Calorie Calculator
Free Online Calorie Calculator
Our calorie calculator uses the Mifflin-St Jeor equation, one of the most accurate formulas for estimating Basal Metabolic Rate (BMR). By factoring in your age, gender, weight, height, and activity level, it calculates your Total Daily Energy Expenditure (TDEE) and provides personalized daily calorie targets for weight loss, maintenance, or weight gain.
How to Use
Select your gender, then enter your age, weight, and height. Choose between metric (kg/cm) and imperial (lbs/ft-in) units using the toggle buttons. Select your activity level from the dropdown menu, then click "Calculate" to see your BMR, TDEE, and recommended daily calorie intake for different weight goals.
FAQ
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body burns at rest to maintain basic life-sustaining functions like breathing, circulation, and cell production. It represents the minimum amount of energy your body needs to function while at complete rest.
What is TDEE?
Total Daily Energy Expenditure (TDEE) is the total number of calories you burn per day, including all physical activity. It is calculated by multiplying your BMR by an activity factor. TDEE is the most useful number for planning your diet because it represents your actual daily energy needs.
What is the Mifflin-St Jeor equation?
The Mifflin-St Jeor equation is a formula developed in 1990 that is considered one of the most accurate methods for calculating BMR. For men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 5. For women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 161.
How many calories should I eat to lose weight?
To lose weight at a safe rate of about 0.5 kg (1 lb) per week, you need a daily calorie deficit of approximately 500 calories below your TDEE. For faster weight loss of 1 kg (2 lbs) per week, a deficit of 1,000 calories is needed. It is generally not recommended to eat fewer than 1,200 calories per day for women or 1,500 for men without medical supervision.
How accurate is this calculator?
The Mifflin-St Jeor equation has been shown to be accurate within about 10% for most individuals. However, individual results may vary based on factors such as muscle mass, genetics, hormonal conditions, and medications. Use the results as a starting point and adjust based on your actual results over time.