TDEE calculator — for one of you, or both
Estimate how many kcal each of you burns in a day. Fill in one column or two — the math runs per person, because two bodies never share one number.
About this calculator
Basal metabolic rate is estimated with the Mifflin-St Jeor equation, the standard clinical formula for resting energy in kcal. Your total daily energy expenditure is that BMR multiplied by an activity factor between 1.2 and 1.725 that covers ordinary daily movement.
Two limits worth knowing. First, equations infer from averages — they cannot see your genetics, your history or your hormones. Second, a static estimate ages badly: expenditure drifts as weight, activity and adherence change. Treat the number as a starting point for the first two weeks, not a verdict.
This tool runs entirely in your browser — nothing you type here is sent to any server or stored anywhere. It is informational only and not medical advice; see the health disclaimer.