Bishop Score Assessment
Select the cervical exam findings below to calculate the Bishop score and determine the favorability of the cervix for induction.
Cervical dilation (cm)
Cervical effacement (%)
Fetal station
Cervical consistency
Cervical position
Total Bishop score
0
Interpretation
Unfavorable cervix
Bishop score < 6 often warrants cervical ripening or alternative induction strategies.
How to Use This Calculator
Perform a cervical exam
Collect dilation, effacement, station, consistency, and position findings during a sterile exam.
Select the corresponding categories
Match exam findings to the closest option for each Bishop component.
Interpret the total score
Scores ≥8 indicate a favorable cervix. Lower scores may benefit from ripening agents before induction.
Formula
Bishop score = dilation points + effacement points + station points + cervical consistency points + cervical position points
Favorability thresholds:
• 0–5: Unfavorable
• 6–7: Intermediate / ripe with preparation
• ≥8: Favorable for induction
Full Description
The Bishop score evaluates cervical readiness for labor by assessing dilation, effacement, fetal station, cervical consistency, and position. Higher scores correlate with a greater likelihood of successful induction and vaginal delivery. Clinicians use the Bishop score to determine whether cervical ripening agents (prostaglandins, balloon catheters) or alternate induction strategies are needed.
Frequently Asked Questions
Does a low score mean induction will fail?
Not necessarily. It indicates that cervical ripening may improve the chance of success. Induction strategies can be individualized.
Can the score change quickly?
Yes. Cervical status can evolve over hours or days, particularly with ripening agents or spontaneous labor onset.
Do prior vaginal deliveries affect the score?
Multiparous patients may respond better to induction even with intermediate scores; clinical context matters.
Is the Bishop score used for scheduled cesarean?
Typically no. It is most valuable when planning induction of labor or assessing spontaneous labor progress.