IB to GPA Converter

Each IB subject score (1–7) maps to a corresponding GPA value on the 4.0 scale. A score of 7 equals 4.0, 6 equals 3.7, 5 equals 3.3, 4 equals 3.0, 3 equals 2.3, 2 equals 1.7, and 1 equals 1.0. The unweighted GPA is the average of all subject GPA equivalents, while the weighted GPA adds a 0.3 bonus for Higher Level (HL) subjects. See also our Weighted GPA Calculator.

Unweighted GPA treats all subjects equally, regardless of whether they are HL or SL. Weighted GPA recognises the additional difficulty of Higher Level courses by adding a 0.3 point bonus to each HL subject's GPA equivalent before averaging — similar to how weighted GPAs work for AP courses in the US system.

An IB total of 38–45 points typically corresponds to a weighted GPA above 3.7 — competitive for top US universities. A score of 30–37 generally maps to the 3.0–3.7 range, and anything below 24 may fall under a 2.5 GPA equivalent. Bonus points from Extended Essay and TOK can push your total above 42.

Most US universities do not require a formal conversion — admissions officers are familiar with the IB grading scale (1–7) and evaluate it directly. However, converted GPA figures are useful for scholarship applications, self-assessment, and comparing yourself with domestic applicants who report on a 4.0 scale. You might also find our calculate US GPA (4.0 Scale), Letter Grade & Grade Description — German Grade to GPA Converter useful.

The IB awards up to 3 bonus points for the combination of Extended Essay (EE) and Theory of Knowledge (TOK). This converter adds those points to your Total IB Points tally. While bonus points are not typically factored into a direct GPA conversion, a higher total point score reflects stronger academic performance overall.

The maximum IB Diploma score is 45 points — 42 from six subjects (each scored 1–7) plus 3 bonus points from EE and TOK. A perfect 45 corresponds to a 4.0 GPA (or slightly above on a weighted scale). Scoring 40 or above places a student in approximately the top 5% of IB candidates worldwide.

Most US universities request your unweighted GPA on a 4.0 scale for standardised comparison. However, you can mention your weighted GPA in additional information sections to highlight the rigour of your HL courses. When in doubt, check the specific application instructions for each university you are applying to.

Yes — a score of 4 in an IB subject is considered a satisfactory pass and is the minimum recommended for most subjects to earn the IB Diploma. It converts to approximately a 3.0 GPA (B equivalent). Scores of 5, 6, or 7 are considered strong and map to the B+/A range on the US scale.