Free tool
Free Calorie Calculator
Calculate your daily calorie needs using the Mifflin-St Jeor equation. Get maintenance, fat loss, and muscle gain targets.
Enter your details
Maintenance Calories
calories/day to maintain weight
Fat Loss
-500 cal/day deficit
Muscle Gain
+300 cal/day surplus
Get AI-generated diet plans
Flexync creates personalized diet plans based on your calorie targets, dietary preferences, and fitness goals. Powered by AI.