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Child's Blood Type Calculator

Free Tool

Input parents' blood types to quickly calculate the probability of child's blood type inheritance through ABO genetic rules.

1.4w users

Father

Blood Type

Mother

Blood Type

Children's Possible Blood Types

A+

A-

O+

O-

Children's Impossible Blood Types

B, AB

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Tool Introduction

This tool calculates (predicts) the possible blood types of your children online by inputting the parents' blood types, combined with genetic laws.

Blood Type Inheritance Rules

Blood type is determined by the combination of three genetic factors: A, B, and O. Most of the time, the blood type of a future baby can be determined based on the parents' blood types.

Blood Type Inheritance Rules - Blood Type Inheritance Chart
Parents' Blood Type	Child's Possible Blood Types	Child's Impossible Blood Types
O and O	O	A, B, AB
A and O	A, O	B, AB
A and A	A, O	B, AB
A and B	A, B, AB, O	——
A and AB	A, B, AB	O
B and O	B, O	A, AB
B and B	B, O	A, AB
B and AB	A, B, AB	O
AB and O	A, B	O, AB
AB and AB	A, B, AB	O

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