Clinical Decision Support Tool
VBAC Success
Probability Estimator
Evidence-based calculator to estimate the likelihood of a successful vaginal birth after cesarean, based on validated clinical factors.
⚕️ For educational purposes only. This tool is not a substitute for professional medical advice. Always discuss delivery options with your obstetric care provider.
Maternal Characteristics
kg/m² — BMI < 30 is associated with higher VBAC success
As per MFMU VBAC calculator (Grobman et al.)
Obstetric History
Dystocia (failure to progress) reduces VBAC success probability
Favorable Clinical Factors
Awaiting Input
Fill in the maternal characteristics and obstetric history, then tap Calculate to see your estimated VBAC success probability.
📖 Methodology
Based on the MFMU VBAC Calculator (Grobman et al., 2007) and supplementary evidence from ACOG Practice Bulletin No. 205. Key predictors include prior vaginal delivery, BMI, age, ethnicity, indication for prior cesarean, and cervical status. This tool provides an estimate — individual clinical context may vary substantially.