Calories & Weight Loss

Aim for 400–600 kcal/day in weeks 1–2, 600–800 by weeks 3–8, then roughly 1,000–1,500 kcal/day long term, as set by your bariatric team.

Daily calorie burn varies by sex, age, size, and movement; estimate your TDEE by multiplying BMR with an activity factor and adding workouts.

Keto calories match your goal: ~20% below maintenance to lose, at maintenance to hold, or +10–20% to gain—while keeping net carbs low.

On keto, most adults target 1,200–2,200 calories daily, adjusted for size, activity, and goals, with carbs near 20–50 g and steady protein.

A daily burn calculator estimates your TDEE using age, sex, height, weight, and activity to show maintenance calories.

Most adults maintain weight on 1,600–2,400 kcal/day for women and 2,000–3,000 kcal/day for men; adjust by activity and your goal.

Most adults land between 1,600–3,000 calories a day based on age, sex, size, and activity; adjust your daily allowance for weight goals.

Most adults maintain weight on ~1,600–3,000 kcal/day based on age, sex, and activity; start in your band and adjust using weekly weight trends.

Most fasting plans set the fasting window at 0–50 kcal: water, black coffee, and plain tea fit; more than that ends the fast for weight-loss goals.

In intermittent fasting, strict windows allow 0 kcal; lenient styles keep additives under 10–50 kcal; water, black coffee, and plain tea are fine.