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Grade Calculator
Work out your overall course grade from assignments, tests and exams, with or without weights.
StudentsWeights total: 100% — matches a standard syllabus.
Weighted course grade on the US standard scale
This all-purpose grade calculator answers the question students ask all semester: what is my grade in this class right now? Add each piece of work, an assignment, a quiz, a midterm, with the score you earned and, if your syllabus uses them, its weight. Leave every weight at the same value for a simple average, or enter real syllabus weights for a weighted result. The percentage and letter grade update with every row.
How to use the Grade Calculator
- Add a row for each assignment, quiz, test or exam.
- Enter the score you earned as a percentage.
- Enter its weight, or leave all weights equal for a simple average.
- Read your current course grade and letter grade.
Formula
With equal weights this reduces to the ordinary mean of your scores. With syllabus weights it becomes the weighted average your teacher will report.
Worked example
You have scored 88% on assignments, 76% on quizzes, 91% on a midterm and have the final, worth 30%, still to come. Enter the three finished items with weights 25, 15 and 30, and the grade so far is (88 x 25 + 76 x 15 + 91 x 30) / 70 = 86.7%. To finish at 90% you would need about 97.7% on the final, which the Final Grade Calculator confirms directly.
Good to know
A grade in progress is a moving number. Early in the term, one low quiz can drag the average down simply because few items exist yet; the same quiz matters far less in week twelve. When you check your standing, include only work that has actually been graded, and remember that ungraded items in a portal often show as zeros, which understates your real grade. Rebuilding the calculation here, with graded work only, gives the cleaner picture.
US grading scale reference
The table below is the US plus/minus scale used across this site. Where this tool offers other scales, the Canadian scale sets an A from 85% with a pass at 50%, and the Australian scale uses the bands HD (85%+), D (75-84%), C (65-74%), P (50-64%) and F (below 50%) on a 7.0 GPA.
| Letter grade | Percentage | GPA points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D- | 60–62% | 0.7 |
| F | 0–59% | 0.0 |
Frequently asked questions
How do I calculate my grade in a class?
List the graded work, convert each result to a percentage, and average them using the weights in your syllabus. This calculator does the averaging and shows the letter grade for the scale you pick.
Why does my portal grade look lower than this?
Portals often count ungraded or upcoming work as zero. Calculate with graded items only to see your standing on work actually marked.
What if my teacher uses points, not percentages?
Convert each item with the Points to Percentage Calculator, or total all points earned and divide by all points possible; that ratio is your course percentage in a pure points system.
Can I plan what I need on remaining work?
Yes. Add a row for the remaining work, try a score, and see the resulting course grade. For a single final exam, the Final Grade Calculator solves for the required score exactly.
Does this work for middle school and high school classes?
Yes. The maths is the same at every level. Choose the grading scale your school reports, US standard or plus/minus, to see the matching letter grade.
Go deeper
Prefer the full walkthrough? Read our guide: What Do Letter Grades Mean? — it explains the method step by step with more worked examples.
Sources & further reading
- College Board BigFuture — How to Calculate Your GPA on a 4.0 Scale — The most widely cited US reference for letter-grade to 4.0-scale conversion.
- National Center for Education Statistics (US Department of Education) — Official US education data on grading, attainment and outcomes.
Related tools
Last reviewed: November 2026. Results from this calculator are estimates based on the published scales above; your school's recorded grade is the official one.