Calorie & BMR Calculator

Estimate your Basal Metabolic Rate and daily caloric needs using Mifflin-St Jeor.

Daily Caloric Targets

Basal Metabolic Rate (BMR) 1,662 kcal
Maintenance Calories 1,994 kcal
Weight Loss (Mild - 0.25kg/week) 1,744 kcal
Weight Loss (Standard - 0.5kg/week) 1,494 kcal
Weight Gain (Standard) 2,494 kcal

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Understanding Basal Metabolic Rate (BMR) and Daily Calorie Targets

Basal Metabolic Rate (BMR) represents the number of calories your body needs to maintain basic life-sustaining functions (like breathing, blood circulation, and cell production) while at complete rest. Understanding your BMR is essential for planning effective weight management strategies.

Calculating BMR Using the Harris-Benedict Formula

Our calculator utilizes the revised Harris-Benedict equation to estimate BMR:

  • Men: BMR = 88.362 + (13.397 * weight in kg) + (4.799 * height in cm) - (5.677 * age in years)
  • Women: BMR = 447.593 + (9.247 * weight in kg) + (3.098 * height in cm) - (4.330 * age in years)

Total Daily Energy Expenditure (TDEE)

To determine your actual daily calorie needs, your BMR is multiplied by an activity multiplier (ranging from sedentary to extra active). This calculates your **TDEE** (Total Daily Energy Expenditure):

  • Weight Maintenance: Eat calories equal to your TDEE.
  • Weight Loss: Consume calories below your TDEE (typically a 500-calorie deficit).
  • Weight Gain: Consume calories above your TDEE (typically a 300 to 500-calorie surplus).

Contextual Health Screening Tools

For a quick assessment of your general weight category based on height-to-weight ratios, check out our BMI Calculator.

Frequently Asked Questions

What is the difference between BMR and TDEE?
BMR is the energy your body burns at rest to survive. TDEE is the total energy you burn daily, including your BMR plus physical activity and exercise.
How does a calorie deficit lead to weight loss?
When you consume fewer calories than your TDEE, your body is forced to burn stored fat for energy, leading to weight loss over time.