Purdue GPA scale and grading policy
Quick answer: Purdue University uses the standard 4.0 scale with +/− grades (a = 4.0, a- = 3.7, b+ = 3.3). Purdue admission uses your high school GPA as reported. Honors and AP weighting is reviewed contextually alongside course rigor.
| Metric | Purdue Standard |
|---|---|
| Typical admit GPA | 3.5 - 3.9 (West Lafayette campus) |
| Good standing minimum | 2.0 |
| Dean's List threshold | 3.5+ for Semester Honors |
| Scale type | Standard 4.0 scale with +/− grades (A = 4.0, A- = 3.7, B+ = 3.3). |
How Purdue recalculates GPA for admission
Purdue admission uses your high school GPA as reported. Honors and AP weighting is reviewed contextually alongside course rigor. The number you submit on your transcript and the number Purdue uses in its admission decision may differ. Use the calculator above to model both — switch the preset to match Purdue's policy.
Fall 2024 West Lafayette admit GPA (middle 50%)
3.65 - 3.95 unweighted
Source: Purdue Office of Admissions Common Data Set 2024
Maintaining a good Purdue GPA
- First-Year Engineering (FYE) is the engineering gateway. Direct admit to a specific engineering discipline requires a 3.5+ GPA after freshman year, plus completing MA 165, CHM 115, ENGR 131, and ENGR 132 with grades of C or better in each.
- Grade replacement caps at 18 credits / 6 courses. Repeat a course, and the new grade fully replaces the old in cumulative GPA — but only up to 18 credits total across your degree. Use this on your highest-credit failures first for the biggest lift.
- Dean's List threshold is stricter than peers. Purdue requires a 3.8+ semester GPA on 15+ graded credits — most state flagships use 12 credits. The 15-credit floor often surprises engineering students taking lighter loads after freshman year.
- Boilermaker tuition freeze conditional on 2.0+. The frozen rate you enter with stays — but only if your GPA stays above 2.0 every semester. One semester below 2.0 can cost you the freeze and add thousands per year.
Admit-range and policy data verified against Purdue's official admissions page.