IBCC O Level & A Level Equivalence Calculator
Estimate equivalence from selected subjects and IBCC grade-conversion marks.
Estimate equivalence from selected subjects and IBCC grade-conversion marks.
Add only the subjects counted by the applicable IBCC policy. A Level calculation includes the required O Level subjects. Subject selection is not checked automatically.
How to use IBCC O Level & A Level Equivalence Calculator
Select the counted O/A Level subjects and enter each converted grade value. Subject-specific A* values and session rules must be taken from IBCC.
- Choose the conversion mode and check its requirements.
- Enter your values or paste supported plain text.
- Convert and review the result and any compatibility warnings.
Formula and calculation method
Estimated percentage = sum of counted subject conversion marks ÷ counted subjects. Equivalent marks = percentage ÷ 100 × selected certificate total.
The tool shows the converted result and the inputs or character warnings used to produce it.
Worked example
Eight counted subjects converted to 85 marks each give 85%, or 935 out of an entered 1,100 total.
Check before using the result
This is an estimate, not an official certificate. Confirm selected subjects and examination-session rules with IBCC.
Reference sources
- IBCC grade conversion and session-specific tables
- IBCC notification on O Level subjects counted for A Level equivalence
Reference review: 8 October 2026. Verify the applicable session, scheme or policy before making a decision.
Frequently asked questions
How is the result calculated?
Estimated percentage = sum of counted subject conversion marks ÷ counted subjects. Equivalent marks = percentage ÷ 100 × selected certificate total.
Why is there no fixed A* mark?
IBCC publishes subject-specific A* equivalent marks for particular examination sessions. Enter the applicable official value for every A* subject; do not assume 90 or 95 applies universally.
What should I check before converting?
Select the counted O/A Level subjects and enter each converted grade value. Subject-specific A* values and session rules must be taken from IBCC.