Grade Calculator
Calculate your course result using weighted averages with this tool. It handles numeric scores and letter grades alike, and it can also tell you what you must achieve on upcoming work to reach a target overall grade.
Final Grade Calculator
Determine the score you need on the final test to secure a specific course grade. The calculator works with letter marks, percentages, and any other numeric format you provide.
The calculators above use the following letter grades and their typical corresponding numerical equivalents based on grade points.
| Letter Grade | GPA | Percentage |
| A+ | 4.3 | 97-100% |
| A | 4 | 93-96% |
| A- | 3.7 | 90-92% |
| B+ | 3.3 | 87-89% |
| B | 3 | 83-86% |
| B- | 2.7 | 80-82% |
| C+ | 2.3 | 77-79% |
| C | 2 | 73-76% |
| C- | 1.7 | 70-72% |
| D+ | 1.3 | 67-69% |
| D | 1 | 63-66% |
| D- | 0.7 | 60-62% |
| F | 0 | 0-59% |
Brief history of different grading systems
In 1887 Mount Holyoke College introduced a letter‑grade scheme resembling today’s A‑E scale, where E signified a failing mark. The cutoff was stringent: any score below 75 % earned an E. Later the institution added an F for failures, keeping the sub‑75 % threshold. This alphabetic system spread rapidly through secondary schools and other colleges, eventually giving rise to the modern grading letters. Yet considerable differences persist, such as what percentage qualifies for an A or whether pluses and minuses (e.g., A+ or B−) are used.
An alternative to the letter grading system
Letter grades offer a convenient shorthand for summarizing a learner’s achievement. They work well when answers can be objectively judged—like in a math test—but alone they may not supply enough insight for more subjectively assessed work such as essays.
While detailed written critiques for each student could provide richer feedback, critics argue that families rarely read them and teachers lack time to produce them. Some schools, like Saint Ann’s in New York City, forgo letter grades entirely, opting for narrative reports that emphasize growth over score. Such alternatives remain rare across the U.S., and most colleges still rely on conventional letter grades that students must navigate. The extensive effort required for narrative evaluation makes it impractical on large university courses. Though a few high schools, for example Sanborn High School, experiment with more qualitative grading, scaling these models remains uncertain. Consequently, broad grading systems like letters are unlikely to disappear soon, even as educators seek ways to lessen the motivational pressure of grades. A hybrid approach that blends numerical grades with qualitative commentary might be the most feasible path toward balanced assessment.