Free Daily Calorie Calculator
Estimate how many calories you may need each day based on your age, sex, height, weight, and activity level with our free Daily Calorie Calculator.
Calculate Your Daily Calorie Needs
Enter your basic details and activity level to estimate your Basal Metabolic Rate (BMR) and approximate daily calories needed to maintain your current weight.
Enter your details above to calculate an estimate.
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What Is a Daily Calorie Calculator?
A Daily Calorie Calculator estimates how much energy your body may use each day based on factors such as age, sex, height, weight, and activity level. The result can provide a general estimate of the calories required to maintain your current weight.
Our calculator first estimates your Basal Metabolic Rate (BMR), which represents the energy your body uses at rest, and then applies an activity factor to estimate your total daily energy needs.
How to Use the Daily Calorie Calculator
- Choose Your Units – Select Metric for kilograms and centimeters or Imperial for pounds, feet, and inches.
- Enter Your Details – Enter your age, sex, current weight, and height.
- Select Your Activity Level – Choose the option that most closely reflects your typical daily activity and exercise.
- Calculate Your Calories – Click Calculate Calories to see your estimated BMR and daily calories for weight maintenance.
Why Use Our Daily Calorie Calculator?
- Daily Calorie Estimate – Estimate your approximate daily energy needs using your personal inputs and activity level.
- BMR Calculation – See an estimate of the calories your body uses at rest.
- Metric & Imperial Units – Use kilograms and centimeters or pounds, feet, and inches.
- Multiple Activity Levels – Choose an activity level that best represents your typical routine.
How Are Daily Calorie Needs Calculated?
For males:
BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
For females:
BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Estimated Daily Calories = BMR × Activity Factor
Important Information About Calorie Estimates
Daily calorie requirements vary from person to person, and calculator results are only estimates. Actual energy needs can be affected by body composition, genetics, daily movement, exercise intensity, pregnancy, breastfeeding, medical conditions, medications, and other factors.
This calculator is intended for general informational purposes and should not be treated as a personalized nutrition plan or medical recommendation. If you have specific health or nutrition needs, consider speaking with a qualified healthcare professional or registered dietitian.
Want another health-related calculation? Try our BMI Calculator to estimate Body Mass Index using your height and weight.
Frequently Asked Questions
What are maintenance calories?
Maintenance calories are an estimate of the daily energy intake that may maintain your current body weight when energy intake and expenditure are roughly balanced.
What is BMR?
Basal Metabolic Rate is an estimate of the energy your body uses at rest for basic functions such as breathing and circulation.
Why does activity level affect calorie needs?
Physical activity increases energy expenditure, so people with higher activity levels generally have higher estimated daily energy needs.
Is this calculator suitable for weight loss or weight gain planning?
The calculator primarily estimates maintenance energy needs. Individual weight-management goals can require additional considerations, so the result should not be treated as a personalized diet prescription.
Is the calorie result exact?
No. It is an estimate based on a mathematical equation and the information you enter. Actual calorie needs can vary.
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