The Flourishing Scale is a measure that describes important aspects of psychological well-being, including engagement, social relations, optimism, respect, competence, and meaning in life. The Flourishing Scale is a concise, reliable, and valid instrument, comprising only eight items that are easy to score. It has demonstrated strong psychometric properties and offers flexible administration options, including paper-based, telephone, interview, and online surveys. The measure has been validated and widely used in multiple languages and contexts, including Arabic, Chinese, Croatian, Dutch, French, German, Greek, Indian, Indonesian, Italian, Japanese, Latvian, Malay, Persian, Portuguese, Russian, Spanish, Turkish, Ukrainian, and Urdu. Overall, the Flourishing Scale serves as a useful tool for evaluating psychological well-being in diverse communities.