What Grade Is 20 out of 40?
20 out of 40 is 50% — a F on the standard US scale, a failing score.
- Percentage50%
- Letter gradeF
- Missed20 pts
- For an A (90%)36/40
Score breakdown for a 40-point test
| Score | Percent | Letter |
|---|---|---|
| 36/40 | 90% | A- |
| 32/40 | 80% | B- |
| 28/40 | 70% | C- |
| 20/40 | 50% | F |
How this is calculated
Divide the points earned by the points possible and multiply by 100: 20 ÷ 40 × 100 = 50%. On the common 10-point-band scale that lands in the F range — you'd have needed 36/40 to reach the A band.
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.