Calorie Calculator
Estimate your daily calorie needs and basal metabolic rate based on age, weight, height, gender, and physical activity level.
Run tool
This online calorie calculator provides an estimate of your daily energy needs based on your personal metrics and routine. The tool computes two key figures: your basal metabolic rate, representing the baseline energy required at rest, and your total daily energy expenditure, which accounts for physical movement throughout the day. You can customize age, weight, height, gender selection, and activity level to match your profile. If fields are left blank, standard default values apply automatically, setting age to 30, weight to 70, height to 175, gender to male, and activity to moderate. Supported activity settings include sedentary, light, moderate, active, and very active, with any unrecognized activity input falling back to the moderate multiplier. Both resulting estimates are rounded to whole numbers for straightforward meal planning and energy tracking. These calculated values serve as informational guidelines for dietary planning rather than formal clinical advice.
Instructions
- Enter your age as a whole number.
- Enter your weight and height values into the corresponding fields.
- Select your gender from the available options.
- Choose an activity level from sedentary to very active.
- Click the calculate button to view your estimated basal metabolic rate and total daily calorie requirements.
Examples
- Calculate daily maintenance calories for a 30-year-old male weighing 70 at 175 height with moderate activity.
- Estimate resting metabolic rate and total energy needs for a 25-year-old female weighing 60 at 165 height with light activity.
FAQ
What is the difference between basal metabolic rate and total daily energy expenditure?
Basal metabolic rate is the baseline energy your body expends at rest to keep vital organs functioning. Total daily energy expenditure multiplies this baseline by an activity factor to estimate the calories needed to sustain your overall daily routine.
What default values are used if an input is left blank?
When inputs are omitted, the calculator automatically defaults to an age of 30, a weight of 70, a height of 175, male gender, and a moderate activity setting.
Which activity levels does the calculator recognize?
The calculator recognizes sedentary, light, moderate, active, and very active levels. Supplying an unrecognized option uses the moderate activity factor by default.
Are the final energy estimates rounded?
Yes. Both the basal metabolic rate and the total daily energy expenditure values are rounded to whole numbers.