Test Grade Calculator
Enter your marks obtained and total marks — get your percentage, letter grade, GPA equivalent, and pass/fail status instantly. Grade one test or all your subjects at once.
How to Use the Test Grade Calculator
This calculator works differently from a wrong-answers grader. You enter your actual marks the score you got and the total available and it instantly shows your percentage, letter grade, GPA, and pass/fail verdict based on your school's passing threshold.
What Is a Test Grade Calculator?
A test grade calculator converts your raw score into a percentage, letter grade, and GPA value — instantly. You enter the marks you got and the total marks available, and the calculator does everything else: the division, the percentage, the letter grade lookup, and the GPA conversion.
This tool goes beyond a basic percentage converter. It shows your GPA on the 4.0 scale, calculates exactly how many marks you still need if you're below the passing threshold, and includes a full multi-subject section so you can find your overall grade across all your tests in one place.
"Whether you scored 38/50 or 76/100, this test grade calculator converts any marks into a percentage, letter grade, and GPA equivalent in under a second — for any subject, any scale."
The Test Grade Formula
Every test grade comes from this formula:
Test Grade % = (Marks Obtained ÷ Total Marks) × 100
Example: 38 out of 50 → (38 ÷ 50) × 100 = 76% — B grade, GPA 3.0. Another example: 15 out of 20 → (15 ÷ 20) × 100 = 75% — C grade, GPA 2.0.
Full Test Grading Scale with GPA
| Percentage | Letter Grade | GPA (4.0) | Description |
|---|---|---|---|
| 97–100% | A+ | 4.0 | Perfect |
| 90–96% | A | 4.0 | Excellent |
| 87–89% | B+ | 3.3 | Very Good |
| 80–86% | B | 3.0 | Good |
| 77–79% | C+ | 2.3 | Above Average |
| 70–76% | C | 2.0 | Average — Passing |
| 60–69% | D | 1.0 | Below Average |
| 0–59% | F | 0.0 | Failing |
What Is a 75 in Letter Grade?
A 75% is a C grade with a GPA of 2.0. It sits in the average range and is passing in most schools. For example: 15/20 = 75% = C, or 75/100 = 75% = C. Schools with a 70% minimum passing threshold accept 75% — it sits safely above it.
Common Test Scores at a Glance
| Score | Percentage | Letter Grade | GPA |
|---|---|---|---|
| 20/20 | 100% | A+ | 4.0 |
| 18/20 | 90% | A | 4.0 |
| 17/20 | 85% | B | 3.0 |
| 15/20 | 75% | C | 2.0 |
| 14/20 | 70% | C | 2.0 |
| 38/50 | 76% | B | 3.0 |
| 45/75 | 60% | D | 1.0 |
Who Is the Test Grade Calculator For?
Anyone who needs to know what a mark actually means — not just the raw number itself.
- Students — Enter your marks the moment you get your paper back. Know your letter grade, GPA points, and pass/fail status before the gradebook is even updated.
- Teachers — Use the multi-subject table to quickly calculate grades across all subjects. Enter obtained and total marks per subject and see the overall result in one click.
- Parents — 38 out of 50 doesn't mean much on its own. 76%, a B grade, and a GPA of 3.0 gives you a clear picture of where your child actually stands.
- International students — Convert marks from any system into US letter grades and GPA values for college applications, transfers, or scholarship requirements.
More Free Grade Calculators
Need a different type of calculation? All tools below are 100% free and work instantly.
Related Articles You May Find Useful
Learn more about test grades, passing scores, and how to improve your results.