BMR Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation
📖 How to Use
- Select your gender
- Enter your age
- Enter your height in cm
- Enter your weight in kg
- Click Calculate
- View your BMR and TDEE for each activity level
✨ Features
- ✓Uses Mifflin-St Jeor equation (most accurate BMR formula)
- ✓Accurate calculation based on gender, age, height, and weight
- ✓TDEE calculation for 5 activity levels
- ✓Weight management guide included
📐 Formula
Male: (10 × weight kg) + (6.25 × height cm) - (5 × age) + 5
Female: (10 × weight kg) + (6.25 × height cm) - (5 × age) - 161💡 How It Works
- •BMR (Basal Metabolic Rate) is the minimum energy required to sustain life functions.
- •It includes calories burned for heartbeat, breathing, body temperature regulation, and other basic bodily functions.
- •The Mifflin-St Jeor equation, published in 1990, is considered the most accurate BMR calculation method.
- •TDEE (Total Daily Energy Expenditure) is BMR multiplied by an activity factor, representing total daily calorie burn.
- •To lose weight, consume less than TDEE; to gain weight, consume more than TDEE.
- •A safe rate of weight change is about 0.5-1kg per week (500-1000kcal deficit/surplus per day).
❓ FAQ
Q. What's the difference between BMR and TDEE?
A. BMR is the calories burned at complete rest for basic life functions. TDEE includes daily activities and exercise. TDEE = BMR × activity factor.
Q. Why use the Mifflin-St Jeor equation?
A. Published in 1990, this equation was developed for modern body compositions and has been shown in multiple studies to be more accurate than older formulas like Harris-Benedict.
Q. Will I gain weight if I eat more than my TDEE?
A. Yes, excess calories are stored as body fat. Approximately 7,700kcal surplus leads to 1kg of weight gain.
Q. Does more muscle mean higher BMR?
A. Yes, muscle burns more energy than fat. With the same weight, more muscle mass means higher BMR. However, this calculator doesn't account for body composition.
Q. Does BMR decrease with age?
A. Yes, BMR decreases with age due to muscle loss and slower metabolism. That's why the formula subtracts 5 × age.