B- GPA: what is an B- worth?
On the standard US 4.0 scale, an B- is worth 2.7 grade points (roughly 80–82%). Enter a percentage below to see its letter and GPA.
B- on the 4.0 scale
An B- maps to 2.7 grade points and a percentage of about 80–82%. Your GPA is the credit-weighted average of these points across all your courses.
Full letter-to-GPA table
| Letter | GPA points |
|---|---|
| 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 |
| F | 0.0 |
How an B- affects your GPA
One B- in a 3-credit course contributes 2.7 × 3 = 8.1 grade points. Combine all courses with the GPA calculator to see your overall GPA.
B- at 2.7: the warning track, not the wall
A B- is where a transcript starts whispering rather than shouting. One is noise; a pattern of 2.7s pulls a cumulative GPA below the 3.0 screens quickly, and in many majors a B- in a core course is the informal signal to shore up fundamentals before the next course in the sequence builds on them. Some competitive programmes also require better than B- in named prerequisites — check your department's list before shrugging one off.
Diagnose the B- honestly, because its causes differ: a strong semester with one collapsed final is a technique problem; steady 80s all term is a depth problem. The first is fixed with exam rehearsal, the second with earlier, spaced studying. Arithmetic-wise, a 2.7 needs a 3.3 of equal credits to average back to 3.0. If the course is foundational to your major, a voluntary retake — where policy allows grade replacement — often pays for itself twice: in GPA and in every later course that leans on the material.
Frequently asked questions
How many GPA points is an B-?
An B- is worth 2.7 grade points on the 4.0 scale.
What percentage is an B-?
Typically about 80–82%, though exact cut-offs vary by school.
How do I turn letter grades into a GPA?
Multiply each course’s points by its credits, sum, and divide by total credits — or use the GPA calculator.
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