Enter your age in years. BMR typically decreases with age due to changes in body composition.

Select your biological sex at birth. This affects BMR due to differences in muscle mass and hormones.

Enter your height in centimeters. Taller individuals generally have a higher BMR.

Enter your weight in kilograms. More body mass requires more energy to maintain, increasing BMR.

Choose your typical activity level. This helps estimate your total daily energy expenditure.