The BMR calculator estimates the number of calories your body needs at rest to maintain basic functions.

This tool uses the Mifflin-St Jeor equation, which is more accurate and recommended.

Free BMR Calculator – Know How Many Calories You Need

If you’ve ever asked yourself, “How many calories should I eat a day?” — you’re not alone. Whether your goal is to lose weight, build muscle, or maintain your current weight, knowing your BMR (Basal Metabolic Rate) is the perfect place to start.

That’s why we built this powerful and easy-to-use BMR Calculator — to help you take control of your fitness and nutrition with accurate data.

What is BMR?

Your Basal Metabolic Rate (BMR) is the number of calories your body burns at rest to maintain basic functions like breathing, circulation, and cell production. In simple terms, it’s how many calories you’d burn if you stayed in bed all day doing absolutely nothing.

Knowing your BMR helps you make smarter decisions about your diet, training, and overall lifestyle.

Why Use a BMR Calculator?

Using a BMR Calculator helps you:

• Understand your calorie baseline before making diet changes
• Set realistic goals for weight loss, maintenance, or muscle gain
• Avoid under-eating or overeating by knowing your actual needs
• Customize your fitness routine based on science, not guesswork

Whether you’re an athlete, a busy professional, or just starting your health journey, knowing your BMR is key to long-term success.

How Our BMR Calculator Works

The BMR Calculator uses the scientifically-backed Mifflin-St Jeor equation, which takes into account your:

• Age
• Gender
• Weight
• Height

It instantly calculates your daily BMR and also provides your TDEE (Total Daily Energy Expenditure) based on your activity level.

👉 Try it now: BMR calculator

BMR vs TDEE – What’s the Difference?

• BMR = Calories your body needs at rest
• TDEE = Calories your body needs based on your lifestyle and activity level

Is This BMR Calculator Free?

Yes! Our BMR Calculator is 100% free to use. No sign-up required, no email needed. Just fast, accurate results when you need them.

Why Use BMR Calculator?

• Instant results
• Mobile-friendly
• No popups or distractions
• Accurate calculations
• Built for all genders and ages

If you’re serious about your health and want real results, our free BMR calculator is the first step toward taking control of your body and energy.

Start today and calculate your BMR instantly at 👉 bmr calculator