Calorie Calculator
Calculate your daily calorie needs based on your age, gender, height, weight and activity level.
Disclaimer
This calculator provides estimates for general information purposes only. Results are based on standard formulas and may not reflect your individual circumstances. Always consult a qualified professional for advice specific to your situation.
Frequently Asked Questions
How accurate are calorie calculators?
How many calories should I eat to lose weight?
What is Calorie?
A calorie calculator estimates your daily energy needs (calories) based on your age, gender, height, weight, and activity level. Knowing your Total Daily Energy Expenditure (TDEE) is the foundation for any weight management plan.
How this calculator works
The calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating Basal Metabolic Rate (BMR). BMR is then multiplied by an activity factor (1.2 for sedentary up to 1.9 for extremely active) to estimate your TDEE. The results show calorie targets for five goals: weight loss (500 cal deficit), mild loss (250 deficit), maintenance, mild gain (250 surplus), and weight gain (500 surplus). A 500-calorie daily deficit typically results in approximately 0.5kg of weight loss per week.
All calculations are performed in your browser — your data never leaves your device. Results are for general guidance only and should not be considered professional financial advice.
Built and maintained by Konstantin Iakovlev. Data sourced from the ATO and official Australian government sources.