Blood Type Predictor - Results
📋 This is a sample result. To calculate your own, click here.
Parents: A+ × B+
AB+
18.8–100%
A+
0–50%
B+
0–50%
AB-
0–25%
O+
0–25%
A-
0–12.5%
B-
0–12.5%
O-
0–6.3%
Possible Blood Types for Your Baby
| Blood Type | Probability | % of Population |
|---|---|---|
| AB+ | 18.8–100% | 3% of population |
| A+ | 0–50% | 34% of population |
| B+ | 0–50% | 9% of population |
| AB- | 0–25% | 1% of population |
| O+ | 0–25% | 38% of population |
| A- | 0–12.5% | 6% of population |
| B- | 0–12.5% | 2% of population |
| O- | 0–6.3% | 7% of population |
Blood Type Rarity
Here is how common each blood type is in the general population:
| Blood Type | % of Population | Possible for Your Baby |
|---|---|---|
| O+ | 38% | ✓ |
| A+ | 34% | ✓ |
| B+ | 9% | ✓ |
| AB+ | 3% | ✓ |
| O- | 7% | ✓ |
| A- | 6% | ✓ |
| B- | 2% | ✓ |
| AB- | 1% | ✓ |
Blood Type Inheritance Chart
This chart shows every possible baby blood type (ABO only) for all parent combinations. Probability ranges depend on whether a parent carries a hidden recessive allele.
| Parents | Possible Baby Types | Not Possible |
|---|---|---|
| O × O | O | ABAB |
| O × A | OA | BAB |
| O × B | OB | AAB |
| O × AB | AB | OAB |
| A × A | AO | BAB |
| A × B | ABABO | - |
| A × AB | ABAB | O |
| B × B | BO | AAB |
| B × AB | ABAB | O |
| AB × AB | ABAB | O |
Your combination is highlighted.
Blood Type Compatibility
Blood type determines who you can safely donate to and receive blood from. This is important for transfusions during pregnancy complications, cesarean deliveries, or emergencies.
O-
Gives to
Everyone
Gets from
O-
O+
Gives to
O+, A+, B+, AB+
Gets from
O+, O-
A-
Gives to
A-, A+, AB-, AB+
Gets from
A-, O-
A+
Gives to
A+, AB+
Gets from
A+, A-, O+, O-
B-
Gives to
B-, B+, AB-, AB+
Gets from
B-, O-
B+
Gives to
B+, AB+
Gets from
B+, B-, O+, O-
AB-
Gives to
AB-, AB+
Gets from
AB-, A-, B-, O-
AB+
Gives to
AB+
Gets from
Everyone
Related Tools
This calculator provides probability ranges based on standard Mendelian genetics, not certainty. It is for educational purposes only and is not a substitute for medical blood typing. Consult your healthcare provider for actual blood type testing.