Frequently Asked Questions

A calorie is a unit of energy. In nutrition, it measures the energy food provides. Your body uses calories to fuel physical activity, digestion, and bodily functions like breathing and cell repair.

We use scientifically validated formulas such as Mifflin-St Jeor and standard macro conversions. While accurate for general use, they're estimates. Individual variations (e.g. metabolism, medical conditions) may affect outcomes.

BMR is the number of calories your body needs to perform basic functions at rest - like breathing, circulating blood, and maintaining body temperature. It does not include physical activity.

We use the Mifflin-St Jeor formula: For men: 10 * weight(kg) + 6.25 * height(cm) - 5 * age + 5 For women: 10 * weight(kg) + 6.25 * height(cm) - 5 * age - 161

TDEE represents the total number of calories you burn per day. It includes your BMR plus energy used during activity, exercise, digestion (TEF), and daily movement.

The calorie calculator estimates your TDEE based on BMR and an activity multiplier. It then adjusts your intake based on your goal - weight loss, maintenance, or muscle gain.

Macronutrients are nutrients required in large amounts: carbohydrates, proteins, and fats. Each provides calories: - Carbs: 4 kcal/g - Protein: 4 kcal/g - Fat: 9 kcal/g

The macro calculator divides your daily calorie target into protein, carbs, and fat according to your selected ratio or goal. You can use presets or customize your distribution.

It depends on your goals: - Fat loss: 40% protein, 30% carbs, 30% fat - Muscle gain: 30% protein, 50% carbs, 20% fat - Maintenance: 30% protein, 40% carbs, 30% fat

Yes. Our macro calculator allows you to input custom macro percentages, as long as they total 100%. This helps tailor your diet to personal needs or advice from a nutritionist.

You can enter your weight in kilograms or pounds, and height in centimeters or feet/inches. We handle conversions automatically and ensure accurate results.

No account is required. All tools are free to use - no registration or personal data needed.

While helpful for general wellness, these calculators are not a substitute for professional medical advice. Always consult a healthcare provider before starting a new diet or exercise program.

Yes. The site is fully responsive and works on smartphones, tablets, and desktops.

No. All calculations are done in-browser and we do not store, share, or track your data. Your privacy is fully respected.