Calculated according to age, height, weight, and activity: boys and girls need calories and basal metabolism for a day, helping to lose weight.

Gender :
Workload :
Stress :
Height :
Weight :
Age :

Will show your daily calorie requirements here

(Recommendation for weight loss reference: basal metabolism < calories eaten in a day < daily needs)
The calorie intake in one day should not be lower than the basal metabolism & the calorie intake in one day does not exceed the "daily needs"