Pre-eclampsia Risk Calculator

About this calculator

This pre-eclampsia risk calculator is a simplified educational screening score that combines established maternal risk factors — advanced maternal age, high pre-pregnancy BMI, chronic hypertension, pre-existing diabetes, a first pregnancy (nulliparity), multiple gestation (twins or more), and a personal or family history of pre-eclampsia — into a single relative risk estimate, reflecting the same categories of factors clinicians weigh in first-trimester screening.

Pre-eclampsia (new-onset high blood pressure with organ involvement after 20 weeks) is a leading cause of maternal and fetal complications, which is why real clinical risk assessment combines these factors with blood pressure measurement, uterine artery Doppler, and biomarkers like PlGF under protocols such as the Fetal Medicine Foundation algorithm. This tool is for education only and is not a diagnosis — always discuss actual risk assessment and low-dose aspirin prophylaxis with an obstetrician.