How much protein do I need per day in Australia?

The Australian NHMRC recommends 0.75-0.84 g/kg/day for adults as a minimum (RDI). However, active individuals benefit from 1.2-2.2 g/kg/day depending on exercise type and intensity. Most Australians easily meet the minimum but may fall short for optimal muscle maintenance.

Can I eat too much protein?

For healthy adults, protein intakes up to 2.2 g/kg/day are well-tolerated. Very high intakes above 3 g/kg have not shown additional benefits. People with kidney disease should consult their doctor before increasing protein, as it may worsen kidney function.

What are the best sources of protein in Australia?

High-quality Australian protein sources include lean meats (chicken breast 31g/100g, kangaroo 23g/100g), fish (tuna 30g/100g, salmon 25g/100g), eggs (13g/100g), dairy (Greek yoghurt 10g/100g), and plant sources like lentils (9g/100g) and tofu (8g/100g).

Should I spread protein across meals?

Yes. Research suggests that distributing protein evenly across 3-5 meals (20-40g per meal) maximises muscle protein synthesis. Eating all your protein in one meal is less effective for muscle building and repair.

Protein Intake Calculator

This Protein Intake Calculator estimates how much protein you need each day based on your body weight, activity level, and fitness goal. Whether you're trying to lose weight, build muscle, or maintain your health, getting the right amount of protein is essential. Recommendations are based on Australian NHMRC guidelines and current sports nutrition research.

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Body Weight

Activity Level

Meals Per Day

How It Works

Your daily protein requirement is calculated by multiplying your body weight in kilograms by a protein factor that depends on your activity level and goal. Sedentary adults need around 0.8 g/kg, those doing moderate exercise need 1.2-1.4 g/kg, strength athletes need 1.6-2.0 g/kg, and those focused on muscle gain need 1.8-2.2 g/kg. The result is then split across your chosen number of meals for optimal absorption.

Quick Reference

Activity Level	Protein (g/kg)	Example (70 kg)	Example (85 kg)	Example (100 kg)
Sedentary (minimal exercise)	0.8 g/kg	56 g	68 g	80 g
Light exercise (1-3 days/wk)	1.0 g/kg	70 g	85 g	100 g
Moderate exercise (3-5 days/wk)	1.2 g/kg	84 g	102 g	120 g
Moderate-high (4-5 days/wk)	1.4 g/kg	98 g	119 g	140 g
Strength training (5-6 days/wk)	1.6 g/kg	112 g	136 g	160 g
Heavy strength training	1.8 g/kg	126 g	153 g	180 g
Muscle gain focus	2.0 g/kg	140 g	170 g	200 g
Elite / competitive athlete	2.2 g/kg	154 g	187 g	220 g
NHMRC RDI (men)	0.84 g/kg	59 g	71 g	84 g
NHMRC RDI (women)	0.75 g/kg	53 g	64 g	75 g

Based on Australian NHMRC Nutrient Reference Values and International Society of Sports Nutrition (ISSN) position stands.

Frequently Asked Questions

How much protein do I need per day in Australia?: The Australian NHMRC recommends 0.75-0.84 g/kg/day for adults as a minimum (RDI). However, active individuals benefit from 1.2-2.2 g/kg/day depending on exercise type and intensity. Most Australians easily meet the minimum but may fall short for optimal muscle maintenance.
Can I eat too much protein?: For healthy adults, protein intakes up to 2.2 g/kg/day are well-tolerated. Very high intakes above 3 g/kg have not shown additional benefits. People with kidney disease should consult their doctor before increasing protein, as it may worsen kidney function.
What are the best sources of protein in Australia?: High-quality Australian protein sources include lean meats (chicken breast 31g/100g, kangaroo 23g/100g), fish (tuna 30g/100g, salmon 25g/100g), eggs (13g/100g), dairy (Greek yoghurt 10g/100g), and plant sources like lentils (9g/100g) and tofu (8g/100g).
Should I spread protein across meals?: Yes. Research suggests that distributing protein evenly across 3-5 meals (20-40g per meal) maximises muscle protein synthesis. Eating all your protein in one meal is less effective for muscle building and repair.

How This Is Calculated

Daily Protein (g) = Body Weight (kg) x Protein Factor (g/kg) Protein per Meal (g) = Daily Protein / Number of Meals Protein Calories = Protein (g) x 4 kcal/g Protein kJ = Protein Calories x 4.184

0.8 g/kg: = Sedentary adults (NHMRC minimum RDI)
1.2-1.4 g/kg: = Moderate exercise and general fitness
1.6-2.0 g/kg: = Strength training and endurance athletes
1.8-2.2 g/kg: = Muscle gain and bodybuilding focus
4 kcal/g: = Energy density of protein

Recommendations based on NHMRC Nutrient Reference Values for Australia and New Zealand (2006, updated 2017) and the International Society of Sports Nutrition position stand on protein and exercise (2017).

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Disclaimer

This calculator provides estimates for informational purposes only and should not be considered medical advice. Individual results may vary based on factors not captured by these formulas. Consult a healthcare professional before making changes to your diet or exercise routine, especially if you have any existing health conditions.