What is the BMR Calculator?

The BMR (Basal Metabolic Rate) Calculator is a free, intuitive online tool that helps you estimate the number of calories your body burns at rest to maintain vital functions like breathing, digestion, and cell repair. Based on the scientifically recognized Mifflin-St Jeor Equation, this tool calculates your daily energy requirement and provides personalized calorie recommendations for weight maintenance, loss, or gain.

How Does the BMR Calculator Work?

After you input your age, gender, weight, and height, the calculator uses the Mifflin-St Jeor formula to determine your BMR. It then applies an activity multiplier to estimate your maintenance calories and gives clear guidance on how many calories you’d need to lose or gain weight. It supports height in feet/inches and weight in kilograms.

Step-by-Step BMR Calculation

1. Enter Your Personal Details
   • Gender
   • Age (in years)
   • Weight (in kilograms)
   • Height (in feet and inches)
2. Calculation Process
   • Height is converted into centimeters for the formula.
   • The Mifflin-St Jeor equation is applied based on gender.
   • Outputs include your BMR and estimated calorie needs to maintain, lose, or gain weight.
   • Helpful tips are provided based on your BMR level.

BMR Formula Used

• For Men: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) + 5
• For Women: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) − 161

Features of Our BMR Calculator

• Accurate BMR calculation using Mifflin-St Jeor Equation
• Supports height in feet and inches
• Outputs maintenance, weight loss, and weight gain calorie levels
• Provides health tips based on your BMR
• Easy to edit or reset entries
• Downloadable PDF report with your results

Why Use This BMR Calculator?

• Helps you understand how many calories your body needs at rest
• Great tool for planning diets and fitness goals
• Useful for nutrition tracking and weight management
• No signup required and 100% free to use

Whether you're starting a fitness journey, adjusting your diet, or simply curious about your metabolism, our BMR Calculator gives you clear and actionable insights to support a healthier lifestyle.