IB Score to GPA Calculator
Enter your six IB subject scores (1 to 7) and your TOK/EE core points (0 to 3). This tool estimates your overall IB total and an approximate GPA conversion.
How this International Baccalaureate GPA calculator works
This IB GPA calculator helps students translate IB Diploma results into GPA-style values that are easier to compare with U.S. or other grading systems. Since there is no single official global IB-to-GPA conversion, this tool provides a practical estimate using transparent formulas.
Inputs used by the calculator
- Six IB subject grades on the 1-7 scale.
- TOK/EE core points from 0-3.
From those numbers, the calculator returns your total IB score out of 45, percentage equivalent, and two GPA estimates.
IB scoring refresher
The International Baccalaureate Diploma Programme typically includes six subjects. Each subject is scored from 1 (lowest) to 7 (highest). You may also earn up to 3 bonus points from Theory of Knowledge (TOK) and the Extended Essay (EE).
| Component | Range | Maximum Points |
|---|---|---|
| 6 subjects | 1-7 each | 42 |
| TOK + EE core | 0-3 | 3 |
| Total Diploma Score | - | 45 |
What GPA values are shown?
1) Linear GPA estimate (Total/45 × 4.0)
This method scales your total IB points proportionally onto a 4.0 GPA scale. It is simple and consistent for quick comparisons.
2) Subject-based GPA estimate
This method converts each subject grade to a GPA point and averages them:
- 7 → 4.0
- 6 → 3.7
- 5 → 3.3
- 4 → 3.0
- 3 → 2.0
- 2 → 1.0
- 1 → 0.0
Then it adds a small bonus for core points to produce a core-adjusted estimate (capped at 4.0).
How to use this IB score calculator effectively
- Enter all six subject scores exactly as awarded/predicted.
- Add your TOK/EE points.
- Click Calculate IB GPA.
- Compare both GPA estimates and use the one your target schools prefer.
Interpreting your result
The calculator also displays a performance band for quick context:
- 40-45: Excellent
- 35-39: Very Strong
- 30-34: Strong
- 24-29: Passing Range
- Below 24: Below Typical Diploma Threshold
Frequently asked questions
Is there an official IB GPA conversion chart?
No universal official chart exists for all colleges. Institutions often set their own equivalency rules.
Can this be used for predicted grades?
Yes. Many students use this as a planning tool with predicted IB scores to estimate admissions competitiveness.
Does HL vs SL weighting matter here?
This version does not separate HL and SL weighting. It treats all six subject scores equally, which is common in quick conversion tools.
Final thoughts
If you are applying to selective programs, use this international baccalaureate GPA calculator to benchmark your profile early, then cross-check conversion expectations directly with each school. A consistent strategy is to report your full IB score out of 45 and provide an estimated GPA only where requested.