Calorie Calculator

Calorie Calculator

What a calorie estimate means

A calorie calculator estimates daily energy needs from personal inputs such as age, sex, height, weight, and activity level. Many estimates are based on a basal metabolic rate formula, then multiplied by an activity factor.

The result is not a fixed truth. Sleep, training intensity, illness, body composition, medication, and tracking accuracy can change actual needs. Treat the number as a starting point and adjust based on real progress over several weeks.

Maintenance, loss, and gain

Maintenance calories aim to keep weight stable. A calorie deficit may support weight loss, while a surplus may support weight gain. Large changes can be hard to sustain and may not be appropriate for everyone.

Health note

This tool is for general planning. People with medical conditions, eating disorder history, pregnancy, or special dietary needs should ask a qualified professional before using calorie targets.