How Much Protein Per Day and Per Scoop: A Simple Australian Guide

July 2, 2026

If you have ever stood in the kitchen holding a scoop and wondered whether you are having too much, too little, or just guessing, this guide is for you. Working out how much protein powder per day you need comes down to two simple numbers: your daily protein target, and how much protein sits in a single scoop. Get those two right and the rest falls into place.

Short answer: Most adults need somewhere between 0.75 and 2.2 grams of protein per kilogram of body weight a day depending on how active they are, and a single scoop of powder usually delivers about 20 to 25 grams of protein. For most people, one to two scoops a day is enough to top up the protein they already get from food.

How much protein do you need per day?

Your daily target depends on your body weight, your activity level, and your stage of life.

For adults who do not train, the Nutrient Reference Values used in Australia sit at about 0.75 grams of protein per kilogram of body weight a day for women and 0.84 grams for men. As Better Health Channel notes, most Australians already meet this through food alone, and very high protein diets are not recommended.

Once you train regularly, your needs rise. The Australian Institute of Sport puts athletes in heavy training at 1.2 to 1.6 grams per kilogram a day, and at 1.6 to 2.4 grams per kilogram for athletes losing weight who want to protect muscle. For building muscle specifically, peer-reviewed sports medicine guidance points to roughly 1.6 to 2.2 grams per kilogram a day to optimise results.

A quick way to find your number: multiply your weight in kilograms by the figure that matches you.

You are	Daily target
Not training	0.75 to 0.84 g per kg
Active or training regularly	1.2 to 1.6 g per kg
Building muscle	1.6 to 2.2 g per kg
Losing fat, keeping muscle	1.6 to 2.4 g per kg

How much protein is in a scoop?

Here is where people get caught out, because there is no single standard. A scoop of protein powder usually holds about 25 to 35 grams of powder, and that delivers roughly 20 to 25 grams of actual protein. The exact amount depends on the type and the brand, since a whey isolate packs more protein into the same scoop than a concentrate or a plant blend.

The reliable number is on the pack. Look at the nutrition panel for the serving size and the grams of protein per serve, for example "Protein: 24 g per serve (30 g)". That is your true figure for how much protein is in a scoop of your powder.

If you have lost the scoop, about two level tablespoons of powder is a rough stand-in, or weigh out the serving size from the label on a kitchen scale.

How many scoops of protein powder per day?

For most people, one to two scoops a day is plenty as a top-up alongside meals. The aim is your total daily target, so the number of scoops simply fills whatever gap your food leaves.

Work it in three steps:

Set your daily target (weight in kilograms multiplied by the figure from the table above).
Estimate the protein you already get from food across the day.
Use one or two scoops to close the gap.

A worked example. An 80 kilogram person who trains and is aiming for 1.6 grams per kilogram needs about 128 grams of protein a day. If their meals provide around 80 grams, that leaves a gap of roughly 48 grams. Two scoops at about 24 grams each cover it neatly, ideally spread out rather than taken together.

Can you have too much in one go?

You do not need to load it all into one shake. The Australian Institute of Sport recommends spreading protein across the day, in serves of about 0.3 to 0.4 grams per kilogram, which works out to roughly 15 to 30 grams at each of three to five eating occasions. Most people are well served by around 20 to 30 grams of protein per meal, which is exactly what a standard scoop provides.

Whole food comes first, and a powder fills the gap. If you have a kidney condition or you are pregnant or breastfeeding, talk to your GP before increasing your protein intake, since your needs and limits are different.

Frequently asked questions

How much protein powder per day is too much? There is no single cut-off, but aim for your overall daily protein target rather than piling in extra scoops. Most people do well on one to two scoops a day on top of food.

How much protein is in one scoop? Usually about 20 to 25 grams, though it varies by brand and type. Check the nutrition panel on your tub for the exact figure.

How many scoops of protein powder should I take a day? Enough to close the gap between the protein you get from food and your daily target, which for most people is one to two scoops.

Does the scoop size mean the same across brands? No. Scoop sizes differ, so always go by the grams of protein on the label rather than the scoop itself.