Easy Grader

What Grade Is an 18/20?

18/20 = 90%, which is an A (A− on a plus/minus scale). That is 2 wrong out of 20.

90%18 out of 20
Standard
A
Plus / minus
A−
Wrong
2

18 ÷ 20 × 100 = 90%

How to calculate 18 out of 20

18 ÷ 20 × 100 = 90%

Divide the number right by the total and multiply by 100. Teachers usually round to the nearest whole percent, so18/20 is recorded as 90% — an A on the standard 90/80/70/60 scale and an A− on a plus/minus scale. Each question is worth 5%, so 2 wrongcost 10 points.

Nearby scores out of 20

  • 16/20 is 80% (B−)
  • 17/20 is 85% (B)
  • 19/20 is 95% (A)
  • 20/20 is 100% (A)

18 out of nearby totals

Grade a whole test of 20

See the full grading chart for 20 questions for every score out of 20, or open the Easy Grader with 20 questions to mark each paper, add half points and use your own scale.

Frequently asked questions

What grade is an 18/20?

18/20 is 90%, which rounds to 90% — an A on the standard 90/80/70/60 scale and an A− on a plus/minus scale.

What is 18 out of 20 as a percentage?

90%. Divide 18 by 20 and multiply by 100: 18 ÷ 20 × 100 = 90%.

Is 18/20 passing?

Yes. 18/20 rounds to 90%, at or above the usual 60% pass mark. Some classes need a C (70%) or higher to pass.

How many questions were missed on an 18/20?

2 out of 20. Each question is worth 5%, so 2 wrong takes 10% off a perfect score.