, as boxes usually work out cheaper per bar.

When to Eat a Protein Bar

Many people keep protein bars on hand as a snack between meals, after training, or for busy workdays and travel. Read the label for serving information and storage instructions. Keep bars in a cool, dry place, as some coated bars can soften in the heat. Protein bars should be eaten as part of a balanced diet.

Shop Popular Protein Bars

Some of the most popular protein bars at Nutrition Warehouse:

Smart Protein Bar by Smart Diet Solutions: 20g of protein and almost 20g of fibre per bar
The Volk Bar by CMBT: 17.5g of protein per 50g bar with no sugar alcohols
Pro 20 + Fibre by Gen-Tec Nutrition: a soft nougat bar with 20g of protein and prebiotic fibre
OxyShred Lean Protein Bars by EHP Labs: a soft, dessert-style protein bar
Protein Bar by Optimum Nutrition: a protein bar from Optimum Nutrition in a range of flavours
High Protein Low Carb Protein Bar by BSc Supplements: a soft, chocolatey low carb bar
High Protein Bar by Musashi: a high protein bar from Musashi

Other Protein Snacks

Looking for something other than a bar? Explore these options:

Protein cookies: soft and baked-style cookies with added protein
Protein snacks: chips, bites, spreads and other high protein snacks
Protein baking mixes: pancake, muffin and brownie mixes with added protein
Protein drinks: ready-to-drink protein shakes

Or browse our full protein bars, cookies and snacks range.

Why Buy Protein Bars from Nutrition Warehouse?

Over 70 protein bars from trusted brands, available as single bars or boxes
Expert advice in-store and online across 120+ locations
Click & Collect available same day
SameDaySupps delivery in select metro areas
Free shipping over $150
Best Price Guarantee — we'll beat any competitor by $1 and throw in a free shaker

What are protein bars?

How much protein is in a protein bar?

How many calories are in a protein bar?

Are protein bars a meal replacement?

When should I eat a protein bar?

Do you have low carb and low sugar protein bars?

What are sugar alcohols in protein bars?

Do you have vegan or plant-based protein bars?

Is a protein bar or a protein shake better?

Can I buy protein bars by the box?

How should I store protein bars?

Where can I buy protein bars in Australia?

Sale Best Seller Best Seller

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${collectionTitle} (${response?.total_num_results || 0})

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Protein Bars Buying Guide

What Are Protein Bars?

Types of Protein Bars

Protein Bars vs Protein Shakes vs Meal Replacements

Low Calorie and Low Sugar Protein Bars

How to Choose the Right Protein Bar

When to Eat a Protein Bar

Shop Popular Protein Bars

Other Protein Snacks

Why Buy Protein Bars from Nutrition Warehouse?

Frequently Asked Questions

What are protein bars?

How much protein is in a protein bar?

How many calories are in a protein bar?

Are protein bars a meal replacement?

When should I eat a protein bar?

Do you have low carb and low sugar protein bars?

What are sugar alcohols in protein bars?

Do you have vegan or plant-based protein bars?

Is a protein bar or a protein shake better?

Can I buy protein bars by the box?

How should I store protein bars?

Where can I buy protein bars in Australia?

You might also like

Join free.
Earn up to 7.5% Store Credit

${ gift.displayName }

Results for ${searchQuery}

${isZeroState ? 'Top Searched Terms' : 'Search Suggestions'}

Recent Searches

Popular Categories

${isZeroState ? 'Best Selling Products' : 'Products'}

${collectionTitle} (${response?.total_num_results || 0})

${collectionTitle} (${response?.total_num_results || 0})

Protein Bars Buying Guide

What Are Protein Bars?

Types of Protein Bars

Protein Bars vs Protein Shakes vs Meal Replacements

Low Calorie and Low Sugar Protein Bars

How to Choose the Right Protein Bar

When to Eat a Protein Bar

Shop Popular Protein Bars

Other Protein Snacks

Why Buy Protein Bars from Nutrition Warehouse?

Frequently Asked Questions

What are protein bars?

How much protein is in a protein bar?

How many calories are in a protein bar?

Are protein bars a meal replacement?

When should I eat a protein bar?

Do you have low carb and low sugar protein bars?

What are sugar alcohols in protein bars?

Do you have vegan or plant-based protein bars?

Is a protein bar or a protein shake better?

Can I buy protein bars by the box?

How should I store protein bars?

Where can I buy protein bars in Australia?

You might also like

Join free.Earn up to 7.5% Store Credit

${ gift.displayName }

Join free.
Earn up to 7.5% Store Credit