Grade Calculator
This free online grade calculator turns your scores and their weights into your current grade in seconds. You get a percentage and a letter, color-coded so you can see where you stand at a glance. No sign-up, and it works for any class, school, or college.
Free · No sign-up · Instant results · Works for any school or college
Every grade tool in one place
Pick the calculator you need
Need something more specific than a course average? Each of these tools handles one job, and they all use the same scores-and-weights approach you see above.
How to use this grade calculator
- List your assignments. Add a row for each graded item: homework, a quiz, the midterm, the final. The name is optional and just helps you keep track.
- Enter each score as a percentage. If you got 18 out of 20, that’s 90. Only have points? Run them through the grade percentage calculator first.
- Add the weight for each one. Weights are how much each item counts toward the final grade, usually listed on your syllabus. If your weights don’t add up to 100, the calculator adjusts and tells you it did.
- Read your grade. Your percentage and letter appear instantly and shift color by band, so an 85 reads as a B without the mental math.
- Try a what-if. Change a score or add a grade you expect to get, then watch how it moves your average before the real mark is in.
Not using weights this term? Leave the Weight % column blank and the tool averages your scores equally instead.
Worked example: calculating a weighted grade
The calculator opens with a sample course so you can see how it behaves. Here are those four grades and what each one adds to the total:
- Homework: 92% counting for 20% → 92 × 0.20 = 18.4
- Quizzes: 88% counting for 15% → 88 × 0.15 = 13.2
- Midterm: 78% counting for 25% → 78 × 0.25 = 19.5
- Final exam: 85% counting for 40% → 85 × 0.40 = 34.0
Add the four contributions: 18.4 + 13.2 + 19.5 + 34.0 = 85.1%. The weights already total 100, so the course grade is 85.1%, a B.
The midterm and final together decide 65% of this grade, so they move the average far more than the homework does. That is the whole point of weighting, and it is why a strong final can rescue a rough start to the term.
How your grade is calculated
The weighted-average formula
A weighted grade multiplies each score by its weight, adds those up, and divides by the total weight:
When your weights add up to 100, the division changes nothing and your grade is just the sum of the contributions. When they don’t (say you have only entered three of five categories so far), dividing by the weight you actually entered gives your grade on the work graded to date. The calculator handles this for you and notes when it has.
The grading scale
Letter grades come from the US scale below. Whole-letter grading uses five bands (A, B, C, D, F); many high schools and colleges add plus and minus grades for a finer 4.0-scale GPA. Turn on Use +/- letter grades in the calculator to grade on this scale, or see every cutoff on the grading scale chart.
| Letter | Percentage | GPA |
|---|---|---|
| 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 | Below 60% | 0.0 |
How grades, percentages, and GPA fit together
Three numbers describe the same performance: a percentage, a letter grade, and a GPA (grade point average). This calculator shows all three at once. The percentage is the raw weighted average of your scores; the letter grade is the band that percentage lands in; and the GPA is the grade points that letter is worth on a 4.0 scale.
Weighted vs. unweighted average
An unweighted (simple) average treats every assignment equally and divides your total by the number of grades. A weighted average multiplies each grade by its category weight first, so a 40%-weighted final counts far more than a 5%-weighted quiz. Most syllabi use weighted grading, which is why this tool defaults to it. Clear the weight column to switch to a simple average.
Unweighted vs. weighted GPA
A standard unweighted GPA caps every course at 4.0. A weighted GPA adds grade points for harder classes (typically +1.0 for AP and college-level courses and +0.5 for Honors), so it can rise above 4.0. High schools use weighted GPA to reward rigor, while most colleges recalculate to an unweighted 4.0 scale for admissions.
Common grade-calculation mistakes to avoid
- Counting ungraded assignments. Only enter work that has a real score. Adding zeros for assignments that have not been graded yet makes your current grade look far lower than it is.
- Mixing weights with point totals. Pick one method per class: weighted percentages or raw points. Use Points mode for points-based gradebooks, and do not add a weight to a points total.
- Forgetting a dropped or lowest grade. If your teacher drops the lowest quiz, leave that score out so your average matches the gradebook.
- Rounding too early. Keep the decimals while you calculate; an 89.5% may round up to an A− or stay a B+ depending on the rounding rule your school uses, so check the syllabus.
- Ignoring a curve. If a test was curved, enter your curved score, not the raw one. The grade curve calculator shows how a curve changes a whole set of scores.
Frequently asked questions
How do I calculate my grade?
List every graded assignment with the score you earned and the weight it carries, then take the weighted average: multiply each score by its weight, add them, and divide by the total weight. This calculator does that as you type. If your class doesn’t use weights, a plain average of your scores is your grade.
What is a weighted grade?
A weighted grade is one where some assignments count for more than others. If the final exam is worth 40% and a homework set is worth 5%, a point on the final moves your grade eight times as much as a point on the homework. Weighting reflects how your teacher chose to value each part of the course.
How do I calculate my grade without weights?
Leave the Weight % column empty for every assignment. The calculator then switches to a simple average: it adds your scores and divides by how many there are. Use this when every assignment is worth the same, like a set of quizzes or daily work.
Can I add extra credit?
Yes. Add a row for the extra-credit points as another score. Because extra credit lifts your total without adding to what was possible, your grade ticks up. Your syllabus is the best guide to exactly how your teacher applies it.
What grade do I need on my final?
Use the grade-goal box under the calculator: enter the grade you want to finish with and it shows the exact score you need on your remaining weight. For more detail, such as multiple what-if scenarios, see the dedicated final grade calculator (coming soon).
Does this work for my school or college?
Yes. The math behind a weighted grade is the same from middle school to university. The only thing that changes between schools is the grading scale, and you can switch to a plus/minus scale on the grading scale chart if yours uses one.
Is this grade calculator free?
Completely free, with nothing to install and no account to create. Your numbers stay in your browser, so nothing you type is sent anywhere or stored.
How do I calculate my GPA?
Turn each course grade into its grade points (A = 4.0, B = 3.0, and so on, or use the +/- values in the scale table), multiply by the course credit hours, add those up, and divide by your total credit hours. This page shows the GPA for one course; for a full transcript, use the GPA calculator.
What counts as a passing grade?
In most US schools, a D (60%) is the lowest passing grade, though many programs need a C (70%) or higher to earn credit, and pass/fail courses usually require about 60 to 70%. The exact cutoff varies, so check your syllabus.
How do I calculate a points-based grade?
Switch the calculator to Points mode and enter the points you earned and the points possible for each assignment. Your grade is total points earned divided by total points possible. That is the right method when your gradebook adds up raw points instead of weighting categories.
Can I use this for a semester, quarter, or marking-period grade?
Yes. Enter each category (quizzes, tests, the midterm, the final) with its weight, and you get your overall semester, quarter, or marking-period grade. It works the same whether your school reports a numerical grade, a letter, or a GPA on the report card.
Why use Calculate Your Grade
Most grade calculators hand you a number and stop. Calculate Your Grade shows the working, color-codes the result so the number is easy to read, and points you toward the right tool when your question changes, like what you need on the final or how a curve changes your scores. It loads fast, fits a phone screen, and keeps your data on your device.
Results are estimates based on the grading scale you choose. Always confirm your official grade with your teacher’s syllabus or your school’s gradebook.