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Short answer: This GPA to letter grade chart estimates that, on a common unweighted 4.0 scale, a 3.39 GPA is near a B+, a 3.0 is near a B, a 3.7 is near an A−, and a 4.0 is an A. Schools set their own grade points, percentage cutoffs, weighting rules, and rounding policies.
A GPA is already an average of grade points, so converting it back to one letter grade can hide important details. Two students may both have a 3.4 GPA even though one earned consistent B+ grades and the other earned a mix of A and B grades.
Common GPA to letter-grade chart
| Letter grade | Common grade points | Illustrative midpoint range |
|---|---|---|
| A / A+ | 4.0 | 3.85–4.00 |
| A− | 3.7 | 3.50–3.84 |
| B+ | 3.3 | 3.15–3.49 |
| B | 3.0 | 2.85–3.14 |
| B− | 2.7 | 2.50–2.84 |
| C+ | 2.3 | 2.15–2.49 |
| C | 2.0 | 1.85–2.14 |
| C− | 1.7 | 1.50–1.84 |
| D+ | 1.3 | 1.15–1.49 |
| D | 1.0 | 0.50–1.14 |
| F | 0.0 | 0.00–0.49 |
The ranges above are illustrative midpoint bands for the selected grades, applied to a GPA expressed to two decimal places. This particular chart omits D−; including D− or changing any grade-point value changes the neighboring boundaries. It is not an official conversion rule or a substitute for a transcript. The CalcRange GPA calculator itself includes D− = 0.7 in its course-grade dropdown.
Schools set their own scales. For example, UW–Green Bay’s published grading system assigns AB = 3.5 and BC = 2.5, illustrating why a single plus/minus table cannot represent every institution.
What letter grade is a 3.39 GPA?
A 3.39 GPA is commonly interpreted as roughly a B+ average on an unweighted 4.0 scale. It sits slightly above the common 3.3 value assigned to B+. A transcript, however, reports the actual course grades—not a single converted letter.
The University of Wisconsin–Green Bay, for example, uses a 4.0 system but assigns 3.5 to AB and 2.5 to BC. That illustrates why a calculator should never override the school’s published policy.
How GPA is actually calculated
Formula: GPA = total quality points ÷ total GPA credit hours.
Quality points are the grade-point value multiplied by course credits.
| Course | Credits | Grade points | Quality points |
|---|---|---|---|
| Biology | 4 | 3.7 | 14.8 |
| History | 3 | 3.3 | 9.9 |
| Writing | 3 | 3.0 | 9.0 |
| Total | 10 | — | 33.7 |
33.7 quality points ÷ 10 credits = a 3.37 GPA. A simple average of 3.7, 3.3, and 3.0 would be wrong because Biology carries more credits.
Use the GPA calculator to weight courses by credit hours. The guide to calculating weighted and unweighted GPA explains the full process.
Weighted GPA can be above 4.0
Some high schools add bonus points for honors, Advanced Placement, International Baccalaureate, or other advanced courses. A weighted 4.3 may therefore coexist with an unweighted 3.8. Colleges may recalculate both using their own rules.
Do not label a GPA above 4.0 as an A+ without context. State the scale, course weighting, and whether the value is cumulative or term-specific.
GPA, percentages, and letter grades are not interchangeable
A percentage-to-GPA table is an estimate unless the institution publishes the conversion. An 85% might be a B at one school, an A at another, or part of a completely different grading system. International credential evaluation can require course-by-course review rather than a single formula.
See percentage to GPA conversion for a transparent estimate and its limitations.
Sources and reference policies
Frequently asked questions
Is a 3.5 GPA an A or B?
On many unweighted scales it falls between B+ and A− and is often described as an A−/B+ average. Check the institution’s policy.
Is a 3.39 GPA good?
It commonly represents solid B+ work, but “good” depends on the program, course rigor, trend, and admission context.
Can a GPA be rounded from 3.99 to 4.0?
Only if the school’s official rounding rule allows it. Do not round a transcript value on your own.
Do pass/fail courses affect GPA?
Often they do not, but policies differ. The transcript or registrar explains which credits enter the denominator.
Why is my calculator result different from my transcript?
Common causes include repeated-course rules, excluded courses, transfer credits, course weights, and institution-specific grade points.
This chart is an educational estimate. Your registrar’s published scale is the authoritative source.