Background: Menorrhagia is one of the most common gynecologic complaints in contemporary gynecology. It is defined as total blood loss exceeding 80 ml per cycle or menses lasting longer than 7 days. Current gynecological survey reports that 30% of all pre-menopausal women perceive their menses to be excessive. So, the main aim of this study was to correlate clinical profile of patients with menorrhagia, etiological factors of menorrhagia, endometrial patterns in cases of menorrhagia, sonography findings in these patients.Methods: This is a prospective study of 100 patients with complaints of menorrhagia that were randomly selected from out-patient department of a tertiary care hospital. In all cases of menorrhagia, detailed history followed by examination and a particular set of investigations including USG was done. All women were subjected to D and C and histo-pathological report taken into account. However all cases of Puberty menorrhagia were excluded from this study as D and C could not be done in them. Treatment was given depending upon cause/age/parity/ family/completion/patient’s desire.Results: AUB is the most common cause of menorrhagia in this study group (60%) with leiomyomas as the second commonest cause (24%). Other causes found were adenomyosis (8%), polyp (4%), IUCD (4%). Maximum cases of menorrhagia are in 40-50 years age group.Conclusions: To conclude AUB (60%) was the commonest cause of menorrhagia followed by leiomyomas (24%), adenomyosis (8%), IUCD (4%) and polyps (4%). Menorrhagia was most common in multiparous (78%) and peri-menopausal age group (40-49 years). Proliferative endometrium was most commonly observed histo-pathological pattern in 58% cases. Leiomyoma was the commonest sonological finding seen in 24% cases followed by adenomyosis in 8% cases.