Calorie Calculator
Calculate daily calorie needs based on age, gender, weight, height, and activity level
About This Calculator
The Calorie Calculator estimates your daily calorie needs using the Mifflin-St Jeor Equation to calculate BMR (Basal Metabolic Rate) and adjusts for activity level. This helps you understand how many calories you need to maintain your current weight.
How It Works
- 1
Enter your age in years.
- 2
Select your gender (male or female).
- 3
Input your weight in kilograms.
- 4
Enter your height in centimeters.
- 5
Select your activity level based on your exercise routine.
- 6
The calculator computes your BMR and daily calorie needs.
Formula Explanation
BMR (Male) = 10 × Weight(kg) + 6.25 × Height(cm) - 5 × Age + 5The Mifflin-St Jeor Equation for men calculates Basal Metabolic Rate, the calories burned at rest.
BMR (Female) = 10 × Weight(kg) + 6.25 × Height(cm) - 5 × Age - 161The Mifflin-St Jeor Equation for women accounts for typically lower metabolic rates.
Daily Calorie Needs = BMR × Activity MultiplierMultiply BMR by an activity multiplier (1.2 for sedentary to 1.9 for very active) to estimate total daily calorie needs.
Tips
BMR represents calories burned at complete rest - your body's minimum energy needs.
Activity multipliers: Sedentary (1.2), Light (1.375), Moderate (1.55), Active (1.725), Very Active (1.9).
To lose weight, consume fewer calories than your daily needs.
To gain weight, consume more calories than your daily needs.
These are estimates - individual metabolism varies.