Blood Type Calculator

Predict child blood types and check compatibility

Parent Blood Types

Parent 1

Parent 2

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

Select Blood Type

Can Donate To:

A+AB+

Can Receive From:

O-O+A-A+

O-

Universal Donor

AB+

Universal Recipient

~37%

O+ (Most Common)

~1%

AB- (Rarest)

Predict child blood types.

Donor/recipient matching.

Population frequencies.