Maintenance Calories Calculator
Find out exactly how many calories you need each day to maintain your current weight. Your maintenance level is the starting point for every fitness goal.
Understanding Maintenance Calories
Your maintenance calories — also called your Total Daily Energy Expenditure (TDEE) — represent the exact number of calories your body uses in a 24-hour period. Eat this amount and your weight stays the same. It's not a diet. It's not a target to hit. It's just physics: energy in equals energy out.
Most people have never calculated their maintenance calories, which is why so many diets fail. Without knowing your baseline, any calorie target is a guess. You might be eating 1,500 calories thinking you're in a deficit, when your maintenance is actually 1,600 — leaving you frustrated with slow results. Or you might be eating 2,000 calories thinking you're maintaining, when your maintenance is 1,800 — and wondering why you're slowly gaining weight.
The 4 Components of Maintenance Calories
Your daily calorie burn is made up of four components:
BMR (60-70%)
Basal Metabolic Rate. Calories burned just existing — breathing, pumping blood, maintaining body temperature. This is the largest component.
NEAT (15-30%)
Non-Exercise Activity Thermogenesis. Everything from walking to fidgeting to standing at your desk. Highly variable between people.
TEF (8-10%)
Thermic Effect of Food. Energy used to digest and absorb nutrients. Protein has the highest TEF (~20-30% of calories consumed).
Exercise (5-10%)
Intentional physical activity. Surprisingly, this is the smallest component for most people, despite being the one everyone focuses on.
How to Use Your Maintenance Calories
| Goal | Calorie Target | Expected Result |
|---|---|---|
| Aggressive fat loss | Maintenance - 500 | ~1 lb/week loss |
| Moderate fat loss | Maintenance - 300 | ~0.6 lb/week loss |
| Maintain weight | Maintenance | Weight stays stable |
| Lean bulk | Maintenance + 200 | ~0.5 lb/week gain (mostly muscle) |
| Aggressive bulk | Maintenance + 500 | ~1 lb/week gain (muscle + some fat) |
Why Most People Get This Wrong
The biggest mistake is treating the calculator result as gospel. It's an estimate. Your actual maintenance could be 10-15% higher or lower depending on genetics, muscle mass, NEAT levels, sleep quality, stress, and hormonal factors. The calculator gives you a scientifically informed starting point — then you need to test it against reality.
Track your weight daily for 2-3 weeks while eating at your calculated maintenance. Take the weekly average (not individual days, which fluctuate with water weight). If the weekly average is stable, you've found your true maintenance. If it's trending up, reduce by 100 calories. If it's trending down, increase by 100 calories.
Frequently Asked Questions
What are maintenance calories?
Maintenance calories are the total number of calories you need to eat each day to stay at your current weight — no gaining, no losing. It's the balance point where your energy intake matches your energy expenditure. This number is also called your TDEE (Total Daily Energy Expenditure) and includes calories burned through basic body functions (BMR), daily movement, exercise, and digesting food.
How do I find my maintenance calories without a calculator?
The most accurate method is to track your food intake and weight for 2-3 weeks. If your weight stays stable, your average daily calorie intake is your maintenance level. Alternatively, multiply your body weight in pounds by 14-16 for a rough estimate (14 if sedentary, 15 if moderately active, 16 if very active). For a 170 lb moderately active person, that's roughly 2,550 calories.
Should I eat at my maintenance calories?
It depends on your goal. Eat at maintenance to stay at your current weight and body composition. Eat 300-500 calories below maintenance to lose fat at a sustainable rate (~1 lb/week). Eat 200-400 calories above maintenance to build muscle. Most people benefit from knowing their maintenance number first, then adjusting from there based on their goal.
Do maintenance calories change over time?
Yes. Your maintenance calories decrease as you lose weight (smaller body = fewer calories needed), increase as you gain muscle (muscle burns more calories at rest), and change with activity levels and age. Recalculate every 10 pounds of weight change or every 2-3 months. This is why people hit weight loss plateaus — their maintenance dropped but their intake didn't.
What's the difference between maintenance calories and BMR?
BMR (Basal Metabolic Rate) is the calories your body burns doing absolutely nothing — lying in bed all day. Maintenance calories include your BMR plus everything else: walking, working, exercising, and even digesting food. For most people, maintenance calories are 1.3-1.9x higher than BMR depending on activity level.
Track Your Calories Automatically
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