Calorie Calculator

Calorie Calculator — Estimate Daily Calorie Needs

The Calorie Calculator helps you estimate the number of calories your body needs each day based on your age, gender, height, weight, and activity level. Knowing your daily calorie requirement is the foundation of any successful weight loss, weight gain, or maintenance plan. Whether you are an athlete tracking performance, a beginner starting a fitness journey, or someone simply curious about their metabolism, this calculator provides a fast and reliable estimate in seconds.

How Calorie Needs Are Calculated

The tool uses the well-established Mifflin-St Jeor equation to compute your Basal Metabolic Rate (BMR) — the calories your body burns at rest to keep vital functions running. Your BMR is then multiplied by an activity factor that reflects how much you move during a typical day (sedentary, lightly active, moderately active, very active, or extra active). The result is your Total Daily Energy Expenditure (TDEE), which represents the calories you need to maintain your current weight.

Using the Result

If your goal is weight loss, eat 300–500 calories below your TDEE for steady, sustainable results — roughly 0.5 kg per week. For weight gain, add 300–500 calories above TDEE while focusing on protein and strength training. Maintenance is simply matching your daily intake to your TDEE. Combining accurate calorie tracking with a balanced macronutrient distribution (protein, carbs, and fats) yields the best long-term outcomes.

Why Use Our Calorie Calculator?

This calculator is free, instant, and mobile-friendly. It requires no signup, stores no personal data, and uses a scientifically validated formula trusted by nutritionists worldwide. Save the page and revisit it whenever your weight, training intensity, or goals change — recalculating every few weeks keeps your plan aligned with your real needs.

Tamer Baghdadi

CEO / Co-Founder