Test Score Calculator
Enter your points earned and total points to instantly see your percentage and letter grade.
Standard Letter Grade Scale
| Percentage | Letter Grade | GPA Points |
|---|---|---|
| 93–100% | A | 4.0 |
| 90–92% | A− | 3.7 |
| 87–89% | B+ | 3.3 |
| 83–86% | B | 3.0 |
| 80–82% | B− | 2.7 |
| 77–79% | C+ | 2.3 |
| 73–76% | C | 2.0 |
| 70–72% | C− | 1.7 |
| 67–69% | D+ | 1.3 |
| 60–66% | D | 1.0 |
| Below 60% | F | 0.0 |
Frequently Asked Questions
How do I convert a test score to a percentage?
Divide your points earned by the total points possible, then multiply by 100. Formula: Percentage = (Points Earned ÷ Total Points) × 100. Example: 42 out of 50 points = (42 ÷ 50) × 100 = 84%. This is the universally accepted method for calculating test percentages in US schools.
What letter grade is 70%, 80%, 90%?
Standard US grading scale: 93–100% = A, 90–92% = A−, 87–89% = B+, 83–86% = B, 80–82% = B−, 77–79% = C+, 73–76% = C, 70–72% = C−, 67–69% = D+, 63–66% = D, 60–62% = D−, below 60% = F. Note that individual instructors and schools may use slightly different cutoffs — always check your syllabus.
Is 70% passing?
In most US high schools and colleges, 60% (D−) is the minimum passing grade for general credit. However, 70% (C−) is often required for major courses, prerequisites, or graduation requirements. Graduate schools typically require 80% (B) minimum to pass. Some programs set 75% as the minimum passing score, particularly in nursing, pharmacy, and other professional programs. Always verify the passing threshold in your specific course syllabus.
How do curved grades work?
Grade curving adjusts raw scores to account for exam difficulty. Common methods: (1) Add a flat number of points to all scores (e.g., +5 points). (2) Scale so the highest score becomes 100% (divide all scores by the top score × 100). (3) Set a target class average and adjust all scores proportionally. (4) Drop the lowest score. This calculator uses raw scores without a curve — if your professor curves grades, apply the curve to your score first.