Mother & Baby
What blood type could your baby have?
See every possible group and Rh combination instantly
Blood type follows the rules of genetic inheritance (the ABO system and the Rh factor). Choose each parent's blood group and Rh, and see instantly every combination the baby could have - either parent may carry hidden genetic variants, so the honest answer is often more than one type.
Mother
Father
The mother is Rh negative and the baby could be Rh positive - doctors usually monitor for Rh incompatibility during pregnancy (often with a preventive anti-D immunoglobulin shot).
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This is an informational genetics calculator - a real blood test is needed for confirmation.
Inheritance according to MedlinePlus Genetics (ABO) and Mayo Clinic (Rh).