Is a 3.9 GPA Good?
A 3.9 GPA on the unweighted 4.0 scale is roughly an A average — about 94% — and it puts you in the top tier — competitive for the most selective graduate programs, scholarships and honors lists.
- Letter averageA
- Percent equivalent≈94%
- US college average≈3.1
Context that matters more than the number
GPA is read alongside course rigor and trajectory. A 3.9 earned in a demanding major with an upward trend reads better than the same number from an easy schedule that's sliding. Mathematically, raising a 3.9 takes time: one straight-A semester of 15 credits moves a 60-credit GPA by only 0.02 points — which is why starting the climb early beats a senior-year sprint.
Raise it — calculate your exact GPA
Unweighted 4.0 scale (A+ = 4.0, steps of 0.3). Your registrar's number is official.
Common questions
How are letter grades calculated from percentages?
Most US schools map percentages to letters in 10-point bands: 90–100 is an A range, 80–89 a B range, 70–79 a C range, 60–69 a D range, and below 60 an F. Plus/minus splits each band roughly in thirds (e.g. 90–92 = A-, 93–96 = A, 97+ = A+). Individual schools and professors can and do vary the cutoffs.
What's the difference between weighted and unweighted averages?
An unweighted average treats every score equally: add them up, divide by the count. A weighted average multiplies each category by its share of the grade first — homework 20%, midterms 40%, final 40% — which is how most courses actually work. If your syllabus lists category percentages, you need the weighted version.