Blood Type Inheritance Calculator
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Blood Type Inheritance Calculator
Work out the blood types a child can have from the parents' blood types.
Based on the ABO blood group system. Actual probabilities depend on the parents' genotypes (AA/AO, etc.); this shows only which blood types are possible.
How to use
- 1
Pick both parents' blood types.
- 2
Possible child types show in green; impossible ones are struck through.
- 3
Based on ABO inheritance; actual odds depend on the parents' genotypes.
FAQ
Is this tool free?
Yes — it is completely free to use, with no account or sign-up required.
What is this tool?
Find the blood types a child can have from the parents' blood types. Based on ABO inheritance (A and B are dominant, O recessive), pick both parents' types and it shows which child blood types are possible and which are impossible at a glance. Actual probabilities depend on the parents' genotypes (AA/AO, etc.), so this shows whether each type is possible. Everything runs in your browser, free with no install.