BMR Calculator
Calculate your Basal Metabolic Rate, the number of calories your body needs at rest.
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Understand Your Body's Resting Calorie Burn
Our Basal Metabolic Rate (BMR) Calculator estimates the number of calories your body needs to function at rest, providing a baseline for your total daily energy needs.
What is a BMR Calculator?
A Basal Metabolic Rate (BMR) Calculator is a tool that estimates the minimum number of calories your body requires to perform its most basic, life-sustaining functions over a 24-hour period. This includes processes like breathing, circulating blood, controlling body temperature, and cell production. Your BMR is the largest component of your total daily calorie expenditure and is a crucial starting point for creating a personalized diet and fitness plan.
How It Works: Common BMR Formulas
The calculator uses several widely accepted formulas to estimate your BMR:
Mifflin-St Jeor: BMR = (10 × W) + (6.25 × H) - (5 × A) + S
Harris-Benedict: BMR = (13.397 × W) + (4.799 × H) - (5.677 × A) + 88.362
Where W is weight in kg, H is height in cm, A is age, and S is +5 for males or -161 for females.
Frequently Asked Questions
How is Basal Metabolic Rate (BMR) calculated?
BMR is calculated using formulas that consider your age, gender, height, and weight. The most widely used formulas are the Mifflin-St Jeor and Revised Harris-Benedict equations. Our calculator allows you to use these common methods to estimate your BMR.
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest. TDEE (Total Daily Energy Expenditure) is your BMR plus the calories you burn through physical activity. TDEE represents your total daily 'maintenance' calories.
Why is my BMR important?
Knowing your BMR is the first step in determining your daily calorie needs. It provides a baseline that you can use, along with your activity level, to set accurate calorie targets for weight loss, maintenance, or muscle gain.
How can I increase my BMR?
The most effective way to increase your BMR is by building more muscle mass. Muscle tissue is more metabolically active than fat tissue, meaning it burns more calories at rest. Regular strength training is key to boosting your BMR.
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