Calories & TDEE
How Many Calories to Maintain Your Weight
Maintenance calories and your TDEE are the same number. Find it accurately, confirm it with real-world data, and you have the baseline for every calorie target you will ever set.
Maintenance calories = your TDEE
Your maintenance calories are the exact number of calories that keeps your body weight stable over time. Eat less and you lose weight. Eat more and you gain. That break-even point is your Total Daily Energy Expenditure (TDEE) — the sum of everything your body burns in 24 hours: resting metabolism, daily movement, exercise, and digesting food.
The critical word is “over time.” On any given day, your weight can swing 2–4 pounds due to water retention, sodium, glycogen, and digestive content. None of that is fat gain or fat loss. Your true maintenance is a weekly average, not a snapshot on one Tuesday morning.
Every time someone asks “how many calories to maintain?” and someone else asks “what is my TDEE?” they are asking the same question. The two terms are interchangeable.
How to find your maintenance number
The fastest method is a calculator. The maintenance calories calculator uses your age, height, weight, sex, and activity level to estimate your TDEE. It applies a validated BMR formula and an activity multiplier to produce a starting estimate you can then refine with real data.
What the calculator needs to get right:
- Your accurate bodyweight. Weigh yourself in the morning, after using the bathroom, before eating. Use a recent average of three to five mornings rather than a single reading.
- An honest activity estimate. This is where most calculators go wrong. People consistently overestimate how active they are. If you sit at a desk and do three gym sessions per week, you are probably lightly to moderately active, not very active. Overestimating here can push your maintenance estimate 200–400 calories too high.
- Up-to-date stats. A calculation from two years and 20 pounds ago is not your current maintenance. Re-run it with current numbers.
| Activity level | Example lifestyle | Approximate daily maintenance |
|---|---|---|
| Sedentary | Desk job, minimal exercise | 1,600–2,200 kcal (varies by size) |
| Lightly active | 1–3 gym sessions/wk, otherwise sitting | 1,800–2,600 kcal |
| Moderately active | 3–5 sessions/wk or active job | 2,000–2,900 kcal |
| Very active | Hard exercise 6–7 days/wk | 2,400–3,400 kcal |
| Athlete | Twice-daily training or manual labor | 2,800–4,000+ kcal |
These ranges are wide by design — size matters enormously. A 5’2” woman and a 6’3” man can both be “moderately active” and have maintenance calories 1,000 apart. Use the calculator with your own numbers.
Find your maintenance calories
Your TDEE is the foundation of every calorie target. Get your personal number in under a minute, based on your actual stats and activity.
Calculate my maintenanceConfirming with two to three weeks of data
A calculator gives you a well-grounded estimate, not a lab-precise number. Your real maintenance could be 10–15% above or below the estimate, because individual variation in hormones, muscle fibre composition, and non-exercise activity is larger than any formula can capture.
The confirmation process is straightforward:
- Eat at your estimated maintenance calories for two to three weeks.
- Weigh yourself every morning under the same conditions and record the number.
- Calculate your weekly average weight at the end of each week.
- If your weekly average is stable (within about 0.5 lb of your starting weekly average), your estimate is accurate.
- If you’re consistently gaining, your true maintenance is lower than the estimate. If you’re losing, it’s higher. Adjust by 100–200 calories in the appropriate direction and repeat.
Track food as accurately as possible during this period — ideally with a food scale. If you eyeball portions, you’re likely to underestimate intake by 20–30%, which undermines the entire calibration. Most people who think their metabolism is broken are actually eating more than they realize.
Why maintaining is harder than it sounds
Maintaining weight long-term is genuinely underrated as a skill. The biology works against you in subtle ways: appetite and hunger signals are imprecise, restaurants and packaged foods make portion estimation unreliable, and life events constantly disrupt routine.
Research on people who have lost significant weight and kept it off consistently shows a few shared habits: regular self-weighing (at least weekly), maintaining consistent meal patterns, keeping some form of food awareness even if not formal tracking, and regular physical activity that helps regulate appetite.
The goal is not perfection on any given day — it’s a small enough weekly average error that it doesn’t compound into meaningful weight change over months. A 50-calorie daily overshoot is only about 5 pounds over a year. A 200-calorie daily overshoot is 20 pounds. The drift is slow enough to miss but fast enough to matter.
