Introduction: Endometriosis is a chronic painful disease that affects the daily quality of life of individuals. Estimated rates show one in 10 women has endometriosis, although the actual prevalence is unknown. In this study, the impact of endometriosis prevalence and symptoms on women's lives in Turkey was questioned through a web-based questionnaire.Methods: We utilized a version of the World Endometriosis Research Foundation (WERF) EndoCost tool, which was sent to applicants via social media. Data from women aged 18-50 years were analyzed.Results: The results of 15,673 participants have been analyzed, and 2880 (18.3%) participants had endometriosis. Respondents with endometriosis reported urinary, neurological, and gastrointestinal disorders at statistically higher rates when compared to individuals without endometriosis diagnosis (54.2%, 84.5%, and 89.9% vs. 37.2%, 75.5%, and 81.1%, respectively; p = 0.001). Most respondents with endometriosis (80.1%) reported persistent fatigue and 21.2% of endometriosis participants reported feeling socially isolated related to their condition (p = 0.001). Of the participants with endometriosis, 63.2% mentioned that people did not believe their pain or symptoms and 77.9% experienced financial difficulties due to the cost of therapy. Of the participants with endometriosis, 46.0% reported that they had problems in their personal relationships, 28.3% had difficulties at work/school, and 7.4% were unable to attend class/work due to endometriosis-related symptoms.Conclusion: Endometriosis is a chronic, underestimated disease that affects 18% of Turkish women of reproductive age. There is a need for guidelines to inform healthcare providers, population professionals, and patients. Societies and governmental health authorities must work together to resolve this public health issue.