Free BMR Calculator

BMR calculator calculates your basal metabolic rate the number of calories required to keep your body functioning.

Calculate Your BMR

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0 Calories/day

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Quick Answer: What Is Your BMR?

Your BMR is the calories your body burns at complete rest, before any activity. This tool uses the Mifflin-St Jeor formula, with height in centimetres, weight in kilograms and age from 10 to 100. Worked example: a man aged 30, 175 cm tall and 70 kg has a BMR of 10 x 70 + 6.25 x 175 - 5 x 30 + 5 = 1,648.75 calories per day. The same woman has 1,482.75 calories per day. The tool shows your BMR only. To get daily calories, multiply your BMR by your activity level: sedentary x 1.2 = 1,979, lightly active x 1.375 = 2,267, moderately active x 1.55 = 2,556 and very active x 1.725 = 2,844 for the worked example above. A BMR result is an estimate, not medical advice. Check your BMI calculator result beside it before you plan calories.

How to Use the BMR Calculator

Calculating your Basal Metabolic Rate (BMR) with BotixTech.com's free online tool is a simple and straightforward process:

Enter your age, gender, height, and weight in the respective fields.

Click the "Calculate BMR" button.

Your personalized BMR value will be displayed instantly, along with an explanation of what BMR represents.

Understanding Your BMR

Your Basal Metabolic Rate (BMR) is the minimum number of calories your body needs to perform essential functions like breathing, circulation, and maintaining body temperature when at rest. Knowing your BMR is crucial for understanding your daily calorie needs and setting appropriate goals for weight management or fitness.

Key Features

Accurate BMR Calculation: Our BMR Calculator uses proven scientific formulas to provide accurate BMR values based on your age, gender, height, and weight.

User-Friendly Interface: The calculator's simple and intuitive interface ensures a seamless experience for users of all skill levels.

Instant Results: Get your personalized BMR value instantly, without any delays or complicated calculations.

BMR Explanation: Understand the significance of BMR and how it relates to your daily calorie needs with our clear and concise explanations.

Policy and Terms of Use

The BMR Calculator on BotixTech.com is completely free to use, with no hidden costs or subscriptions required.

By using this tool, you agree to our Terms of Service and Privacy Policy.

The tool is intended for informational and educational purposes only and should not be used as a substitute for professional medical advice.

BotixTech.com reserves the right to modify, suspend, or discontinue the BMR Calculator tool at any time without prior notice.

Why Choose BotixTech.com's BMR Calculator?

BotixTech.com's BMR Calculator is a reliable and user-friendly tool designed to help you understand your daily calorie needs for effective weight management and fitness goals. Whether you're looking to lose weight, gain muscle, or maintain a healthy lifestyle, knowing your BMR is a crucial first step.

With its accurate calculations, simple interface, and instant results, our free online BMR Calculator provides a convenient and hassle-free way to determine your Basal Metabolic Rate. Start using it today and take control of your calorie intake for a healthier and more informed approach to your fitness journey.

BMR Calculator FAQs

This calculator uses the Mifflin-St Jeor equation, the most widely accepted formula: for men, BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5; for women, BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161.

BMR is the calories your body burns at complete rest. TDEE (Total Daily Energy Expenditure) adds your activity level on top of BMR. To maintain weight, eat near your TDEE; to lose weight, eat below it.

The Mifflin-St Jeor formula is accurate within about 10% for most people. Muscle mass, medical conditions, and other factors can shift your true BMR, so treat the result as a reliable starting estimate.

Recalculate whenever your weight, age bracket, or activity level changes meaningfully - roughly every few months while actively managing your diet or training.