Most unintentional weight gain comes from a small, consistent overshoot that is invisible day to day. Periodic check-ins — a week of careful tracking every few months — catch drift early before it becomes a significant problem.
Diet breaks and maintenance phases
If you have been cutting calories for an extended period, spending deliberate time at maintenance before continuing has real benefits. Extended calorie restriction gradually lowers your TDEE through hormonal changes and reduced non-exercise activity (called calorie deficit-driven metabolic adaptation). A maintenance phase of four to twelve weeks helps restore:
- Leptin and hunger hormone levels.
- Training performance and recovery quality.
- Non-exercise movement that tends to drop when dieting.
- Mental and social tolerance for controlled eating.
A planned maintenance phase is not a failure of discipline — it is a periodization strategy. Many coaches recommend cycling a 12–16 week cut (see the fat-loss calorie guide) with an 8–12 week maintenance phase rather than dieting indefinitely.
When to recalculate
Your maintenance calories change whenever your body or lifestyle changes significantly. Common triggers to recalculate:
- Every 10–15 lb of weight change (up or down). A lighter or heavier body burns a different number of calories at rest and during movement.
- Major changes in activity level. Starting a new training program, switching from a physical job to a desk job, adding a daily step goal — all of these shift your TDEE meaningfully.
- Significant muscle gain or loss. Muscle tissue is more metabolically active than fat, so adding or losing a few pounds of muscle shifts your maintenance.
- After prolonged dieting. Metabolic adaptation from a long cut can lower your true maintenance by 5–10% below what the formula predicts. Recalculate from real intake-versus-weight data rather than just the formula after a long diet phase.
The FindTDEE calculator takes about a minute to run and gives you an updated estimate whenever your circumstances change.
Frequently asked questions
How many calories do I need to maintain my weight?
Your maintenance calorie number is your TDEE — Total Daily Energy Expenditure. It varies based on your size, age, sex, muscle mass, and daily activity level. Most adults land somewhere between 1,600 and 3,200 calories, but the only reliable way to know your personal number is to calculate it using your actual stats.
Is 2,000 calories a day enough to maintain weight?
For some people, yes. The 2,000-calorie figure on food labels is a statistical reference average, not a universal target. A small, sedentary woman might maintain on 1,600 calories; a large, active man might need 3,000 or more. Use your personal TDEE rather than a round reference number.
Why does my weight fluctuate even when I eat the same calories every day?
Day-to-day weight swings of 1 to 4 pounds are normal even on a perfectly stable calorie intake. They are driven by water retention, sodium levels, glycogen stores, digestive content, hormonal shifts, and stress. Use a weekly average weight, not daily readings, to judge whether your maintenance calories are accurate.
What happens if I eat slightly above maintenance every day?
A consistent surplus of even 100 to 200 calories per day will gradually add weight over months. It is easy to underestimate because the gain is slow — roughly 10 to 20 pounds over a year at a 100-calorie daily surplus. This is how most gradual weight gain happens: not from binge eating but from a small, consistent overshoot.
Should I eat the same calories on rest days and training days at maintenance?
Most people do fine hitting the same daily target seven days a week. If you train very hard, you might want slightly more on training days and slightly less on rest days, but the weekly total is what determines weight. The simplest approach is a flat daily number from your TDEE.
Do I need to track calories forever to maintain my weight?
Not necessarily. Many people develop a good enough feel for their intake after tracking consistently for a few months. However, most research shows that periodic check-ins — logging for a week every few months — help catch quiet drift before it becomes significant weight change.
Can my maintenance calories change over time?
Yes, and they do. Gaining or losing weight changes your TDEE. Adding muscle raises it; losing muscle lowers it. Aging generally lowers it gradually. A significant change in activity — like switching jobs or starting a new sport — can shift it meaningfully. Recalculate whenever circumstances change noticeably.
What is a maintenance phase in dieting?
A maintenance phase is a deliberate period of eating at TDEE after a period of dieting, typically lasting four to twelve weeks. It gives the body time to recover hormones, appetite signals, and metabolic rate that can drift during prolonged calorie restriction. Many coaches recommend a maintenance phase between diet and bulk cycles.