Best Mass Gainer Australia 2026

There is no single best mass gainer for everyone - the best weight gainer protein powder depends on your goal. A mass gainer is a high-calorie protein powder that gives you a convenient way to add calories and protein when you are chasing weight-gain goals and struggle to eat enough from food alone.

Below are our top picks by job: best overall, best value, best lean, best high-calorie, best vegan and best Australian-made. Free shipping on orders over $150 AUD.

How we chose these picks

Every product on this list passed four checks:

1. Active and in stock at Elite Supplements

2. Clear calorie and protein disclosure - the label states the kilojoules or calories and the protein per serve, so you know what you are actually adding to your day.

3. A brand we stock and stand behind, for example the Emrald Labs range, our Elite-exclusive line, and established third-party brands with real customer reviews.

4. A clear job it does best - we match each pick to a goal rather than ranking them against each other, because the right gainer depends on how many calories you need and how lean you want to keep it.

This is a curated guide from our category team, not a paid placement order, and there is no "we tested and scored them" ranking behind it.

A quick note on the numbers. Calorie and protein figures vary a lot between gainers and between flavours, so we do not quote them from memory. Check the calories and protein per serve on the live product page before you buy - we have flagged each one below.

How to choose a mass gainer (30-second version)

• Work out your calorie gap first. A mass gainer helps when you cannot eat enough whole food to sit in a calorie surplus. Food first, powder to fill the gap.

• Full gainer vs lean gainer. A full mass gainer packs the most calories per serve (lots of carbs) for hard-to-gain types. A lean gainer keeps the carb load lower for a more controlled surplus. See Emrald Lean Gainer.

• Calories per serve. Higher is not automatically better - it is only better if you actually need those calories. Match the serve to your gap.

• Carb-to-protein ratio. More carbs suits a true hardgainer; a tighter ratio suits a leaner build.

• How you will use it. One big shake, or a half-serve between meals? .

The top picks

Best overall: Emrald Labs Post Mass

Post Mass is a convenient way to add calories and protein around training and across the day. It supports weight-gain goals and supports muscle gain when combined with resistance training and a calorie surplus. Bulking with creatine as well? The Post Mass + Creatine bundle pairs it with creatine monohydrate, or browse the full creatine range.

Best value and Elite exclusive: Greed Mass Gainer

Greed is a cost-effective, convenient way to add calories and protein when your budget is as much a constraint as your appetite. Because it is our exclusive line, we control the supply and the price.

Best lean gainer: Emrald Labs Lean Gainer

A lean gainer is a convenient way to top up calories and protein while keeping the surplus tighter. It supports weight-gain goals and supports muscle gain alongside resistance training, with a lower carb load than a full mass gainer.

Best high-calorie: Optimum Nutrition Serious Mass

If your calorie gap is large, a very high-calorie gainer like Serious Mass is a convenient way to close it in one or two shakes a day. New to big serves? A half-serve is an easy way to start.

Best vegan: PranaON Natural Mass 2.0

Natural Mass 2.0 is a plant-based, convenient way to add calories and protein for weight-gain goals without a dairy source.

Best Australian-made: Emrald Labs

Other active gainers we stock

Not every good gainer fits a headline category. These are also active at Elite and worth a look depending on your brand preference and budget:

• Optimum Nutrition Gold Standard Gainer - a more premium, protein-forward gainer from a trusted brand.

• Emrald Post Mass + Creatine bundle - Post Mass paired with creatine monohydrate for a bulking stack.

• Max's Absolute Mass - a high-calorie gainer from a long-running Australian brand.

• Max's Clean Mass - a leaner-leaning Australian gainer.

• International Protein Extreme Mass - an Australian-made high-calorie option.

• Rule 1 Clean Gainer - a lower-fat, leaner gainer.

Browse everything on the mass gainer collection. We only list products that are active and in stock.

Compare the picks at a glance

Best mass gainer by goal - quick picks

• Best mass gainer overall. Emrald Post Mass - a balanced house-brand full gainer that is easy to drink and easy to stay consistent with.

• Best value mass gainer. Greed Mass Gainer - our Elite-exclusive line, sharp on cost per serve.

• Best lean mass gainer. Emrald Lean Gainer - a lower-carb, more controlled surplus.

