USA · 4.0 Scale

Oregon State University
GPA Calculator

Calculate your OSU GPA and convert it to percentage using the official plus/minus 4.0 grading scale used on your Beaver transcript.

Tool 1

OSU GPA Calculator

Add each course with its letter grade and credits. Calculation uses OSU's official grade-point values.

Add Your Courses

OSU uses a plus/minus 4.0 scale. There is no A+, and OSU truncates the final GPA to two decimals.

The Math

How OSU GPA Is Calculated

OSU multiplies each grade point by credits to get total points, then divides total points by total graded credits.

OSU GPA Formula
\[ \text{GPA} = \frac{\displaystyle\sum \text{Total Points}}{\displaystyle\sum \text{Total Credits}} = \frac{\displaystyle\sum (\text{Grade Point} \times \text{Credits})}{\displaystyle\sum \text{Graded Credits}} \]
Total PointsGrade point value × credits for each course
Total CreditsCredits in which A, B, C, D, or F was received (excludes P, N, W, S, U, etc.)

📝 Worked Example

The official OSU example from Academic Regulation 19:

CreditsGradeGrade PointTotal Points
1A4.01 × 4.0 = 4
2B3.02 × 3.0 = 6
3C2.03 × 2.0 = 6
4D1.04 × 1.0 = 4
5F0.05 × 0.0 = 0
15——20

Plugging into the formula:

\[ \text{GPA} = \frac{20}{15} \approx \mathbf{1.33} \]
Tool 2

OSU GPA to Percentage Converter

Convert your 4.0-scale OSU GPA to an equivalent percentage instantly.

Convert GPA → Percentage

Enter any OSU GPA between 0.0 and 4.0.

The Conversion Formula

OSU uses a 4.0 scale, so:

\[ \text{Percentage} = \text{GPA} \times 25 \quad \text{or equivalently} \quad \text{Percentage} = \left(\frac{\text{GPA}}{4.0}\right) \times 100 \]

Example: If your GPA is 3.5, then Percentage = 3.5 × 25 = 87.50%.

Reference

Official OSU Grading Scale

Grade-point values used to compute term and cumulative GPA, sourced from the OSU Office of the Registrar (Academic Regulations 17–19).

📘 OSU Plus/Minus Grade Points

Note: OSU has no A+ and truncates the final GPA to two decimals (no rounding up).

Letter GradeGrade PointNotation
A4.0Exceptional
A−3.7—
B+3.3—
B3.0Superior
B−2.7—
C+2.3—
C2.0Average
C−1.7—
D+1.3—
D1.0Inferior
D−0.7—
F0.0Failure

📌 Grades Excluded from GPA

The following marks carry no grade points and are disregarded in GPA computation: I (Incomplete), W (Withdrawal), P (Pass), N (No Credit), R (Thesis in Progress), S (Satisfactory), U (Unsatisfactory), G (Reserved for Graduate Credit), TR (Transfer), AUD (Audit), WAU, and WC.

Only credits earning A, B, C, D, or F (and their plus/minus variants) count toward total graded credits and grade points.

Got Questions?

OSU GPA — Frequently Asked Questions

What GPA scale does Oregon State University use?

OSU uses a plus/minus 4.0 grade-point scale: A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, D− = 0.7, and F = 0.0. There is no A+.

Does OSU round my GPA?

No. OSU does not round up — it truncates the GPA after two decimal places to uphold minimum GPA standards. For example, a calculated 3.499 is recorded as 3.49.

How do I convert my OSU GPA to a percentage?

Use Percentage = GPA × 25 (equivalent to (GPA ÷ 4.0) × 100). For example, a GPA of 3.5 converts to 87.5%.

Which grades are left out of my OSU GPA?

Marks of I, W, P, N, R, S, U, G, TR, AUD, WAU, and WC carry no grade points and are disregarded in the GPA calculation. Only A, B, C, D, and F grades count toward total credits.

What is the OSU honor roll GPA?

Each term, OSU publishes an honor roll of undergraduate and postbaccalaureate students who complete at least 6 graded credits with a term GPA of 3.50 or higher.

Reference: All grading data verified against OSU Office of the Registrar — Grading System (Academic Regulations 17–19).