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Free Bishop Score calculator for labor induction assessment. Calculate cervical readiness, predict induction success, and determine need for cervical ripening with clinical recommendations. Our calculator uses the standard five-parameter assessment to evaluate cervical dilation, effacement, station, consistency, and position.
Last updated: February 2, 2026
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0-3 cm: 0pt | 4-5 cm: 1pt | 6 cm: 2pts | >6 cm: 3pts
0-30%: 0pt | 40-50%: 1pt | 60-70%: 2pts | >80%: 3pts
-3: 0pt | -2: 1pt | -1 to 0: 2pts | +1 to +2: 3pts
Bishop Score
5 / 13
Induction Likelihood: Moderate (40-60%)
Clinical Interpretation:
Moderately favorable cervix - May benefit from cervical ripening
Score Breakdown:
Clinical Recommendations:
Bishop Score Interpretation:
Scoring Range
0-3 Points
Measures cervical opening: 0-3 cm (0pt), 4-5 cm (1pt), 6 cm (2pts), >6 cm (3pts).
Scoring Range
0-3 Points
Evaluates cervical thinning: 0-30% (0pt), 40-50% (1pt), 60-70% (2pts), >80% (3pts).
Range
-3 to +3
Assesses fetal descent: -3 (0pt), -2 (1pt), -1 to 0 (2pts), +1 to +2 (3pts).
Options
Firm, Medium, Soft
Firm = 0pt, Medium = 1pt, Soft = 2pts. Soft cervix indicates readiness.
Positions
Posterior, Mid, Anterior
Posterior = 0pt, Mid = 1pt, Anterior = 2pts. Anterior position is favorable.
Score Range
0-13 Points
Higher scores (7-13) indicate high likelihood of successful induction.
For a cervix with 3 cm dilation, 50% effacement, -1 station, medium consistency, and mid position:
Bishop Score
5 / 13
Induction Likelihood
Moderate (40-60%)
Our Bishop Score calculator uses the standard five-parameter assessment system to evaluate cervical readiness for labor induction. The calculation assigns points based on cervical dilation, effacement, fetal station, consistency, and position, then interprets the total score to predict induction success and guide clinical decision-making.
Total Score = Dilation Points + Effacement Points + Station Points + Consistency Points + Position PointsScore Range: 0-13 pointsInterpretation: 0-3 (Unfavorable), 4-6 (Moderate), 7-9 (Favorable), 10-13 (Highly Favorable)Each parameter is scored independently based on clinical assessment findings, then all points are summed to determine the total Bishop Score. Higher scores indicate a more favorable cervix for successful labor induction.
The Bishop Score evaluates five key cervical characteristics that collectively indicate readiness for labor. Each parameter provides important information about cervical status and progression toward labor.
Explore other medical tools like our HCG Weeks Calculator or Child Pugh Score Calculator.
Get Custom Calculator for Your PracticeResult: Bishop Score = 9/13 (Favorable)
This patient has a favorable cervix with high likelihood (70-85%) of successful induction. Cervical ripening is typically not needed, and oxytocin induction can be initiated.
Result: Bishop Score = 0/13 (Unfavorable)
This patient has an unfavorable cervix with low likelihood (10-20%) of successful induction. Cervical ripening with prostaglandin agents (misoprostol, dinoprostone) is strongly recommended before attempting induction.
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