4.0 vs 4.33 GPA Scale Explained
Understanding the difference, and when it actually matters.
Most Canadian universities cap their GPA scale at 4.0 — A and A+ are treated as equal, both worth 4.0. A smaller group of institutions, including UBC, SFU, and Université Laval, use a 4.33 scale, where A+ earns a distinct 4.33, a half-step above A’s 4.0.
The difference is small in absolute terms, but it matters in specific situations — particularly when GPAs are compared across institutions for scholarships, exchanges, or graduate admissions.
Side-by-Side Comparison
| Percentage | Letter Grade | 4.0 Scale | 4.33 Scale |
|---|---|---|---|
| 90-100% | A+ | 4.0 | 4.33 |
| 85-89% | A | 4.0 | 4.0 |
| 80-84% | A- | 3.7 | 3.7 |
| 76-79% | B+ | 3.3 | 3.3 |
| 72-75% | B | 3.0 | 3.0 |
| 60-63% | C | 2.0 | 2.0 |
As the table shows, the only difference between the two scales is at the very top: A+ is worth more on the 4.33 scale. Every other grade band — A through F — converts identically. This is the key insight: the scales aren’t fundamentally different systems, they just disagree on how to reward a perfect A+.
Converting Between the Two Scales
There are two common approaches, depending on what you’re trying to do:
1. Capping at 4.0 (most common for comparisons): Since only the A+ band differs, the simplest conversion from 4.33 to 4.0 is to cap any value above 4.0 at 4.0. A cumulative GPA of 4.15 becomes 4.0. A GPA of 3.6 stays 3.6 — it was never affected by the difference in the first place.
This capping approach is what the calculator above uses for its 4.0-equivalent display.
2. Proportional scaling (less common, can be misleading): Multiplying by 4.0 ÷ 4.33 (≈ 0.924) scales the entire GPA down proportionally. A 4.33 becomes exactly 4.0, but a 3.6 becomes about 3.33 — even though a B+/A- average means the same thing regardless of which scale it was recorded on.
The proportional method is sometimes used by institutions that want a single formula for all values, but it can understate a strong GPA that simply didn’t include many A+ grades. The capping method is generally more representative of actual academic performance.
When Does This Actually Matter?
For most day-to-day purposes — checking your academic standing, tracking your progress toward a degree — the scale your university uses doesn’t matter much; you just work within it. The difference becomes relevant in a few specific situations:
- Graduate school applications — especially to US institutions, which often ask applicants to convert to a 4.0 scale and may not know how to interpret a 4.33
- Scholarship applications that specify a minimum GPA (e.g. “3.5 or higher”) without specifying which scale
- Comparing your own GPA to a friend at a different university, out of curiosity or for peer benchmarking
In all these cases, it’s often a good idea to present both numbers — your native-scale GPA and the 4.0-equivalent — along with a note about which scale your institution uses. This avoids ambiguity and lets the reader interpret it correctly.
See It in Action
The calculator above shows both values automatically for any university that doesn’t use a plain 4.0 scale. Try it with UBC (4.33 scale) to see your native GPA alongside its 4.0-equivalent, or explore what different GPA ranges generally mean once you have your number.
This page describes general conventions for comparing 4.0 and 4.33 GPA scales. Specific institutions, scholarship programs, and graduate schools may use their own conversion methods — always check the specific requirements of the program you’re applying to.