Calorie Calculator
Free calorie calculator using the Mifflin-St Jeor and Harris-Benedict equations. Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) based on age, gender, height, weight, and activity level. Get personalized calorie targets for weight loss, maintenance, or gain with macro breakdowns.
This calculator provides estimates based on mathematical formulas (Mifflin-St Jeor and Harris-Benedict equations). Results are approximations and may not be accurate for all individuals.
This is not medical advice. Calorie needs vary significantly based on genetics, body composition, medical conditions, medications, and other factors. Always consult a healthcare professional, registered dietitian, or nutritionist before making significant changes to your diet.
A minimum of 1,200 kcal/day is enforced for all goals. Very low calorie diets should only be followed under medical supervision.
How to Use Calorie Calculator
- 1Enter your age, gender, height, weight, and activity level.
- 2View your BMR and TDEE calculations.
- 3Select a goal (lose, maintain, or gain weight).
- 4See recommended daily calories and macro breakdown.
Frequently Asked Questions
What is BMR?▾
Basal Metabolic Rate (BMR) is the number of calories your body burns at rest to maintain basic life functions like breathing, circulation, and cell production.
What is TDEE?▾
Total Daily Energy Expenditure (TDEE) is your BMR multiplied by an activity factor. It represents the total calories you burn in a day including exercise and daily activities.
How many calories should I eat to lose weight?▾
A moderate calorie deficit of 500 calories below your TDEE leads to approximately 0.5 kg (1 lb) of weight loss per week. Extreme deficits are not recommended.
What are macros?▾
Macronutrients (macros) are protein, carbohydrates, and fat. A balanced diet typically includes 25-35% protein, 45-55% carbs, and 20-30% fat of total calories.
About Calorie Calculator
Free calorie calculator using the Mifflin-St Jeor and Harris-Benedict equations. Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) based on age, gender, height, weight, and activity level. Get personalized calorie targets for weight loss, maintenance, or gain with macro breakdowns.
NexTool's Calorie Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.
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