How to Convert Percentages to Letter Grades Easily
Most teachers, students, and parents deal with grades every day. QuickGrade But sometimes it’s confusing to know what a percentage score really means in a letter grade like A, B, C, or F. In this article, I’ll show you a simple way to do this conversion in just a few steps. This method works for quizzes, tests, report cards, or even when you’re just curious about what your score really says.
Let’s break it down like you’re talking to a friend.
Step 1 — Get Your Percentage
First, you need the percentage score. If your teacher already gives it, great. But if you have raw numbers, use this small formula:
Step 2 — Use a Simple Letter Grade Scale
Now that you have a percentage, you match that number to a letter grade. Many schools use a standard range like this:
This is one of the most common ways to turn a percentage into a letter grade.
Different places sometimes add plus (+) or minus (‑) grades too. For example:
You don’t need all these if you want it simple, but it helps if your school uses them.
Step 3 — See the Letter

Once you know the percentage and the scale your school uses, just match them.
Example: 90% falls in the A range. So the letter grade is A.
Quick Tips to Make It Easy
How to Handle Non-Standard Grading Scales
Some schools or teachers might use non-standard grading scales, like a 5-point grading scale or a curve system. For these, the process is the same — you just need to adjust your scale.
Example: If a school uses a 5-point system, you may have something like:
5 = A
4 = B
3 = C
2 = D
1 = F
Adjusting your grade scale ensures fairness and accuracy while still following the general idea of turning percentages into letter grades.
Converting Letter Grades Back to Percentages
It’s also useful to know how to convert a letter grade back into a percentage range. This might come in handy when you’re trying to figure out the minimum grade needed to pass or excel in a course.
Example:
This helps you understand what each grade really represents.
FAQs
CONCLUSION
Converting percentages to letter grades doesn’t have to be complicated. With the right scale, a simple formula, and a few helpful tips, you can do it in no time. Whether you’re a teacher grading assignments or a student keeping track of your progress, this process is quick, simple, and stress-free.
Remember, the key is to understand your grading scale, and you’ll be able to quickly and easily determine your letter grade from your percentage score. Happy grading!