BMR Calculator: Find Your Basal Metabolic Rate (Mifflin-St Jeor)

Your Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions like breathing, circulation, and cell production while at complete rest. Knowing your BMR is the foundation for any calorie-based diet plan.

How to Use BMR Calculator

• 1.

  Enter your age, weight, and height

• 2.

  Select your gender

• 3.

  View your BMR in calories per day

• 4.

  Multiply by activity factor for total daily needs

Key Features

• Uses the accurate Mifflin-St Jeor equation
• Separate formulas for male and female
• Shows BMR and suggested activity multipliers
• Helps set calorie deficit/surplus targets

When to Use This Tool

• •

  Starting a weight loss plan

• •

  Understanding your baseline calorie needs

• •

  Calculating macros for fitness goals

• •

  Comparing metabolism at different ages

Frequently Asked Questions