Modified Bishop Score Calculator

About this calculator

The modified Bishop score is an obstetric scoring system used to assess how ready (“favorable”) the cervix is for labor induction, summing points across five components — cervical dilation, effacement, fetal station, cervical consistency, and cervical position — each scored on its own small scale, for a total that typically ranges from 0 to 13.

A higher total score indicates a more favorable cervix and generally correlates with a higher likelihood of successful induction leading to vaginal delivery, while a low score often means the cervix needs preparatory (“ripening”) treatment before induction is attempted. Obstetricians and labor-and-delivery clinicians use it as a standard part of the pre-induction assessment alongside other clinical factors. This calculator sums the five component scores you enter into the total modified Bishop score — it is not medical advice and does not replace clinical evaluation.