How to calculate 18 out of 30
18 ÷ 30 × 100 = 60%
Divide the number right by the total and multiply by 100. Teachers usually round to the nearest whole percent, so18/30 is recorded as 60% — a D on the standard 90/80/70/60 scale and a D− on a plus/minus scale. Each question is worth 3.33%, so 12 wrongcost 40 points.
Nearby scores out of 30
18 out of nearby totals
- 18 out of 28 is 64.29% (D)
- 18 out of 29 is 62.07% (D−)
- 18 out of 31 is 58.06% (F)
- 18 out of 32 is 56.25% (F)
Grade a whole test of 30
See the full grading chart for 30 questions for every score out of 30, or open the Easy Grader with 30 questions to mark each paper, add half points and use your own scale.