University of Colorado Boulder
GPA Calculator
Calculate your CU Boulder GPA and convert it to percentage using the official University of Colorado plus/minus 4.0 grading scale used on your Buffs transcript.
CU Boulder GPA Calculator
Add each course with its letter grade and credit hours. Calculation uses CU's official grade-point values.
Add Your Courses
CU Boulder uses a plus/minus 4.0 scale. There is no A+, so the highest grade point is A = 4.00.
| Course | Grade | Credits | Actions |
|---|
How CU Boulder GPA Is Calculated
CU multiplies each grade point by credit hours to get grade points earned, then divides total grade points by total graded credit hours.
📝 Worked Example
A sample CU Boulder semester with three courses:
| Course | Credit Hours | Grade | Grade Point | Grade Points Earned |
|---|---|---|---|---|
| CSCI 1300 | 4.0 | A | 4.00 | 4 × 4.00 = 16.00 |
| MATH 1300 | 5.0 | B+ | 3.30 | 5 × 3.30 = 16.50 |
| WRTG 1150 | 3.0 | C− | 1.70 | 3 × 1.70 = 5.10 |
| Total | 12.0 | — | — | 37.60 |
Plugging into the formula:
CU Boulder GPA to Percentage Converter
Convert your 4.0-scale CU Boulder GPA to an equivalent percentage instantly.
Convert GPA → Percentage
Enter any CU Boulder GPA between 0.0 and 4.0.
The Conversion Formula
CU Boulder uses a 4.0 scale, so:
Example: If your GPA is 3.5, then Percentage = 3.5 × 25 = 87.50%.
Official CU Boulder Grading Scale
Grade-point values used to compute semester and cumulative GPA, sourced from the University of Colorado grading system and CU Boulder Office of the Registrar.
📘 University of Colorado Plus/Minus Grade Points
Note: A '+' adds 0.3 and a '-' subtracts 0.3. Grades of A+, F+, F- are not allowed.
| Letter Grade | Grade Point | Definition |
|---|---|---|
| A | 4.00 | Superior / Excellent |
| A− | 3.70 | Excellent |
| B+ | 3.30 | Good |
| B | 3.00 | Good / Better than Average |
| B− | 2.70 | Good |
| C+ | 2.30 | Above Average |
| C | 2.00 | Competent / Average |
| C− | 1.70 | Below Average |
| D+ | 1.30 | Minimum Passing |
| D | 1.00 | Minimum Passing |
| D− | 0.70 | Minimum Passing |
| F | 0.00 | Failure, no credit allowed |
📌 Grades Excluded from GPA
The following marks carry no grade points and are not counted in graded credit hours: P (Pass), NC (No Credit), W (Withdrawal), I (Incomplete), IW (Incomplete/Withdrawal), and IF until resolved.
An Incomplete (I) does not affect your GPA until a final letter grade is recorded. If it remains unresolved, it may convert to an F and then count toward your GPA.
CU Boulder GPA — Frequently Asked Questions
What GPA scale does the University of Colorado Boulder use?
CU Boulder uses the University of Colorado 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. A '+' adds 0.3 and a '-' subtracts 0.3 from the base grade.
Does CU Boulder have an A+ grade?
No. Under the University of Colorado grading system, grades of A+, F+, and F− are not allowed. The highest grade-point value is A = 4.0, so your cumulative GPA cannot exceed 4.0.
How do I convert my CU Boulder 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%.
Do Pass/Fail and Incomplete grades affect my GPA?
A Pass (P) grade carries no grade points and is excluded from your GPA. An Incomplete (I) does not affect your GPA until a final letter grade is recorded; if left unresolved it may convert to an F and then count in your GPA.
Can I replace a low grade at CU Boulder?
Yes. Eligible undergraduate courses may qualify for grade replacement, which removes the earlier grade from your cumulative GPA calculation. Check the Registrar's grade replacement policy for eligibility rules.
Reference: All grading data verified against the CU Boulder Undergraduate Catalog — Credits & Grading and the CU Boulder Office of the Registrar.