FREE Average Grade Calculator for all Classes
Enter multiple percentage scores and calculate your grade average.
Average Grade Calculator — See Your Real Standing Across Every Score
One test doesn't tell you much. Five tests tell you everything. When you've got a string of scores — 78, 91, 84, 69, 88 — the number that actually matters is the one in the middle: your average.
This free average grade calculator gives you that number. Enter every score — tests, quizzes, assignments, projects, homework — and see your average percentage, letter grade, highest score, and lowest score in one result. No adding columns of numbers in your head. No spreadsheet.
Whether you're a student tracking your progress through a semester, a teacher calculating class averages, or a parent checking overall performance — enter your numbers above and get the answer instantly.
How to Calculate Your Average Grade
The average — also called the mean — is the simplest grade calculation there is. Add everything up, divide by how many scores you have. That's the whole method.
The steps in plain language:
- Add all your percentage scores together to get the total
- Count how many scores you entered
- Divide the total by that count
- The result is your average percentage — convert it to a letter grade using the scale below
The calculator above does all four steps at once — and adds your highest and lowest score so you can see your full range, not just the middle.
When the Average Changes the Picture — Real Situations
A single score can mislead you in either direction. The average is where the truth lives. Three situations where calculating it made the difference:
Sara panicked after a 62% on one chemistry test. But she entered all five test scores — 88, 91, 62, 85, 90 — and saw her average was 83.2% — a B. One bad day hadn't sunk her semester. The average gave her perspective the single score couldn't.
Ms. Okafor needed each student's average across 6 weekly spelling quizzes for report cards. Instead of a calculator and notepad per child, she entered each set of scores and read the average and letter grade directly. A full class of report card averages done in one sitting.
Daniel thought he was doing fine — recent scores felt strong. But averaging all 8 assignment grades showed 74.5% — a C. The early low scores were still dragging him down. Knowing the real average, he focused on remaining coursework to pull it up before finals.
Grade Scale — Turn Your Average Into a Letter Grade
Once you have your average percentage, this standard US grading scale tells you the letter grade and what it means. Your school may use a slightly different scale — always follow your official grading policy for anything that affects your transcript or GPA.
| Average Percentage | Letter Grade | GPA (4.0) | Standing |
|---|---|---|---|
| 93–100% | A / A+ | 4.0 | Excellent |
| 90–92% | A− | 3.7 | Very strong |
| 87–89% | B+ | 3.3 | Very good |
| 83–86% | B | 3.0 | Good — above national average |
| 80–82% | B− | 2.7 | Good |
| 77–79% | C+ | 2.3 | Above average |
| 73–76% | C | 2.0 | Average |
| 70–72% | C− | 1.7 | Average |
| 60–69% | D | 1.0 | Passing |
| Below 60% | F | 0.0 | Failing |
Average vs Weighted Grade vs Median — Which Do You Need?
This is the most important thing to understand before trusting your average. An average (mean) grade treats every score as equal. A weighted grade does not. The median is different again.
If your quiz scores all count the same toward your grade — use the average. But if your syllabus says the final exam is worth 40% and quizzes are worth 10% total, a simple average gives the wrong answer, and you need the Weighted Grade Calculator.
| Calculation | How It Works | Use It When |
|---|---|---|
| Average (Mean) Grade | Add all scores, divide by the count | Every score has equal importance — quizzes, weekly tests, practice sets |
| Weighted Grade | Multiply each score by its weight, then add | Categories carry different weights — final 50%, homework 20% |
| Median Grade | The middle score when sorted in order | You want the typical score, ignoring extreme highs or lows |
| Percentage Grade | Divide obtained marks by total, times 100 | Converting a single test's raw marks into a percentage |
Average Grade Examples — Common Score Combinations Solved
These are the score combinations students and teachers look up most. Find yours below — or enter any scores into the calculator above for an instant answer.
| Scores | Total | Count | Average | Grade |
|---|---|---|---|---|
| 90, 80 | 170 | 2 | 85% | B |
| 70, 90 | 160 | 2 | 80% | B− |
| 75, 85 | 160 | 2 | 80% | B− |
| 80, 85, 90 | 255 | 3 | 85% | B |
| 90, 80, 70 | 240 | 3 | 80% | B− |
| 85, 90, 95 | 270 | 3 | 90% | A− |
| 92, 88, 95 | 275 | 3 | 91.67% | A− |
| 100, 90, 80 | 270 | 3 | 90% | A− |
| 60, 72, 68 | 200 | 3 | 66.67% | D |
| 70, 75, 80, 85 | 310 | 4 | 77.5% | C+ |
| 80, 80, 80, 80 | 320 | 4 | 80% | B− |
| 85, 90, 78, 92 | 345 | 4 | 86.25% | B |
| 90, 85, 88, 92, 95 | 450 | 5 | 90% | A− |
| 75, 80, 85, 70, 90 | 400 | 5 | 80% | B− |
| 88, 91, 62, 85, 90 | 416 | 5 | 83.2% | B |
| 100, 95, 90, 85, 80, 75 | 525 | 6 | 87.5% | B+ |
| 95, 100 | 195 | 2 | 97.5% | A+ |
| 65, 70 | 135 | 2 | 67.5% | D |
| 50, 60, 70 | 180 | 3 | 60% | D |
| 95, 85, 75, 65 | 320 | 4 | 80% | B− |
Don't see your exact scores? Enter any combination into the calculator above — it handles two scores or twenty, and shows your average, letter grade, highest, and lowest instantly.
Who Uses the Average Grade Calculator
Reach for this tool any time you have multiple coursework scores of equal importance and want one clear number:
Average your test scores, quiz grades, assignment marks, project results, or practice exams to see where your coursework really stands this semester.
Calculate class averages, individual student averages across weekly quizzes, or overall assessment scores for report cards.
See your child's average across a set of tests to understand overall performance — not just one result in isolation.
Frequently Asked Questions
Grade Guides — Understand and Improve Your Average
The calculator gives you the number. These guides help you raise it:
Average grade formula and letter grade scale reviewed for accuracy against the standard A–F grading system used by most US K–12 schools and colleges. Average (mean) calculation follows standard arithmetic used in educational assessment.