BACKGROUND: The success of induction depends to a large extent on the consistency, compliance and configuration of the cervix. The unripe cervix thus remains a well-recognized impediment to the successful induction of labour. Foley catheter is a method of induction of labour with a reported success rate of 56.8% when the Foley catheter balloon is inflated with 30ml of sterile water. Some studies have suggested better success rate in terms of cervical favourability with higher volumes of fluid inflation volume of Foley catheter balloon. This work aims to compare the use of single balloon catheters inflated to 50ml of water versus 30ml, to assess if it will result in achieving a better Bishop score, with subsequent increase in the likelihood of achieving a vaginal delivery. OBJECTIVE: To compare the efficacy of 50ml versus 30ml fluid inflation of Foley catheter balloon for cervical ripening in post-date nulliparous women billed for induction of labour. STUDY DESIGN: A double blind randomized controlled study. METHODS: Eighty eight nulliparous women with post-dated pregnancy requiring cervical ripening prior to induction of labour were recruited for the study. They were randomized into groups A and B. Those in group A (study group) had cervical ripening with Foleys catheter balloon inflated to 50ml of sterile water while those in group B (control group) had cervical ripening with Foley catheter balloon inflated to 30ml of sterile water. Bishop score was assessed 12 hours post procedure. All ii data was entered into a proforma and analysis was done using the IBM Statistical Package for Social Students for Windows version 20.