Basal Metabolic Rate Calculator – Find out how many calories you need at rest

With this tool, you can find out the exact number of calories your body consumes while at rest, based on your age, sex, weight, and height.
✅ Fast and accurate – Just enter your details and get the result instantly.
✅ Avoid errors – Automatic calculations without manual formulas or Excel sheets.
✅ Optimize your strategy – Identify your calorie base to define health or nutrition goals.
Use our calculator now and get results in seconds.

Example Calculation with the Basal Metabolic Rate Calculator

Imagine you want to know your BMR to plan your diet:
Age: 30 years
Sex: Female
Weight: 60 kg
Height: 165 cm
📐 Applied formula: BMR = 10×Weight + 6.25×Height − 5×Age − 161
📊 Result: 1,352.25 calories/day
This means your body needs approximately 1,352 calories a day just to function at rest.

📢 Optimize your health and energy with our calculator.

How Does Our Basal Metabolic Rate Calculator Work?

Our calculator follows a simple three-step process:

1️⃣ Data Entry
Age 📆 Allows you to adjust the formula based on your basal metabolism, which changes over time.
Weight ⚖️ It is a key factor in basal caloric estimation.
Height 📏 Directly affects energy requirements.
Sex 👤 A different value is applied in the formula depending on whether you are male or female.

Why is it important?
Your BMR represents your energy expenditure. Knowing it allows you to efficiently adjust your diet, training, or health plans.

2️⃣ Automatic Calculation
We use the Mifflin-St Jeor formula, one of the most reliable and validated:
📐 BMR = (10 × weight) + (6.25 × height) − (5 × age) + s
Where s = +5 for men and −161 for women.

The result indicates the calories your body needs at rest to function properly.

3️⃣ Results and Recommendations
🔹 If your goal is to lose weight, you can use your BMR as a starting point and reduce your calorie intake in moderation.
🔹 If you want to increase muscle mass, using your BMR and adding physical activity will give you a more targeted goal.

📢 Do you want to achieve your goals more efficiently? 🧐 Start by understanding your true metabolic base.

This tool is for you if you are an entrepreneur, business owner or freelancer.

Your daily energy depends directly on what you eat and how your body functions. This calculator is designed for those who need to perform at their best, make quick decisions, and take care of their health without complications.

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What is the Basal Metabolic Rate Calculator?

The Basal Metabolic Rate Calculator helps you determine how many calories your body burns at rest. This is key for designing meal plans, managing your weight, and improving your physical performance.
👉 Increase your nutritional control by making decisions based on accurate data.

Improve your metabolic planning with these recommended books

These books will give you practical tools to better understand your metabolism, improve your diet, and achieve your health goals.

1️⃣ The Power of Metabolism – Frank Suárez
Understand how your metabolism works and learn how to manage it to lose weight and gain energy.
2️⃣ Eat, Train, Win – James Duigan
A clear guide to combining diet, rest, and exercise based on your basal metabolism.
3️⃣ Your Body in Balance – Neal D. Barnard
Discover how food influences your hormones and metabolism to achieve lasting changes.

Why Use Our Basal Metabolic Rate Calculator?

✅ Speed – Get results in seconds without manual calculations.
✅ Accuracy – Scientifically validated and gender-adapted formulas.
✅ Ease – Just enter your details and get your results instantly.
✅ Practical Application – Useful for nutrition, fitness, overall health, and weight management.

Avoid These Common Mistakes When Using the Basal Metabolic Rate Calculator

🚫 Confusing weight in pounds with kilos – Make sure you enter the weight in kilograms.
🚫 Using height in inches instead of centimeters – This completely changes the calculation.
🚫 Not taking gender into account – The s value of the formula changes and affects the result.

Use our calculator correctly and get results that truly fit your body.

Comparison: Basal Metabolic Rate Calculator vs. Traditional Methods

✅ Fast and accurate – No need for books, spreadsheets, or complex calculations.
✅ Avoid human errors – The automated formula eliminates common mistakes.
✅ Easy to use – Suitable for all audiences without prior knowledge.
✅ Accessible and free – Available online from any device.

Use the best tool to improve your nutrition and physical performance.

Frequently Asked Questions about the Basal Metabolic Rate Calculator

How to calculate Basal Metabolic Rate easily?
Just enter your age, sex, weight, and height into our tool. The calculation is automatic and takes seconds.

What is the TMB Calculator for?
It tells you how many calories your body needs at rest, ideal for planning diets and workouts.

What is the formula for the TMB?
📐 BMR = (10 × weight) + (6.25 × height) − (5 × age) + s
s = +5 for men and −161 for women.

Practical example of TMB
📊 Female, 60 kg, 165 cm, 30 years old → BMR: 1,352 calories/day.
This represents the calories needed just to maintain vital functions.

Does BMR change with age?
Yes, as we age, our metabolism slows down and we need less energy at rest.

Can I use BMR to lose weight?
Yes, it is the basis for calculating your calorie requirements and creating a deficit to lose fat.

Is it the same as total daily calories?
No, BMR is only your resting energy expenditure. You must add physical activity to get your total energy expenditure (TDEE).

Is it valid for people with illnesses?
Yes, but in these cases it is recommended that the result be accompanied by a medical evaluation.

Should I recalculate it if I change my weight?
Yes. When you change your weight or height, your BMR also changes and must be updated.

Does it help if I don't exercise?
Yes, even at rest, the body consumes energy. This tool shows that baseline expenditure.