BMR (Basal Metabolic Rate) Calculator
Calculate how many calories your body burns at rest based on age, gender, height, and weight.
BMR Calculator – Calculate Your Basal Metabolic Rate Instantly
Your Basal Metabolic Rate (BMR) represents the number of calories your body needs to perform essential life-sustaining functions while at rest. These functions include breathing, digestion, cell repair, hormone production, and maintaining body temperature. Understanding your BMR is the foundation of every successful weight loss, muscle gain, or fitness plan.
Our BMR Calculator uses the highly trusted Mifflin-St Jeor Equation, considered the most accurate method for measuring your resting energy expenditure. With a few simple inputs—age, gender, height, and weight—you get an instant estimate of how many calories your body burns daily at rest.
⭐ What Is BMR (Basal Metabolic Rate)?
BMR measures the minimum energy your body requires to function when completely at rest.
It does not include calories burned through:
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Exercise
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Walking
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Working
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Daily activities
It is strictly the number of calories needed for survival functions.
⭐ Why BMR Is Important
Knowing your BMR helps you:
✔ Calculate calorie intake for weight loss
✔ Plan a muscle-gain diet
✔ Maintain your current weight strategically
✔ Build personalized nutrition plans
✔ Understand your metabolism better
✔ Determine your TDEE (Total Daily Energy Expenditure)
Understanding your metabolic needs leads to better decisions about food, fitness, and long-term health.
⭐ How the BMR Calculator Works
Our calculator uses two formulas based on gender:
For Men (Mifflin-St Jeor Equation)
For Women (Mifflin-St Jeor Equation)
⭐ Input Fields Used in the Calculator
✔ Gender
BMR differs significantly between males and females due to body composition.
✔ Weight (kg)
Higher body mass increases the caloric requirement.
✔ Height (cm)
Taller individuals generally burn more calories at rest.
✔ Age (years)
Metabolism slows down as age increases.
⭐ What the Calculator Shows You
When you enter your details, the tool instantly displays:
🔹 Your BMR (Calories per Day)
This is the number of calories your body needs at rest.
This number helps you build a customized calorie-intake plan depending on your goals:
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Weight loss: Eat below your TDEE
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Muscle gain: Eat above your TDEE
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Maintenance: Eat at your TDEE
(We can also build you a full TDEE Calculator if you want.)
⭐ Example BMR Calculation
For a 28-year-old male:
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Weight: 70 kg
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Height: 175 cm
BMR ≈ 1,682 calories/day
This means his body burns 1,682 calories each day even without movement.
⭐ Why This BMR Calculator Is Useful
✨ Most accurate & modern equation
✨ Simple and fast
✨ Helps plan diet and fitness goals
✨ Suitable for weight loss and bodybuilding
✨ Works for men and women
✨ Free and mobile-friendly
⭐ Difference Between BMR and TDEE
| Term | Meaning | Includes Activity? |
|---|---|---|
| BMR | Calories burned at rest | ❌ No |
| TDEE | Total daily calories burned | ✔ Yes |
If you'd like, I can create a TDEE Calculator that uses your BMR and activity level.
⭐ Conclusion: Understand Your Metabolism & Plan Better
Your BMR is the foundation of your calorie strategy. Whether you're trying to lose fat, gain muscle, or maintain a balanced lifestyle, knowing your basal metabolic rate empowers you to make smarter decisions.
Use the BMR Calculator to understand your metabolism and take the first step toward achieving your fitness goals.