On the standard US 4.0 grading scale, that is an excellent score, sitting in the A− range. GPA value: 3.7.
Try other numbers
Excellent work — almost a clean A.
18 out of 20 as a Grade — Percentage, Letter, and What It Means
Wondering what 18 out of 20 means as a grade? It works out to 90%, which is an excellent score, sitting in the A− range. On a 4.0 GPA scale, that maps to 3.7 grade points. Below you can play with the numbers, see the exact math, and compare nearby scores.
How we calculated it
Converting 18 out of 20 to a percentage uses the standard grade formula:
(18 ÷ 20) × 100 = 90%That 90% then maps to a letter grade of A− on the standard US 4.0 scale, worth 3.7 grade points.
What 18/20 means
A score of 18 out of 20 (90%) is read the same way whether it shows up on a quiz, a homework set, or an exam — but the weight changes with context. In high school, this counts as a A− on the report card and feeds directly into your GPA at 3.7 points. In a college course, the same 90% still posts as a A−, though instructors may curve based on the class average. On a standardized exam where each question is worth the same, the 2 missed items are usually the best place to focus your review.
Nearby scores
Compare 18/20 to similar scores on a 20-point scale:
Is 18/20 a good grade?
18/20 (90%) is an excellent grade. An A− still counts as an A on most US transcripts and signals strong command of the material. A small lift in the trickier sections would move you to a perfect A.
How to improve beyond 18 out of 20
- • Review the 2 questions you missed and learn why each answer was wrong.
- • Practice the weaker topics with extra sample questions.
- • Watch your timing so you’re not rushing the last few questions.
- • Double-check your answers before submitting.
Even one more correct answer moves you to 95%.
Common Questions About 18 Out of 20 Grade
What letter grade is 18 out of 20?
18 out of 20 is 90%, which is a A− on the standard US 4.0 grading scale.
What percentage is 18/20?
18 divided by 20 equals 0.9000, or 90% when expressed as a percentage.
Is 18/20 a good grade?
18/20 (90%) is an excellent score, sitting in the A− range, so whether it counts as "good" depends on the class and your goals — most US schools treat anything in the B range or higher as a good result.
How do I convert 18/20 to a percentage?
Divide the score by the total and multiply by 100: (18 ÷ 20) × 100 = 90%.
What is the GPA for 18 out of 20?
A A− is worth 3.7 grade points on the standard US 4.0 GPA scale.
How many did I miss if I got 18 out of 20?
You answered 18 correctly out of 20 questions, so you missed 2.