Enter values and select Calculate to see your result.
Daily Maintenance Calories
This calculator estimates maintenance calories using BMR multiplied by an activity factor.
How to use the Calorie Calculator
Estimate daily maintenance calories by multiplying BMR by an activity level.
- Enter sex, age, weight and height.
- Choose typical activity level.
- Calculate BMR and maintenance calories.
Calorie Calculator formula
Maintenance calories = Mifflin-St Jeor BMR × activity multiplier.
Worked example
Inputs: Male, age 30, 70 kg, 175 cm and moderate activity.
What to expect: The tool reports estimated maintenance calories and the BMR used.
How to read your result
Activity levels are broad estimates; adjust with observed trends and professional guidance when needed.
Frequently asked questions
Is this a weight-loss prescription?
No. It estimates maintenance energy only.
Why can actual needs differ?
Body composition, activity, health and sleep change energy needs.