Blood Type Compatibility Checker
Select your blood type to instantly see which blood types you can donate to and receive from. Includes the full ABO + Rh factor compatibility chart and universal donor/recipient information.
How to Use the Blood Type Compatibility Checker
- Select your blood type from the dropdown (O−, O+, A−, A+, B−, B+, AB−, AB+).
- The tool instantly shows which blood types you can donate to and receive from.
- Scroll down to see the full ABO + Rh compatibility chart for all 8 blood types.
Features
- Covers all 8 ABO + Rh blood types (O−, O+, A−, A+, B−, B+, AB−, AB+)
- Shows compatible donor and recipient blood types instantly
- Highlights universal donor (O−) and universal recipient (AB+)
- Full compatibility matrix for all blood type combinations
- Updates live as you change your blood type selection
Blood type compatibility: practical uses
Use blood type compatibility when you need a fast, clear, private result without creating an account. This page also supports related needs like blood type compatibility online, blood type compatibility formula, blood type compatibility example so you can choose the right workflow.
When it helps
- Best for: Getting a quick answer while still seeing the formula, assumptions, and examples behind the number.
- Helpful details: Enter realistic values, compare scenarios, and use the explanation to understand what changed the final result.
- Next step: Try a related calculator when the same decision needs percentages, prices, loans, tax, tips, age, or health estimates.
For the next step, try Percentage Calculator, Discount Calculator, Tip Calculator, BMI Calculator.
Frequently Asked Questions
Why is O− the universal donor?
O− red blood cells lack A antigens, B antigens, and the Rh factor. This means the recipient's immune system won't recognise them as foreign, making O− safe to transfuse to any blood type in emergencies.
What is the Rh factor?
The Rh factor is a protein on the surface of red blood cells. If you have it, you are Rh-positive (+). If not, you are Rh-negative (−). Rh-negative people can only receive Rh-negative blood, while Rh-positive people can receive both.
Does blood type compatibility apply to organ transplants?
This tool specifically covers red blood cell transfusion compatibility. Organ transplant compatibility is more complex and involves additional tissue typing (HLA matching). Always consult medical professionals for transplant decisions.
