DEE.io is a free online Total Daily Energy Expenditure (TDEE) calculator designed to help people make informed nutrition and fitness decisions. By entering basic information such as age, gender, height, weight, and activity level, users receive a personalized estimate of the calories they burn each day. The platform helps users determine maintenance calories, create calorie deficits for fat loss, establish calorie surplus targets for muscle gain, and understand their Basal Metabolic Rate (BMR). In addition to calorie recommendations, TDEE.io provides macro guidance to support practical meal…