Calorie Counting

Maintenance Calories: How to Calculate & Use Your TDEE

Updated March 4, 2026•9 min read

By Daily Nutrition Tracker Editorial Team · Reviewed by nutrition professionals

Person calculating maintenance calories for weight management and nutrition planning

Maintenance calories are the exact number of calories your body needs per day to maintain your current weight — no gain, no loss. Also called your TDEE (Total Daily Energy Expenditure), this number is the foundation of every effective nutrition plan. Whether your goal is weight loss, muscle building, or simply eating the right amount for your activity level, understanding your maintenance calories is the essential first step.

Key Takeaways

✓Maintenance calories = TDEE = the calories you burn per day across all activity
✓Calculate it by multiplying your BMR (resting metabolism) by an activity factor (1.2–1.9)
✓To lose weight: eat 300–500 calories below maintenance
✓To gain muscle: eat 200–300 calories above maintenance
✓Recalculate every 10–15 lbs of weight change or when activity levels shift significantly

What Are Maintenance Calories?

Maintenance calories — often called maintenance level or TDEE (Total Daily Energy Expenditure) — represent the precise number of calories your body burns in a typical 24-hour period. When you eat exactly this amount, your weight stays stable over time. Eat more and you gain weight. Eat less and you lose weight.

Your maintenance calories include all energy expenditure throughout the day:

Basal Metabolic Rate (BMR): Calories burned at complete rest — breathing, circulation, cell production, nutrient processing. This accounts for 60–70% of your total daily burn.
Physical activity: All movement from structured exercise, walking, taking stairs, household chores, and even fidgeting. This is 15–30% of your total.
Thermic effect of food (TEF): Energy used to digest, absorb, and process the food you eat — roughly 8–10% of total calories consumed.

ℹ️ Why "maintenance" matters more than you think

Your maintenance calories are the reference point for every nutrition goal. Want to lose fat? Subtract from maintenance. Build muscle? Add to maintenance. The number itself tells you how much energy your current body and lifestyle require — invaluable information whether you're trying to change or simply understand your needs.

How to Calculate Your Maintenance Calories

Calculating maintenance calories requires two steps: finding your BMR, then multiplying by your activity level.

Step 1: Calculate Your BMR

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest. The most accurate formula is the Mifflin-St Jeor equation, developed in 1990 and validated across thousands of subjects:

Men: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years) + 5
Women: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years) − 161

Example: A 30-year-old woman who is 165 cm tall (5'5") and weighs 68 kg (150 lbs) would have a BMR of approximately 1,430 calories per day.

Step 2: Multiply by Your Activity Factor

Your BMR only accounts for resting metabolism. To get your full maintenance calories (TDEE), multiply your BMR by the activity multiplier that best describes your typical week:

Activity Level	Lifestyle Description	Multiplier
Sedentary	Desk job, minimal walking, no regular exercise	× 1.2
Lightly Active	Light exercise or sports 1–3 days/week	× 1.375
Moderately Active	Moderate exercise 3–5 days/week	× 1.55
Very Active	Hard exercise 6–7 days/week or physical job	× 1.725
Extremely Active	Very hard exercise daily + physical job or athlete in training	× 1.9

Using the example above: 1,430 BMR × 1.55 (moderately active) = 2,217 maintenance calories per day. This woman would need to eat roughly 2,200 calories daily to maintain her current weight of 150 lbs.

⚠️ Most people overestimate their activity level

Research shows that people consistently overestimate how active they are. If you work a desk job and go to the gym 3 times per week for 45 minutes, you're likely "lightly active" (1.375), not "moderately active" (1.55). When in doubt, choose the lower multiplier and adjust after tracking results for 2–3 weeks.

Maintenance Calories vs BMR: What's the Difference?

BMR and maintenance calories are related but measure different things. Confusing them is one of the most common mistakes in calorie planning.

	BMR	Maintenance Calories (TDEE)
Definition	Calories burned at complete rest	Total calories burned in a full day
Includes activity?	No — assumes lying still 24 hours	Yes — all movement, exercise, and digestion
Typical value (adult woman)	1,200–1,600 cal/day	1,600–2,400 cal/day
Typical value (adult man)	1,500–2,000 cal/day	2,000–3,200 cal/day
What it's used for	Starting point for TDEE calculation	Your actual daily calorie target

Critical rule: Never eat below your BMR for extended periods. Doing so typically causes muscle loss, metabolic slowdown, extreme fatigue, and nutrient deficiencies. Your maintenance calories (TDEE) are what you adjust around — not your BMR.

20–40%

higher than BMR

Maintenance calories are typically 20–40% higher than BMR for most adults, depending on activity level

How to Use Maintenance Calories to Reach Your Goal

Once you know your maintenance calories, setting your target for any goal becomes straightforward. Your maintenance number is the baseline — you adjust up or down depending on whether you want to gain, lose, or maintain weight.

Goal	Daily Calorie Target	Expected Weekly Result
Lose weight (slow)	Maintenance − 250–300 cal	0.5 lb fat loss per week
Lose weight (standard)	Maintenance − 500 cal	1 lb fat loss per week
Lose weight (aggressive)	Maintenance − 750 cal	1.5 lbs loss per week (short-term only)
Maintain current weight	Maintenance (no change)	Weight stays stable
Lean muscle gain	Maintenance + 200–300 cal	0.25–0.5 lb gain per week
Faster bulk	Maintenance + 400–500 cal	0.5–1 lb gain per week (some fat gain expected)

💡 The 500-calorie rule explained

A 500-calorie daily deficit creates a 3,500-calorie weekly deficit, which roughly equals 1 pound of stored fat. This is why 500 calories below maintenance is the most commonly recommended target — it's fast enough to see results weekly and slow enough to preserve muscle mass and avoid extreme hunger.

