What Grade Is 20 out of 20?
20 out of 20 is 100% — an A+ on the standard US scale, an excellent score.
- Percentage100%
- Letter gradeA+
- Missed0 pts
- For an A (90%)18/20
Score breakdown for a 20-point test
| Score | Percent | Letter |
|---|---|---|
| 18/20 | 90% | A- |
| 16/20 | 80% | B- |
| 14/20 | 70% | C- |
| 20/20 | 100% | A+ |
How this is calculated
Divide the points earned by the points possible and multiply by 100: 20 ÷ 20 × 100 = 100%. On the common 10-point-band scale that lands in the A+ range.
Common questions
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.
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.