Online and Free Child Blood Type Calculator – Know Your Baby's Blood Type

Let us know your unborn baby's blood group using our advanced tool. Our printable and downloadable child blood type calculator results can help you discover it!

A baby's probable blood group can be chiefly determined by the mother and the father's genes. While knowing the precise blood group of your unborn baby is not probable, this tool offers you a list of the blood categories that the baby is expected to have.

You can identify your child's possible blood group using a child blood group calculator if you pick the mother's and father's blood categories.

Mother's Blood Type

A+
B+
AB+
O+
A-
B-
AB-
O-

Father's Blood Type

A+
B+
AB+
O+
A-
B-
AB-
O-

Printable and Downloadable Blood Group Determination Results

Blood groups were revealed in the 20th century when Karl Landsteiner discovered that the red blood cells (RBCs) had substances (antigens) on their surfaces, which were later leveraged to craft blood categories. The two significant blood group groupings in humans are the ABO and the Rh systems. The ABO system has 4 blood groups, which include A, B, AB, and O.

Blood category A possesses the antigen A, blood category B possesses the B antigen; AB holds both antigens, and O possesses no antigen on its surface. All the groups are either Rh positive (D) or Rh negative, which means there are 8 key blood groups in all. Acquaintance of both these systems is vital for medical reasons, particularly blood transfusions.

The ABO Blood Group System:

The gene, ABO, influences this blood group system. The 4 blood groups – A, B, AB, and O advance when the child receives one or more of the alleles – A, B or O. A and B alleles are precisely codominant, while O is a silent allele.

Both parents offer one of their two ABO alleles to the child. However, this blood group calculator for your child with printable and downloadable outcomes may not be 100% correct or erroneous.

For instance

Mothers with AB blood category can pass the A or B allele to the baby. Similarly, a father with the O blood category can merely pass the O allele right to the baby.

  • If both parents fit into the blood group O, the child will fit into the O blood group.
  • Two A blood group parents can provide their child with any A or O blood group.
  • Two B blood group parents can offer their child any B or O blood group.
  • One parent with A and another with B will offer the child any A, B, AB, or O blood groups.
  • One parent with A and another with AB will provide any A, B or AB blood groups.
  • One parent with A and another with O will offer their child any A or O groups.
child blood type chart

Rhesus (Rh) Blood Group System:

This is the second-best system and one of the intricate blood categories introduced by Landsteiner and Weiner in 1940. The research with rhesus monkeys on human blood led to the Rh factor, which can be positive or negative. With this blood group system, 8 blood categories were created.

The Rh-positive genotype masks the Rh-negative gene. Consequently, even if you have an Rh+ blood category, you could hold an Rh-negative gene. Likewise, when both parents have the Rh+ gene, it is probable for the child to have the Rh-negative blood category.

Parental Rh type Child's Rh type
+ and + + or -
+ and - + or -
- and - -

Although blood groups are 100% genetically congenital, environmental effects determine which groups are passed on more regularly to subsequent generations. So, the child blood group calculator percentage may not be 100% accurate.

As per the American Red Cross, B (-), AB (-) and O (-) are the fewest blood categories, and they are less than 5 percent of the worldwide population.

Disclaimer: This child blood group calculator is founded on theoretical principles. The insights should not be leveraged to make any assumptions about your family's blood groups. There is a possibility that the blood category calculated here and the real blood category of the baby are not similar. Consequently, we endorse and suggest that you cross-check the baby's blood category with a medical provider rather than entirely depending only on our blood type child parent calculator for determining blood category inheritance.

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