Free Nutrition Calculators for Australia – Protein, Macro, kJ & More
Welcome to the free nutrition calculators from Wallaby Wellness, a nutrition calculator for Australia built around kilojoules, metric units and Australian reference values. Every tool runs instantly in your browser with no sign-up or email, so you can plan meals, compare products and set goals in minutes. Use them together or pick the one you need.
kJ to Calories ConverterConvert kJ to calories and back, and work out the energy in a serve from an Australian nutrition panel.
Protein Intake CalculatorFind your daily protein range in grams, then turn it into serves of protein powder or bars.
Macro CalculatorEstimate daily energy in kJ and kcal plus protein, carbohydrate and fat targets for your goal.
Water Intake CalculatorSee how much fluid you may need each day, adjusted for exercise, heat, pregnancy and breastfeeding.
Fibre Intake CalculatorTotal the fibre in your meals and compare it with Australian targets of 25 g and 30 g.
Caffeine CalculatorAdd up caffeine from coffee, tea, energy drinks and pre-workout, and estimate what is left at bedtime.
Which nutrition calculator should I use?
If you are comparing products on the shelf, start with the kJ to calories converter, which turns any Australian label into calories. If you are planning meals or supplements, work out your daily protein first, then your overall macro targets. For everyday health and recovery, check your hydration needs, your fibre intake and your caffeine total. Not sure where to begin? Most people start with the macro calculator, then fine-tune with protein, fibre and hydration.
Sports nutrition calculator tools for muscle gain
If you want a muscle gain nutrition calculator, the best path is the macro calculator with the "Build muscle" goal. It sets a modest energy surplus and a higher protein target. Then use the protein calculator to see how many serves of whey or plant protein fill the gap, and the water calculator to plan fluids around training. Together they work as a simple sports nutrition calculator for Australian lifters, runners and gym regulars.
How our nutrition calculators work
The calculators give general estimates based on published Australian and international guidance. Energy uses the Mifflin-St Jeor equation, protein and fluid targets follow the Australian and New Zealand Nutrient Reference Values and sports nutrition ranges, and energy in food uses the Food Standards Australia New Zealand (FSANZ) labelling factors of 17 kJ per gram of protein, 16 for carbohydrate and 37 for fat. Results are a starting point, so track your progress and adjust.
Shop what you need
Once you know your numbers, browse products that fit your plan. Wallaby Wellness stocks protein powders, bars, hydration, snacks and pantry staples for Australian shoppers.
Protein powderProtein barsFibre Boost barsHealthy snacksHydrationElectrolytesPre workoutDrinksNuts, dried fruits & seeds
Frequently asked questions
Are the nutrition calculators free?
Yes. Every calculator is free to use, runs in your browser and does not ask for your email or any sign-up.
Are the results accurate?
They are estimates based on published Australian and international guidance. Individual needs vary, so use them as a starting point and adjust based on your progress.
Which calculator is best for building muscle?
Start with the macro calculator set to build muscle, then use the protein intake calculator to turn your target into serves of protein powder or food.
Can I use these calculators if I am pregnant or have a health condition?
These tools give general information only. If you are pregnant, breastfeeding, have a medical condition or are making big changes to your diet, speak to your doctor or an accredited practising dietitian.
General information only, not medical or dietary advice. If you have a medical condition, are pregnant or breastfeeding, or are making big changes to your diet, speak to your doctor or an accredited practising dietitian.