🔥 BMR Calculator - Basal Metabolic Rate

Calculate your BMR instantly. Know your daily calorie needs for weight loss, maintenance, or muscle gain. Most accurate Mifflin-St Jeor formula.

👤 Gender

👨 Male

👩 Female

📅 Age (years)

Between 15-100 years

📏 Height (cm)

Between 100-250 cm

⚖️ Weight (kg)

Between 30-300 kg

💡 What is BMR? BMR (Basal Metabolic Rate) is the number of calories your body burns while at complete rest. It represents the minimum energy needed to keep your body functioning. This calculator uses the Mifflin-St Jeor formula, considered the most accurate by the Academy of Nutrition and Dietetics.

🔥 BMR CALCULATOR - Complete Guide

What is Basal Metabolic Rate (BMR)?

BMR (Basal Metabolic Rate) is the number of calories your body burns while at complete rest to maintain basic functions like breathing, circulation, controlling body temperature, and cell growth. BMR accounts for 60-75% of your total daily calorie burn!

How BMR is Calculated (Mifflin-St Jeor Formula)

Men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5
Women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161

Activity Levels (TDEE - Total Daily Energy Expenditure)

🛋️ Sedentary (little/no exercise): BMR × 1.2
🚶 Light Activity (1-3 days/week): BMR × 1.375
🏃 Moderate Activity (3-5 days/week): BMR × 1.55
💪 Heavy Activity (6-7 days/week): BMR × 1.725
🏆 Athlete (twice daily training): BMR × 1.9

Why BMR Matters for Your Health

Knowing your BMR helps you set accurate weight loss goals, plan muscle gain strategies, maintain healthy weight, and create effective meal plans.

❓ People Also Ask About BMR Calculator

What is BMR and why is it important? ▼

BMR (Basal Metabolic Rate) is the number of calories your body burns at rest. It's important because it represents the minimum energy needed for vital functions like breathing, circulation, and cell production. Knowing your BMR helps you determine your daily calorie needs for weight loss, maintenance, or muscle gain.

How accurate is this BMR calculator? ▼

This calculator uses the Mifflin-St Jeor formula, which is considered the most accurate BMR formula by the Academy of Nutrition and Dietetics. It provides results within ±10% of actual BMR for most individuals.

What's the difference between BMR and TDEE? ▼

BMR is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through physical activity. TDEE = BMR × Activity Factor. Use TDEE to plan your actual daily calorie intake.

Is this BMR calculator free? ▼

Yes! This BMR calculator is completely free with no registration required. Use it unlimited times. No hidden charges, no signup needed.

Which BMR formula is most accurate for women? ▼

The Mifflin-St Jeor formula is most accurate for both men and women. For women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161.

Can I use BMR calculator for weight loss? ▼

Yes! To lose weight, eat 300-500 calories less than your TDEE (not BMR). This calculator shows you calorie recommendations for weight loss, maintenance, and muscle gain.