18 out of 21 as a percentage
18 out of 21 is 85.71%, a B on the standard grading scale. Passing at both 60% and 70%.
How it's calculated: 18 ÷ 21 = 0.8571, and 0.8571 × 100 = 85.71%.
18/21 on other grading scales
Compare the scalesGrading chart for a 21-question test
Every possible score on a 21-question test, by number wrong. Teachers: open it in the EZ grader to print it.
Questions about 18/21
Is 18 out of 21 a good grade?
Yes. It's a B (85.71%): above average on most US scales and a passing grade everywhere. 19 out of 21 (90.48%) would make it an A−.
Is 18 out of 21 passing?
Yes. 85.71% passes at both 60% (the usual D− cutoff) and 70% (the C cutoff many colleges use for pass/fail and major courses).
What is 18/21 as a GPA?
On a 4.0 scale, a B (85.71%) is worth 3.0 grade points. If your school doesn't use + and − grades, it's a B, worth 3.0. See the full GPA scale.
How much will a 18/21 affect my grade?
It depends on how much the test counts. If it's 10% of your grade and you have a 90% now, a 85.71% takes you to 89.57% (down 0.43 points). If it's worth 20%, you'd land at 89.14%. For a final exam, use the final grade calculator.