Math
Calorie Calculator
Enter height, weight, age and activity level — find out how many calories you burn.
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Fill in your details to calculate calories
What does Calorie Calculator?
The calorie calculator computes your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Harris-Benedict formula.
How to use Calorie Calculator?
- Select gender, enter age, height and weight.
- Select your physical activity level.
- Results show BMR, TDEE and three calorie targets: maintain, lose and gain weight.
Key features
- Harris-Benedict formula for BMR calculation
- Activity multiplier for full TDEE calculation
- Three targets: maintain, lose (−500 kcal) and gain (+500 kcal)
Frequently asked questions
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest. It represents the energy needed for vital functions only.
What is TDEE?
TDEE (Total Daily Energy Expenditure) is the total calories you burn per day, including physical activity. This is the number relevant for nutritional planning.
Is this tool free?
Yes, this tool is completely free and requires no registration.
Is my data saved?
No. All calculations happen in your browser only — no data is sent to any server.