Maintenance calories: what they are and how to estimate them
Estimate the calories that may maintain your current weight, then refine the result using real-world trends.
Maintenance calories are the average energy intake at which your body weight tends to remain stable. They are closely related to total daily energy expenditure, or TDEE: the energy used for basic functions, digestion, everyday movement and planned exercise.
A practical estimate is:
TDEE = estimated resting energy expenditure x activity factorSuppose your estimated TDEE is 2,140 kcal/day. Treat that figure as a starting hypothesis, not a daily prescription. Eat near it consistently for two or three weeks and compare weekly average weights under similar conditions.
If the average is rising, your true maintenance may be somewhat lower; if it is falling, it may be higher. Make small adjustments and observe another full trend. Daily weight can move because of water, sodium, carbohydrate intake, digestion and menstrual-cycle changes even when energy balance is stable.
Maintenance also changes as body weight, training, step count, work routine or health changes. Recalculate when those inputs shift meaningfully.
Use the TDEE calculator to establish a sensible starting point. People who are pregnant, under 18, recovering from illness or managing an eating disorder or medical condition should seek individualized nutrition guidance.