How is the IB Diploma score calculated?

The IB Diploma score is the sum of grades from 6 subjects (each scored 1–7, maximum 42 points) plus bonus points earned from Theory of Knowledge (TOK) and the Extended Essay (EE). The maximum possible score is 45 points (42 subject points + 3 bonus points). Most universities require a minimum of 30–38 points for competitive programs.

What are the IB TOK and EE bonus points?

TOK and EE are each graded A–E. The combined grade determines bonus points: A+A = 3 points, A+B or B+A = 2 points, A+C, C+A, B+B, or B+C = 1–2 points, C+C = 1 point. A grade of D in either reduces bonus to 0. A grade of E in either TOK or EE is a failing condition — it means the diploma is not awarded regardless of your total score.

What is the minimum score to earn the IB Diploma?

To earn the IB Diploma, students must: (1) score at least 24 total points, (2) not have any subject grade below 2, (3) not have more than one grade of 1 in any subject, and (4) not have an E grade in TOK or the Extended Essay. A score of 24 is the minimum — most universities worldwide require 28–36 points for admission.

What IB score do I need for top universities?

Competitive universities have varying IB requirements. Oxford and Cambridge typically require 38–42 points. US Ivy League schools often look for 38–44. Canadian universities like UBC or Toronto commonly require 30–36. Australian Group of Eight universities generally require 30–35. A score of 40+ places you in the top ~10% of IB students globally.

How does the IB scale compare to GPA or A-levels?

An IB score of 45 is roughly equivalent to a 4.0 GPA or 3 A* grades at A-level. A score of 40 corresponds to approximately a 3.7–3.9 GPA. A score of 30 is broadly comparable to a 3.0 GPA. Universities admissions offices typically have IB-to-GPA and IB-to-A-level conversion guides, but exact equivalencies vary by institution and program.

What happens if I fail the IB Diploma?

If you do not meet diploma conditions, you receive an IB Certificate for each subject you passed — not the full diploma. You can retake exams during the May or November session. Many universities will consider IB Certificate results for course-by-course credit, even if the full diploma was not awarded. Some schools also accept retake scores, typically with a one-year delay.

IB Grade Calculator — Points & Predicted Score

Calculates IB Diploma total points, TOK/EE bonus points, and diploma qualification status from 6 subject grades.

What Is the IB Diploma Programme?

This IB grade calculator totals your subject scores and TOK/EE bonus points to show your IB Diploma total and whether you qualify. The International Baccalaureate (IB) Diploma Programme is a rigorous two-year pre-university curriculum designed for students aged 16–19. Unlike AP courses — which are standalone exams — the IB Diploma requires six subjects, a 4,000-word Extended Essay (EE), Theory of Knowledge (TOK), and Creativity, Activity, Service (CAS) requirements. This holistic approach is why the IB Diploma is recognized by universities worldwide as strong evidence of academic preparedness.

The IB is taught at more than 5,600 schools in 159 countries. In the US, approximately 1,000 schools offer the IB Diploma. Universities in the US, UK, Canada, Australia, and Europe all accept the IB Diploma — and many grant college credit for Higher Level (HL) subjects with scores of 5, 6, or 7. The IB's grading scale of 1–7 per subject (where 4 is considered "passing" and 7 is exceptional) differs from AP's 1–5 scale and from the US letter grade system.

How the IB Diploma Scoring System Works

The International Baccalaureate (IB) Diploma Programme awards a score from 0 to 45 points. Students study six subjects — one from each of the six IB subject groups — each graded on a scale of 1 (lowest) to 7 (highest), for a maximum of 42 subject points. The remaining 3 points come from the combined performance on Theory of Knowledge (TOK) and the Extended Essay (EE).

The 45-point ceiling is intentionally difficult to reach. Globally, fewer than 1% of diploma candidates score 45. A score of 40 places a student in approximately the top 10%, and 35 is considered a strong, competitive result for most university applications worldwide.

TOK and Extended Essay Bonus Points Matrix

TOK and EE are each graded A (Excellent) through E (Elementary/Failing). The combination determines how many bonus points you earn:

A + A — 3 bonus points (maximum)
A + B or B + A — 2 bonus points
A + C or C + A — 2 bonus points
B + B — 2 bonus points
B + C or C + B — 1 bonus point
C + C — 1 bonus point
D in either — 0 bonus points
E in either — 0 bonus points and automatic diploma failure

A grade of E in TOK or EE is one of the automatic diploma failure conditions, regardless of total points. This means a student who scores 42 subject points but receives an E in the Extended Essay will not be awarded the IB Diploma.

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IB Diploma Requirements — All Conditions Must Be Met

Scoring 24 or more points is necessary but not sufficient for diploma award. All of the following conditions must be met simultaneously:

Total points (subjects + bonus) must be at least 24
No subject grade below 2 in any Higher Level (HL) or Standard Level (SL) course
No grade of 1 awarded in any subject
TOK and EE must not both receive grades of D or E
A grade of E in either TOK or EE is an automatic failure condition
CAS (Creativity, Activity, Service) requirements must be completed

Students who fail the diploma but pass individual subjects receive an IB Certificate for each subject, which many universities accept for course credit.

IB Score Benchmarks and University Requirements

Different universities have different expectations. Here are common IB score thresholds:

40–45 — Oxford, Cambridge, and other top-10 global universities
36–40 — Selective US universities (equivalent to a 3.7–4.0 GPA range)
30–36 — Most US flagship and Canadian universities
28–32 — Australian and European university entry for competitive programs
24 — Minimum for diploma; qualifies for most university admissions, though not competitive programs

If you are also tracking your US-style academic performance, you can use our college GPA calculator alongside your IB score to present a complete academic profile to admissions offices.

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IB vs. AP: Which Is More Recognized?

Both the IB Diploma and AP (Advanced Placement) program are recognized by universities worldwide, but they differ in structure. The IB is a comprehensive two-year program requiring students to study across all subject groups, write a 4,000-word Extended Essay, and complete TOK and CAS requirements. AP courses are standalone and modular — students can take one or many. You can compare IB and AP performance using our AP score calculator.

US universities generally give IB Higher Level (HL) courses more weight than Standard Level (SL). Most universities grant college credit for HL subjects with a grade of 5 or higher, though policies vary. Internationally, the full IB Diploma is often more recognized than individual AP scores for non-US university admissions.

Tips for Improving Your IB Score

Prioritize HL subjects — Higher Level courses carry the same 1–7 grade scale, so strong HL performance has the same point impact but is weighted more heavily in university evaluation
Don't neglect TOK and EE — A grade of B in both is achievable for most students and earns 2 bonus points, potentially making the difference between 30 and 32
Avoid grade 1s at all costs — A single grade of 1 is an automatic diploma failure condition
Aim for grade 4 minimum in every subject — Grades of 2 or 3 are diploma-passable but make a competitive score difficult to reach

IB Grade Calculator

6 Subject Grades

TOK & Extended Essay (Bonus Points)

Your IB Diploma Score