Easy Grader

What Grade Is a 21/30?

21/30 = 70%, which is a C (C− on a plus/minus scale). That is 9 wrong out of 30.

70%21 out of 30
Standard
C
Plus / minus
C−
Wrong
9

21 ÷ 30 × 100 = 70%

How to calculate 21 out of 30

21 ÷ 30 × 100 = 70%

Divide the number right by the total and multiply by 100. Teachers usually round to the nearest whole percent, so21/30 is recorded as 70% — a C on the standard 90/80/70/60 scale and a C− on a plus/minus scale. Each question is worth 3.33%, so 9 wrongcost 30 points.

Nearby scores out of 30

  • 19/30 is 63.33% (D)
  • 20/30 is 66.67% (D+)
  • 22/30 is 73.33% (C)
  • 23/30 is 76.67% (C+)

21 out of nearby totals

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.

Frequently asked questions

What grade is a 21/30?

21/30 is 70%, which rounds to 70% — a C on the standard 90/80/70/60 scale and a C− on a plus/minus scale.

What is 21 out of 30 as a percentage?

70%. Divide 21 by 30 and multiply by 100: 21 ÷ 30 × 100 = 70%.

Is 21/30 passing?

Yes. 21/30 rounds to 70%, at or above the usual 60% pass mark. Some classes need a C (70%) or higher to pass.

How many questions were missed on a 21/30?

9 out of 30. Each question is worth 3.33%, so 9 wrong takes 30% off a perfect score.