The WHO-5, by the World Health Organization, is a self-report tool measuring mental well-being. It consists of 5 statements relating to the past 2 weeks.
Each statement is rated on a 6-point scale, with higher scores indicating better mental well-being.
Online version (calculator)(external link)
Note: The PDF version has been translated into over 30 languages. Learn more about the WHO-5 well-being index and its translations.(external link)