Use this free IB Diploma grade calculator to combine your internal assessment and exam paper marks into an estimated subject grade on the 7–1 scale. You can also see what you need on remaining components to reach your target grade.
International Baccalaureate Diploma Programme, with subject grades from 7 (highest) to 1 (lowest).
Add each assignment, quiz or exam with its percentage weight. Marks and weights are automatically clamped between 0 and 100.
| Assessment | Weight (%) | Score (%) | |
|---|---|---|---|
Weight is how much each item counts toward the final mark (these usually add up to 100). Score is the mark you received out of 100.
Choose a target overall percentage and the assessment you want to solve for. The calculator will estimate the minimum score needed on that assessment.
Copies a link that reopens this exact calculation — handy for sending to a friend or saving for later.
In the IB Diploma Programme, each subject is awarded a grade from 7 (highest) to 1 (lowest). Your final subject grade is based on a mix of:
Exact weightings vary by subject and level (HL vs SL), but a common pattern is something like 20–30% for IA and 70–80% for written exams. The raw marks are converted to scaled marks and then mapped to the 7–1 grade boundaries set by the IB.
This calculator uses an approximate mapping from percentage to 7–1 grades, so you can quickly see where your combined performance might sit. For exact boundaries, you'll need the official IB documentation for your subject and session.
You can rename each row, add or remove components, and adjust weights to match any specific IB subject, whether HL or SL.
Many IB students aim for a grade 6 or 7 in their higher level subjects, or across their best subjects for university applications. The "What do I need on the final?" section helps you answer:
"What do I need on Paper 2 (or my IA) to end up with a 6 or 7 overall?"
This is useful for planning how much you need to push in final exams if your IA or earlier papers didn't go as planned.
The real IB marking and scaling process is more complex than a simple weighted average:
This calculator is designed to give a simple, percentage-based estimate for an individual subject, not an official prediction. Always rely on your school and the IB's official documentation for final results and full Diploma scoring.
If you're comparing systems or planning study in another country, you might also want:
All of these calculators use the same simple interface, so once you understand one, the others will feel familiar and quick to use.
November session results are typically released in early January, and May session results are typically released in early July. Check with your school or the IB's official candidate results service for the exact date.
The maximum score is 45 points: up to 7 points in each of your 6 subjects (42 points total), plus up to 3 bonus points from Theory of Knowledge and the Extended Essay combined. The overall passing threshold is commonly cited as 24 points, but there are additional conditions (such as limits on how many grades of 2 or 3 you can have, and no automatic award with a grade of 1) — check the IB's official award requirements for the full criteria.
There's no single official cutoff, but scores in the low-to-mid 30s are commonly considered solidly above the global average, and 40+ is generally competitive for highly selective universities. Requirements vary a lot by institution and program, so always check the specific admissions requirements you're targeting.
Yes — each of your six subject grades (7 to 1) contributes directly to your 45-point total, so a low grade in one subject lowers your overall score. Some universities also look at your individual subject grades rather than just the total, especially where a specific subject is a course requirement.
Switch to a different grading system – each calculator uses the same layout so it’s easy to use.