Calorie Calculator

What your calorie estimate means

Your basal metabolic rate (BMR) is the approximate energy your body uses at rest. Maintenance calories, also called total daily energy expenditure, add movement and activity to that baseline. A goal range is intentionally approximate rather than a prescription.

• Use the estimate as a starting point, not a fixed rule.
• Look at trends over several weeks instead of one day's scale reading.
• Sleep, stress, health, and changes in activity can all affect energy needs.

How the calorie calculator works

The calculator uses the Mifflin-St Jeor equation for BMR and multiplies it by an activity factor. The goal estimate applies a modest adjustment to maintenance calories so the result stays practical and avoids implying that a single number is exact.