What Grade Is 80 out of 100?
80 out of 100 is 80% — a B- on the standard US scale, a good score.
- Percentage80%
- Letter gradeB-
- Missed20 pts
- For an A (90%)90/100
Score breakdown for a 100-point test
| Score | Percent | Letter |
|---|---|---|
| 90/100 | 90% | A- |
| 80/100 | 80% | B- |
| 70/100 | 70% | C- |
| 80/100 | 80% | B- |
How this is calculated
Divide the points earned by the points possible and multiply by 100: 80 ÷ 100 × 100 = 80%. On the common 10-point-band scale that lands in the B- range — you'd have needed 90/100 to reach the A band.
Common questions
What GPA do I need for the Dean's List?
Most schools set Dean's List between 3.5 and 3.7 for the semester, with a minimum credit load (often 12+ graded credits). It's a semester GPA, not cumulative — one strong term can make the list even in a rebuilding year. Your school's exact cutoff will be published by the registrar.
Is a 90 an A or an A-?
In plus/minus systems, 90–92 is typically an A- and 93+ is an A, which affects GPA (3.7 vs 4.0). In straight-letter systems, everything from 90 up is simply an A. This calculator shows the plus/minus convention because it's the most common — your syllabus decides which applies to you.