The calorie calculator combines age, gender, height, weight, and activity level in a fixed energy-estimation model. It returns an estimated basal metabolic rate (BMR), total daily energy expenditure (TDEE), and reference calories for maintenance, fat loss, and weight gain. The useful question is “What number can I start with and observe?” rather than “What must I eat exactly every day?”
The page does not read body-fat percentage, muscle mass, pregnancy or breastfeeding status, illness, medication, eating-disorder history, food logs, or wearable data. It does not provide a meal plan, macro prescription, target date, or medical treatment. Treat the result as an adult nutrition-planning starting point.
Do not use this page alone to set calories for a child or adolescent, pregnancy or breastfeeding, a chronic condition, medication that affects appetite or metabolism, an eating disorder, or unexplained weight change.
Age enters the BMR equation. The control accepts 0–120 years; that is a UI range, not a claim that the adult equations are appropriate for every age.
BMR is an estimated resting-energy baseline, TDEE is BMR multiplied by the selected activity factor, and the page subtracts or adds 500 kcal to create reference targets.
The current component uses the original Harris–Benedict equations with separate male and female coefficients; height is in centimeters and weight is in kilograms.
Choose the level closest to your real routine rather than an ideal plan; steps, work, training, recovery, and tracking error can all shift actual expenditure.
Do not rely on this page alone in those situations. It does not model them, so ask a clinician or registered dietitian for individualized guidance.
Estimate BMR, TDEE, and maintenance/weight-loss/weight-gain reference calories from age, sex, height, weight, and activity; an adult planning start, not individualized nutrition advice.