• Best mass gainer for skinny guys and true hardgainers. Serious Mass - one of the biggest calorie serves going. See our full guide for mass gainer for skinny guys.

• Best vegan mass gainer. Natural Mass 2.0 - a plant-based gainer with no dairy.

• Best Australian-made mass gainer. Emrald Post Mass or Emrald Lean Gainer

What to look for when buying a mass gainer in Australia

Four things separate a sensible gainer from a forgettable one:

1. The calorie and protein numbers match your goal. A gainer is a tool for hitting a calorie surplus. Read the calories and protein per serve, then match them to the gap between what you eat now and what you need. Bigger is only better if you need bigger.

2. Full gainer or lean gainer. A full gainer stacks the most carbs and calories per serve for people who really struggle to gain. A lean gainer keeps the carb load lower for a tidier surplus. Neither is "better" - it depends on how you gain.

3. It mixes and tastes good enough to keep drinking. The best gainer is the one you will actually finish every day. A chalky one you skip does nothing.

4. A brand you can identify and trust. The Emrald Labs range, our Elite-exclusive Greed line, and established brands like Optimum Nutrition and Prana ON all publish what is in the tub. Avoid no-name "20kg mass" marketplace listings with no manufacturer.

What you do not need to overthink: chasing the single highest calorie number on the front of the tub. A gainer is food in powder form - if you do not need 1,250 calories in one shake, a smaller serve or a lean gainer is the smarter buy. And remember the basics do the heavy lifting: a mass gainer supports weight-gain goals and supports muscle gain when combined with resistance training and a calorie surplus, not on its own.

Frequently asked questions

What is the best mass gainer in Australia?

There is no single best mass gainer for everyone - it depends on your goal. For most people we pick Emrald Post Mass, a balanced full gainer. For value it is the Elite-exclusive Greed, for a leaner surplus the Emrald Lean Gainer, for the biggest calorie serve Serious Mass, and for a plant-based option Natural Mass 2.0. Match the gainer to your calorie gap and how lean you want to stay.

What is the best weight gainer protein powder for skinny guys?

Genuine hardgainers who struggle to eat enough usually do best with a high-calorie full gainer such as Serious Mass, because it closes a big calorie gap in one or two shakes. If you gain fat easily, a lean gainer like Emrald Lean Gainer keeps the surplus tighter. Either way, a gainer works as a top-up to real meals, not a replacement.

Is a mass gainer worth it, or should I just eat more food?

Food first, always. A mass gainer is worth it when you genuinely cannot eat enough whole food to sit in a calorie surplus - it is a convenient way to add calories and protein without forcing down another meal. If you can hit your calories from food, you may not need one. It supports weight-gain goals alongside training and a surplus, not instead of them.

What is the difference between a mass gainer and a lean gainer?

A full mass gainer packs the most calories per serve, mostly from carbs, for people who find it hard to gain weight. A lean gainer keeps the carb and calorie load lower for a more controlled surplus, which suits people who gain fat easily or want to stay leaner while bulking. Same idea, different calorie density - pick the one that matches how your body responds.

How many calories are in a mass gainer?

It varies widely between products and flavours, from a few hundred calories per serve up to well over a thousand in the biggest full gainers. We do not quote a number here because it changes by product - check the calories and protein per serve on the live product page before you buy, and match it to the calorie gap you are trying to fill.

Do mass gainers actually build muscle?

A mass gainer does not build muscle on its own. It is a convenient way to add the extra calories and protein that support weight-gain goals, and it supports muscle gain when combined with resistance training and a calorie surplus. The training and the total calories do the work; the gainer just makes hitting those calories easier.

Which mass gainer is Australian-made?

The Emrald Labs range - including Post Mass and Lean Gainer - is an Australian brand, and there are other Australian brands in our range such as Max's and International Protein. If buying local matters to you, starting with Emrald Post Mass or Lean Gainer is the simplest choice.

Can I take a mass gainer with creatine?

Yes - many people bulking use both. Creatine is one of the most studied training supplements and is commonly stacked with a gainer. We stock a Post Mass and creatine bundle if you want them together, or you can add creatine separately from our creatine range. If you take medication or have a health condition, check with your healthcare professional first.