The tool uses a verified food database with calories per 100 grams and unit conversions. When you enter a food and its quantity, it automatically estimates the total calories based on the data provided.

Exercise results are based on MET values — a scientific measure of energy expenditure. They’re designed to give realistic estimates, but actual calorie burn can vary by body type, intensity, and duration.

Yes! Choose “Custom kcal/unit” from the Unit dropdown, then manually enter the calorie value per serving or per unit. This lets you track homemade or new food items easily.

Different apps use unique algorithms and activity intensity levels. This tool provides average-based guidance to help you stay consistent rather than precise to the calorie.

No. All calculations happen locally in your browser. Nothing is uploaded or saved to a server, ensuring full privacy and control.