Stillbirth Risk Calculator

Your details

Age at the start of or during pregnancy.
years
Your weight before pregnancy, used to calculate BMI.
kg
Your height.
cm
Ethnicity is a documented independent predictor of stillbirth risk in the epidemiological literature.
Nulliparity is associated with higher stillbirth risk. Very high parity (4+) also carries modestly elevated risk.
A prior stillbirth is one of the strongest independent risk factors, approximately 5-6 times baseline odds.
Assisted reproductive technology is associated with a modestly higher risk of adverse pregnancy outcomes.
Pre-existing diabetes (type 1 or 2) substantially raises stillbirth risk. Gestational diabetes carries a smaller, context-dependent elevation.
Pre-existing high blood pressure is linked to approximately 2-3 times the baseline stillbirth risk.
SLE is associated with increased fetal loss and adverse pregnancy outcomes.
APS carries a substantially elevated risk of fetal loss and stillbirth due to placental thrombosis.
Smoking is one of the most modifiable risk factors. Even light smoking increases stillbirth risk by ~55%. Heavy smoking roughly doubles it.
Regular alcohol consumption during pregnancy is associated with increased fetal loss. Any amount during pregnancy is considered unsafe.
Estimated stillbirth riskModerately elevated risk
1.09%

Estimated probability of stillbirth based on the entered risk factors

Approximate odds1 in 92
BMI23.9kg/m²
U.S. baseline risk0.55%
Relative risk vs. baseline2
2 x baseline
Near baseline<1.5Moderately elevated1.5-3Significantly elevated3-6Highly elevated6+

Estimated risk is 1.09% - moderately above the U.S. baseline of 0.55%.

  • The U.S. population baseline risk is approximately 0.55% (about 1 in 181). Your estimated risk is 1.09%.

Next stepEven a near-baseline result benefits from standard antenatal care, including attending all scheduled scans and promptly reporting any reduction in fetal movement.

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