What Calorie Calculator 24 does
Calorie Calculator 24 estimates a daily calorie target for weight loss from your age, sex, height, weight, activity level and selected weight-loss pace. It also shows estimated maintenance calories, the daily calorie deficit and expected weekly progress.
How the estimate is calculated
The calculator first estimates basal metabolic rate (BMR) using the Mifflin–St Jeor formula. It then applies the activity multiplier you select to estimate total daily energy expenditure (TDEE), often called maintenance calories.
Your selected weight-loss pace is converted into an estimated daily calorie deficit. The current calculator uses approximate energy equivalents of 7,700 kcal per kilogram and 3,500 kcal per pound for those deficit estimates.
Built-in target limits
The calculator currently applies minimum displayed calorie targets of 1,200 kcal/day for the female option and 1,500 kcal/day for the male option. These are calculator guardrails, not individualized medical recommendations.
Accuracy and limitations
No formula can know your exact daily energy expenditure from a few inputs. Muscle mass, body composition, daily movement, sleep, stress, training, health conditions and other factors can all affect real calorie needs.
The activity multipliers and projected weight-loss rates are estimates. Real changes in body weight do not always follow a perfectly linear calorie-to-weight relationship.
Health disclaimer
Calorie Calculator 24 is provided for general informational purposes and is not medical advice, diagnosis or treatment. If you are pregnant, have a medical condition, are under medical supervision, or have a history of disordered eating, an individualized plan from a qualified health professional may be more appropriate.
Privacy
The calorie calculation runs directly in your browser and does not require an account. The calculator itself does not submit the age, sex, height, weight, activity level or goal values to our server.
For information about analytics, advertising, server logs and browser technologies used elsewhere on the page, see our Privacy Policy.