Fast Forward Nutrition
The FORWARD Method™
Daily Energy Needs Calculator Calories & Kilojoules (kcal / kJ)
Estimate the energy your body uses at rest and across an average day. This calculator provides a starting estimate based on your age, height, weight, sex used in the equation and usual activity level. Results show in calories (kcal) or kilojoules (kJ), the unit on Australian food labels.
Your result is an estimate, not a directly measured metabolism or a personalised calorie prescription.
Your details
Enter your age in years.
Accepted range: 120–230 cm.
Accepted range: 35–300 kg.
Your estimate
Estimated basal metabolic rate
—kcal / day
Your estimated BMR is the energy your body would use at complete rest to support essential functions such as breathing, circulation and temperature regulation. It is not a suggested calorie intake.
Estimated daily energy needs
—kcal / day
This estimate includes your basal metabolism and an allowance for your usual movement, work and exercise.
Estimated maintenance starting range
—kcal / day
Energy expenditure changes from day to day. A range is generally more realistic than treating one number as exact.
Possible starting estimates
These are general starting estimates, not personalised prescriptions. They do not account for your full medical history, dieting history, body composition, appetite, medications or individual response. A larger calorie reduction is not automatically more effective or appropriate.
Numbers provide a starting point. Your appetite, health, routines, progress and ability to sustain the target provide the context.
Make your numbers easier
Plan this week’s meals around your energy needs
Updated every weekUse This Week’s Specials to build filling, balanced meals that fit your daily energy estimate — with the best supermarket specials on fresh proteins, so eating well costs less.
Open This Week’s SpecialsKeep a copy of your result
Send your estimate to yourself, or copy it to paste anywhere you like.
Your result stays with you. It is never sent to, or stored by, Fast Forward Nutrition.
Reality check
Is This Calorie Target Actually Right for You?
Complete the 2-minute Energy Needs Reality Check
A calculator can estimate your energy needs, but it cannot account for your full health history, previous dieting, appetite, sleep, medications, hormonal changes or relationship with food. Complete this short reality check to see whether your result may be a reasonable starting point or whether it may need more individual context.
First, what would you most like support with?
Select any that are relevant. This helps tailor your Reality Check and the follow-up to what matters most to you.
Your goals and Reality Check answers stay in your browser. They are never sent to or stored by Fast Forward Nutrition.
Unlock your Reality Check
Enter your details to reveal your Energy Needs Reality Check on this page.
Energy Needs Reality Check
Answer each question with the option that best fits. Your answers stay in your browser and are not saved or sent anywhere.
Your Reality Check result
Your Energy Needs Reality Check score: out of 24
Information can tell you what may help. Personalised guidance, structured support and accountability can help turn that information into sustainable action. Research evaluating individualised nutrition care and structured behavioural support has found improvements in weight-management and selected health outcomes compared with minimal support or usual care.
Stop guessing. Start moving FORWARD.
For personalised nutrition advice based on your health, lifestyle and goals, explore The FORWARD Method™.
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Common questions
How many kilojoules are in a calorie?
One food calorie (kcal) equals 4.184 kilojoules (kJ). To convert calories to kilojoules, multiply by about 4.2, so 2,000 kcal is roughly 8,400 kJ. To convert kilojoules to calories, divide by about 4.2.
Should I use calories or kilojoules?
Either works. They measure the same thing in different units. Australian food labels must show kilojoules and many also show calories, so kilojoules can make label comparisons easier. Use the switch at the top of your results to choose.
What is BMR?
Your basal metabolic rate (BMR) is the energy your body uses at complete rest for essentials like breathing, circulation and temperature regulation. Your daily energy needs add an allowance for your usual movement, work and exercise on top of your BMR.
How accurate is this calculator?
It uses the Mifflin-St Jeor equation, one of the most widely used and validated estimates. Actual needs still vary from person to person, so treat your result as a starting point and adjust based on your energy, hunger, progress and wellbeing.
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