OBJECTIVES: EQ 5D is the most commonly used generic preference based health related quality of life HRQoL measure. The current study aimed at estimating the HRQoL index scores using EQ 5D 5 L measure in the capital of Iran moreover, identifying some determinants of the HRQoL. ...CONCLUSIONS: The current study reported HRQoL norm data for the general adult population in the capital of Iran these data could be very useful for policy making and economic evaluations. ...