Free tool · Scored assessment · L&D
Bishop Score Calculator.
The bedside score that tells you whether a cervix is favorable for induction. Pick the finding for each of the five cervical-exam parameters — dilation, effacement, station, consistency, and position — and get the total (0–13) with the favorable / unfavorable read and what it usually means for cervical ripening. The scoring follows the original Bishop 1964 system; the interpretation follows ACOG induction guidance. The number supports your team's judgment — it doesn't replace the provider's plan.
Score the five cervical-exam parameters
Findings come from the digital cervical exam. The total updates as you go.
Score all five parameters to see the total and favorability.
Bishop scoring table [1][2]
| Parameter | 0 | 1 | 2 | 3 |
|---|---|---|---|---|
| Dilation (cm) | Closed | 1–2 | 3–4 | 5–6 |
| Effacement (%) | 0–30 | 40–50 | 60–70 | ≥80 |
| Station | −3 | −2 | −1 / 0 | +1 / +2 |
| Consistency | Firm | Medium | Soft | — |
| Position | Posterior | Mid | Anterior | — |
Total 0–13. A score of ≤6 is generally considered unfavorable ("unripe") — cervical ripening is often considered before or with induction; a score >8 describes a favorable cervix, where the likelihood of vaginal delivery after induction is similar to spontaneous labor.[1][2] (Some references use ≥8 as the favorable threshold; 7–8 is intermediate.) If a finding falls between the listed bands, round to the nearest one — the gaps reflect Bishop's original increments. Your provider and unit protocol drive the induction plan.
References
- Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol. 1964;24:266–268. PMID: 14199536. (Original five-parameter pelvic/cervical scoring system; dilation, effacement, station scored 0–3 and consistency, position scored 0–2.)
- Bishop Score. StatPearls. Treasure Island (FL): StatPearls Publishing; updated 2023. ncbi.nlm.nih.gov/books/NBK470368. (Scoring table; total 0–13; ≤6 unfavorable / >8 favorable interpretation and clinical use for cervical ripening.)
- American College of Obstetricians and Gynecologists (ACOG). Induction of labor (Practice Bulletin). Washington, DC: ACOG. acog.org. (An unfavorable Bishop score is a common indication for cervical ripening before induction.)
Parameter bands and interpretation were transcribed from these sources. Modified Bishop variants and local protocols differ; your provider's approach takes precedence.
Pairs well with