Use our free BMR Calculator to calculate your maintenance calories across all activity levels in under 60 seconds. Then use the Macro Calculator to split your target into protein, carb, and fat goals.

How Accurate Are Maintenance Calorie Calculations?

Maintenance calorie calculators provide useful estimates — not exact measurements. Your actual calorie burn can differ from any formula's prediction by 10–15% due to individual variation in metabolism, muscle mass, genetics, and daily movement patterns.

The most accurate way to find your true maintenance calories is through real-world testing:

Calculate your estimated maintenance calories using a BMR calculator
Eat at that calorie level consistently for 2–3 weeks
Weigh yourself daily at the same time (morning, after bathroom, before eating)
Take the weekly average weight to smooth out daily water fluctuations
Adjust based on results: If weight is stable, your calculation was accurate. If losing weight, add 100–200 calories. If gaining weight, subtract 100–200 calories.

ℹ️ Why 2–3 weeks is the sweet spot

One week isn't enough — water weight, sodium intake, menstrual cycle, and digestive contents can mask fat changes. Two to three weeks gives you enough data to see true trends without waiting months. Weekly weight averages are far more informative than daily readings.

When to Recalculate Your Maintenance Calories

Your maintenance calories are not a fixed number for life. They change as your body composition, weight, age, and activity level change. Failing to recalculate is one of the main reasons people hit weight loss plateaus.

Recalculate your maintenance calories when:

You've lost or gained 10–15 pounds. A lighter body requires fewer calories to maintain. A 150-lb person burns fewer calories than a 180-lb person doing the same activities.
Your activity level changes significantly. New job (desk to physical labor or vice versa), new exercise routine, injury preventing workouts, or seasonal changes (e.g., cycling in summer vs. sedentary in winter).
You've been in a calorie deficit for 8+ weeks. Prolonged dieting causes metabolic adaptation — your body reduces NEAT (non-exercise activity) and metabolic rate by 5–15%. Recalculating prevents stalled progress.
Every 6–12 months as a maintenance check. BMR naturally declines 2–3% per decade after age 20 due to muscle loss. An annual recalculation keeps your targets accurate.

~100–200 cal

TDEE decrease per 10 lbs lost

On average, maintenance calories drop by 100–200 calories for every 10 pounds of weight lost

Common Mistakes When Using Maintenance Calories

Eating at BMR instead of TDEE. Your BMR is not your maintenance calories — it's 20–40% lower. Eating at BMR puts most people in an extreme deficit that causes muscle loss and fatigue.
Choosing the wrong activity multiplier. Most people overestimate. Three gym sessions per week with a desk job is "lightly active" (1.375), not "moderately active" (1.55).
Not tracking food accurately. If you're eating at calculated maintenance but still gaining weight, you're likely underestimating portions. Use a food scale for calorie-dense foods (oils, nuts, grains, meat).
Expecting perfect accuracy. Formulas are estimates. Treat your calculated maintenance as a starting point and adjust based on 2–3 weeks of real results.
Forgetting to recalculate after weight loss. Your maintenance calories drop as you lose weight. Eating the same amount that created a deficit at 200 lbs may only maintain your weight at 170 lbs.

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Frequently Asked Questions

What are maintenance calories?

Maintenance calories are the number of calories you need to eat per day to maintain your current weight without gaining or losing. Also called TDEE (Total Daily Energy Expenditure), this number includes your resting metabolism (BMR) plus all physical activity, exercise, and the energy used to digest food. Eating at maintenance keeps your weight stable over time.

How do I calculate my maintenance calories?

Calculate maintenance calories in two steps: (1) Find your BMR using the Mifflin-St Jeor equation based on your age, sex, height, and weight. (2) Multiply your BMR by an activity factor between 1.2 (sedentary) and 1.9 (extremely active). For example, a BMR of 1,500 × 1.55 (moderately active) = 2,325 maintenance calories. Use a free BMR calculator to do this automatically.

Is maintenance calories the same as TDEE?

Yes — maintenance calories and TDEE (Total Daily Energy Expenditure) are the same thing. Both terms refer to the total number of calories your body burns in a day. The terms are used interchangeably in nutrition. If you eat your TDEE/maintenance calories, your weight stays stable. Eat below it to lose weight; eat above it to gain weight.

How many calories below maintenance should I eat to lose weight?

To lose weight safely, eat 300–500 calories below your maintenance level per day. A 500-calorie daily deficit produces approximately 1 pound of fat loss per week. A 300-calorie deficit produces about 0.5–0.6 pounds per week. Deficits larger than 750 calories are not recommended for most people as they increase muscle loss, extreme hunger, and metabolic slowdown.

What happens if I eat below my maintenance calories?

Eating below your maintenance calories creates a calorie deficit, which forces your body to burn stored fat for energy, resulting in weight loss. The size of the deficit determines how fast you lose weight. A 500-calorie deficit typically produces 1 pound of fat loss per week. However, eating too far below maintenance (more than 750–1,000 calories) can cause muscle loss, fatigue, and metabolic adaptation.

How often should I recalculate my maintenance calories?

Recalculate your maintenance calories every 10–15 pounds of weight change, whenever your activity level changes significantly, or after 8+ weeks in a calorie deficit. As you lose weight, your maintenance calories decrease because a lighter body requires less energy. Failing to recalculate is a common reason for weight loss plateaus.

Can I eat my maintenance calories and still lose weight?

No — eating at maintenance calories keeps your weight stable by definition. To lose weight, you must eat below your maintenance level to create a calorie deficit. However, if you significantly increase your activity level (e.g., start training for a marathon) while eating the same amount, your maintenance calories increase, which can create a deficit and lead to weight loss.

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