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Unit System

Gender

Age

Height (cm)

Weight (kg)

Activity Level

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Written by the EachTools Team

Last updated: January 2026

How Calorie Needs Are Calculated

Daily calorie needs are estimated using your Basal Metabolic Rate (BMR) multiplied by an activity factor. BMR is calculated using the Mifflin-St Jeor equation.

Formula

Men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 161
TDEE = BMR × Activity Factor

Steps

Select your gender.
Enter your age, height, and weight.
Choose your activity level from sedentary to very active.
View your estimated daily calorie needs for maintenance, weight loss, and weight gain.

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