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Activity Level*

What is a Calorie Calculator?

A calorie calculator estimates the number of calories you need per day based on your BMR (Basal Metabolic Rate) and activity level. BMR is the energy your body needs at rest.

BMR Formulas

Mifflin-St JeorMost accurate for most people
Revised Harris-BenedictClassic formula, slightly less accurate
Katch-McArdleBest if you know your body fat %

Activity Levels

Sedentary (little or no exercise)
Light (exercise 1-3 times/week)
Moderate (exercise 4-5 times/week)
Active (daily exercise or intense 3-4 times/week)
Very Active (intense exercise 6-7 times/week)