Use this daily calorie calculator to estimate your calorie needs based on activity level and general body information. The result provides a helpful reference for planning.
Daily Calorie Intake Calculator
How This Daily Calorie Intake Calculator Works
This daily calorie intake calculator estimates how many calories your body may need each day using the Mifflin–St Jeor equation. This equation is widely used in nutrition research to estimate basal metabolic rate (BMR), which represents the calories your body uses at rest. The estimate is then adjusted based on your activity level and selected goal to provide a general daily calorie guideline. To better understand how body size and composition relate to calorie needs, you may also explore our BMI calculator and body fat percentage calculator.
Understanding Different Calorie Goals
For weight maintenance, estimated calorie intake is aligned with your daily energy expenditure. For fat loss, a moderate calorie reduction is applied to support gradual and sustainable change. For muscle gain, a small calorie surplus is added to support training and recovery. These values are general educational guidelines and should not be interpreted as medical advice or personalized treatment plans. Complementary tools such as our daily protein intake calculator, ideal weight calculator, and intermittent fasting calculator can provide additional context around nutrition, body weight, and eating patterns.
Frequently Asked Questions
This calorie calculator provides a reasonable estimate for most healthy adults. Actual calorie needs may vary depending on metabolism, body composition, activity patterns, and lifestyle factors. The result should be used as a starting point rather than an exact target.
Reducing calories too aggressively is not recommended. Balanced nutrition, adequate protein intake, and sufficient energy for daily activity are important for overall health. If you are unsure about calorie adjustments, using tools such as a protein intake calculator for context and consulting a qualified healthcare professional or registered dietitian is advised.
This calorie intake calculator is provided for educational and informational purposes only. It does not offer medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional or registered dietitian before making significant dietary or lifestyle changes, especially if you have a medical condition or specific health concerns.