Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Basal Metabolic Rate Calculator

Estimate the calories your body burns at complete rest using the Mifflin-St Jeor equation, then multiply by an activity factor to get Total Daily Energy Expenditure. Use the resulting kcal/day as a baseline for diet planning.

Weight (kg)

Height (cm)

Age (years)

Gender

Activity Level

Health

Calorie Deficit & Weight Loss Calculator

Estimate how much weight you'll lose over a set number of weeks from your daily calorie deficit and exercise. Based on the well-established rule that ~7,700 kcal equals roughly 1 kg of body fat.

Maintenance Calories (calories/day)

Target Daily Calories (calories/day)

Time Period (weeks)

Additional Exercise Calories Burned (calories/day)

Key differences

	Basal Metabolic Rate Calculator	Calorie Deficit & Weight Loss Calculator
Category	Medicine	Health
Inputs required	5	4
Result	Total Daily Energy Expenditure (calories/day)	Estimated Weight Loss (kg)
What it does	Estimate the calories your body burns at complete rest using the Mifflin-St Jeor equation, then multiply by an activity factor to get Total Daily Energy Expenditure. Use the resulting kcal/day as a baseline for diet planning.	Estimate how much weight you'll lose over a set number of weeks from your daily calorie deficit and exercise. Based on the well-established rule that ~7,700 kcal equals roughly 1 kg of body fat.