Estimate Your Preeclampsia Risk
Enter your details below for an educational risk estimate. This tool is not a diagnosis and does not replace prenatal care.
Important: Seek urgent medical care for severe headache, vision changes, upper abdominal pain, sudden swelling, shortness of breath, or blood pressure ≥ 160/110 mmHg.
What is preeclampsia?
Preeclampsia is a pregnancy complication characterized by high blood pressure and signs of organ stress, typically after 20 weeks of pregnancy. It can affect the liver, kidneys, brain, placenta, and other systems. In severe cases, it can progress quickly and become dangerous for both parent and baby if not recognized and treated early.
Why estimate risk early?
Risk assessment helps guide prenatal planning. If someone is at increased risk, clinicians may recommend:
- Closer blood pressure and urine monitoring
- Earlier or more frequent prenatal visits
- Home blood pressure checks
- Discussion of low-dose aspirin when appropriate
- Targeted counseling on warning signs and when to seek urgent care
Early identification does not mean preeclampsia will occur. It simply helps prioritize prevention and surveillance.
How this preeclampsia risk calculator works
This calculator uses a simple point-based model based on widely recognized risk factors. It includes maternal age, BMI, blood pressure, obstetric history, and medical comorbidities such as chronic hypertension, diabetes, kidney disease, and autoimmune conditions.
Included risk domains
- Demographic factors: younger or advanced maternal age
- Clinical baseline: BMI and current blood pressure
- Obstetric history: first pregnancy, prior preeclampsia, multifetal pregnancy
- Medical history: chronic hypertension, diabetes, kidney disease, autoimmune disease, family history
The final result is an educational estimate, grouped into low, moderate, high, and very high risk categories. It is intended to support discussion with your obstetric care team.
Interpreting your score
Low risk
Lower estimated likelihood, but routine prenatal follow-up is still essential because preeclampsia can still occur without obvious risk factors.
Moderate risk
You may benefit from more structured monitoring and a discussion about preventive strategies, including whether low-dose aspirin is indicated.
High or very high risk
You should speak with a clinician promptly about a personalized prevention and monitoring plan. This can include blood pressure goals, lab surveillance, fetal growth checks, and clear emergency instructions.
Symptoms you should never ignore
- Severe or persistent headache
- Blurred vision, flashing lights, or visual spots
- Pain in the right upper abdomen or shoulder
- Sudden swelling of face, hands, or rapid weight gain
- Shortness of breath
- Nausea/vomiting in later pregnancy with feeling unwell
If these occur, contact your maternity team immediately or go to emergency care.
How to lower risk and protect maternal health
Not all risk is preventable, but proactive care helps:
- Attend all prenatal appointments
- Track blood pressure as advised
- Take prescribed medications consistently
- Ask whether low-dose aspirin is appropriate for your profile
- Manage diabetes and chronic hypertension tightly during pregnancy
- Report concerning symptoms early
Final note
This preeclampsia risk calculator is designed for education and awareness. It does not diagnose preeclampsia and cannot replace clinical evaluation, labs, or fetal assessment. Always follow guidance from qualified obstetric professionals.