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Maintenance kcal refers to the number of calories required to keep your body weight stable without gaining or losing fat. Knowing your maintenance kcal is crucial for designing effective nutrition plans, supporting metabolic health, and achieving long-term wellness goals.
Estimating maintenance kcal allows you to adjust your diet according to your goals—whether it’s fat loss, muscle gain, or simply maintaining optimal energy levels. Instead of relying on guesswork, evidence-based calculations give a clear starting point for your daily caloric needs.
Calculate your daily calorie needs based on scientifically validated formulas
Let's start with your basic measurements.
Select the activity level that best describes your typical week.
What's your health and fitness goal?
Maintenance kcal represents your Total Daily Energy Expenditure (TDEE), which combines your basal metabolic rate (BMR) and all calories burned through activity, digestion, and daily movement. TDEE is influenced by age, sex, body composition, activity level, and metabolic efficiency.
To estimate maintenance kcal, start by calculating your BMR using the Mifflin-St Jeor equation:
For men:
BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
For women:
BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Next, multiply your BMR by an activity factor:
Sedentary (little or no exercise): × 1.2
Lightly active (1–3 days/week): × 1.375
Moderately active (3–5 days/week): × 1.55
Very active (6–7 days/week): × 1.725
Extremely active (physical job + training): × 1.9
The result provides your estimated maintenance kcal. Individual variations, including hormonal factors, sleep quality, and metabolic adaptation, can affect accuracy, so monitoring weight over time is recommended.
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Understanding this calculator can raise questions. Here you’ll find clear, evidence-based answers to help you interpret your results and understand the science behind it.
Maintenance kcal is the number of calories needed daily to maintain your current body weight. It accounts for all energy expended through metabolism, activity, and digestion.
Formulas give a close estimate, usually accurate within 5–15%. Tracking your weight while consuming your calculated maintenance kcal over 2–3 weeks confirms your true caloric needs.
Yes. Changes in age, body composition, activity levels, and metabolism can alter maintenance kcal. Regular reassessment helps maintain accuracy for long-term nutrition planning.
Not strictly. Daily fluctuations are normal. What matters most is your average weekly intake to maintain weight stability.
Understanding your maintenance kcal is essential for weight management, metabolic health, and designing effective nutrition strategies. Calculating and monitoring your maintenance kcal provides a scientific approach to maintaining a stable body weight.
By regularly reassessing your maintenance kcal, you can ensure that your diet aligns with your physiology, supporting long-term health, metabolic efficiency, and longevity.
