Abstract: A method and an apparatus for calculating a biometric index using biometric information are disclosed. An apparatus for calculating a biometric index using biometric information is provided, the apparatus comprising: a transmission/reception unit for receiving biometric information collected by a user terminal or a biometric information collection apparatus; a storage unit for storing an index calculation formula for calculating a biometric index and a daily body index using the biometric information and daily body index; an extraction unit for extracting the stored biometric information and index calculation formula; and a calculation unit for calculating a biometric index and a daily body index using the received biometric information and the predetermined index calculation formula, wherein the biometric index includes one or more of an eating behavior index, an activity index, a sleep index and a heart rate variability index, and calculates the daily body index using the biometric index.