BMR Calculator
Calculate your Basal Metabolic Rate (BMR) using Metric or US units and understand how many calories your body burns at rest.
What is BMR (Basal Metabolic Rate)?
Basal Metabolic Rate (BMR) refers to the number of calories your body requires to maintain essential functions such as breathing, circulation, and cell production while at complete rest. Knowing your BMR can help you plan a better diet, fitness routine, and weight management strategy.
Why Use a BMR Calculator?
Our BMR Calculator helps you estimate how many calories your body burns at rest. Whether you're looking to lose weight, gain muscle, or maintain your current physique, knowing your BMR is the first step in customizing your nutrition and fitness plan.
BMR Formula for Men and Women
We use the widely accepted Mifflin-St Jeor Equation for calculating BMR:
- For men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(y) + 5
- For women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(y) − 161
For US units, the formula is slightly adjusted to accommodate pounds and inches:
- For men: BMR = 66 + (6.23 × weight in lbs) + (12.7 × height in inches) − (6.8 × age)
- For women: BMR = 655 + (4.35 × weight in lbs) + (4.7 × height in inches) − (4.7 × age)
What is TDEE?
TDEE (Total Daily Energy Expenditure) is the number of calories you burn per day when physical activity is taken into account. It's calculated by multiplying your BMR by an activity factor based on your lifestyle and workout habits.
Activity Levels Explained
- Sedentary: Little or no physical activity.
- Lightly active: Light exercise or sports 1–3 days a week.
- Moderately active: Moderate exercise 3–5 days a week.
- Very active: Hard exercise 6–7 days a week.
- Extra active: Very hard exercise or a physically demanding job.