What Grade Is 30 out of 30?
30 out of 30 is 100% — an A+ on the standard US scale, an excellent score.
- Percentage100%
- Letter gradeA+
- Missed0 pts
- For an A (90%)27/30
Score breakdown for a 30-point test
| Score | Percent | Letter |
|---|---|---|
| 27/30 | 90% | A- |
| 24/30 | 80% | B- |
| 21/30 | 70% | C- |
| 30/30 | 100% | A+ |
How this is calculated
Divide the points earned by the points possible and multiply by 100: 30 ÷ 30 × 100 = 100%. On the common 10-point-band scale that lands in the A+ range.
Common questions
Do these calculators store my grades?
No. Everything is computed in your browser the moment you press Calculate — nothing is uploaded, saved or seen by anyone else. Refresh the page and it's gone.
What's the difference between weighted and unweighted averages?
An unweighted average treats every score equally: add them up, divide by the count. A weighted average multiplies each category by its share of the grade first — homework 20%, midterms 40%, final 40% — which is how most courses actually work. If your syllabus lists category percentages, you need the weighted version.