From the Pursuit of Happiness: bringing the science of happiness to life
http://www.pursuit-of-happiness.org/science-of-happiness/measuring-happiness/
The following is a list of the most widely used and respected questionnaires. As you can see, we can discover some major differences in how they approach the issue, which reflect different definitions and perceptions of happiness.
Oxford Happiness Inventory (Argyle and Hill)
Subjective Happiness Scale (Lyubomirsky & Lepper)
Satisfaction with Life Scale (Deiner, Emmons, Larsen and Griffin)
Panas Scale (Watson, Clark, Tellegen)
And this is Todd Kashdan’s thoughtful critique of the above scales:
The assessment of subjective well-being (issues raised by the Oxford Happiness Questionnaire)