Bishop Score (cervical favorability)
Score the five-component Bishop score for cervical readiness before labor induction: dilation (0-3 points), effacement (0-3), station (0-3), cervical consistency (0-2), and cervical position (0-2), for a total of 0-13.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Dilation
- 3 cm
- Effacement
- 60 %
- Station
- -1
- Consistency
- Medium
- Position
- Anterior
Result: Bishop 9 (favorable; induction success likely).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- <6
- Unfavorable cervix; cervical ripening is commonly used before induction per source.
- 6-7
- Intermediate; induction success is less certain.
- >=8
- Favorable cervix; likelihood of successful induction approaches that of spontaneous labor.
What you enter
- Dilation
- Effacement
- Station (-3 to +2)
- Consistency
- Position
What this is
Sophie Well returns the total with the standard interpretation: a score of 8 or higher predicts a vaginal delivery probability comparable to spontaneous labor; a score of 6 or lower (often described as an 'unfavorable cervix') is associated with longer induction times and higher cesarean rates and typically prompts cervical ripening before oxytocin.
When to use it
Use this when planning a labor induction or when counseling a patient about expected induction success. The Bishop score is most useful for nulliparous patients - in multiparous patients with a history of vaginal delivery, even lower scores are commonly successful. Modified scoring schemas exist (modified Bishop, simplified Bishop) but the components are the same; use the version your hospital protocol references for documentation. The score guides ripening agent selection (mechanical vs. prostaglandin) and counseling but does not change the indication for induction.
How this is calculated
Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol. 1964;24:266-268. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
More in Obstetrics and pediatrics.