What is an 18 out of 20 Grade? Calculate Percentage & Letter Grade
Quick Answer: Getting 18 out of 20 on a test or assignment is a 90%. This percentage is an A- letter grade in most US school systems, marking the threshold for an “A” grade and indicating excellent performance.
An 18/20 is a fantastic score and something to be proud of. It shows a strong mastery of the subject matter. Let’s break down exactly what this grade means for you.
Calculating Your 18/20 Score
The math to convert your score into a percentage is straightforward. You divide the score you received (18) by the total possible score (20) and then multiply by 100.
Grade Percentage Calculator
You can use our main Grade Percentage Calculator to find the percentage for any score.
What Letter Grade is a 90%?
A 90% is the classic entry point into the “A” category on most grading scales. It’s a clear indicator of high achievement.
| Letter Grade | Percentage Range | Is 18/20 (90%) in this range? |
|---|---|---|
| A | 93-96% | No |
| A- | 90-92% | Yes |
| B+ | 87-89% | No |
Is an 18 out of 20 a Good Grade?
Yes, an 18 out of 20 is an excellent grade. It means you only missed 10% of the available points. This score will significantly boost your course grade and your GPA. It demonstrates that you are not only understanding the material but mastering it. To improve even further, take a look at the two points you missed to see if you can identify a weak spot to strengthen for the final exam.
Frequently Asked Questions (FAQ)
How many points did I need for a solid A?
For a solid “A” (typically 93%), you would have needed to score 18.6 out of 20. Since most assignments use whole numbers, a score of 19 out of 20 (95%) would have been required to secure a solid A.
What is the GPA for an A- grade?
On a standard 4.0 scale, an A- grade is worth 3.7 grade points. This is a high value that contributes very positively to your cumulative GPA. For a detailed analysis of your specific situation, try our GPA Calculator.