Grade Calculator

A grade calculator works out your overall course grade from individual assignments, quizzes, projects, and exams — taking into account how much each one is worth. This matters because most syllabi don't treat all marks equally: a final exam worth 45% of the grade counts far more than a homework set worth 10%. Students use it to track exactly where they stand mid-semester, to see how a single upcoming test could move their grade, and to set a realistic study target for the work that is still left. Teachers and parents use it the same way — to convert a column of raw marks into one fair overall figure. The what-if section below goes a step further and tells you the precise mark you need on your last assessment to reach each target grade, so you know whether an A is still mathematically possible.

What this calculator does and who it's for

Enter each component with the marks you scored, the marks it was out of, and (in weighted mode) its weight as a percentage. The tool converts every component to a percentage, combines them, and returns your overall grade as a percentage, a letter, and an approximate GPA on the 4.0 scale. It is aimed at school and college students, but it works for any course built from multiple graded pieces — a professional certification, a coaching-class test series, or a workplace training module. Nothing you type is sent anywhere; the whole calculation runs in your browser.

How the weighted grade is calculated

Each item's percentage score is multiplied by its weight, the products are summed, and the total is divided by the sum of the weights:

Grade = Σ(score% × weight%) / Σ weights

The weights do not have to add up to 100. If your three components carry weights of 20, 35 and 45 they happen to total 100, but weights of 1, 2 and 2 would give the same relative result because the calculator always divides by the total weight you entered. That means you can use raw “marks out of” values as weights too — a 25-mark quiz and a 100-mark exam can simply be weighted 25 and 100.

Worked example

Suppose a Class 12 student has three components: Homework scored 85 out of 100 (weight 20), a Midterm scored 78 out of 100 (weight 35), and a Final scored 90 out of 100 (weight 45). Each percentage is multiplied by its weight: 0.85×20 = 17, 0.78×35 = 27.3, and 0.90×45 = 40.5. Adding these gives 84.8, and dividing by the total weight of 100 gives an overall grade of 84.8% — a letter grade of B on the scale used here. Notice how the heavily weighted final pulls the average up: the same 90% counted for far more than the 85% homework. Switching to unweighted mode instead averages the three percentages equally — (85 + 78 + 90) / 3 = 84.33% — ignoring the weight column entirely.

Weighted vs unweighted

Weighted (recommended): each assessment counts in proportion to its assigned percentage — finals are typically 40–50%, homework 10–20%, and class participation perhaps 5%. This mirrors almost every real syllabus. Unweighted: every assessment counts equally regardless of its size, which is rarely how a course is actually graded but is useful for a quick “average of my marks” check or when a teacher genuinely weights everything the same.

Grading in India

Indian schools and universities map a final percentage onto letters or grade points. CBSE Class 10 and 12 report marks plus a 9-point grade (A1, A2, B1…E); for that specific scale use our CBSE marks to grade calculator. Most universities then combine internal (sessional) assessment and the end-semester exam — typically a 25:75 or 30:70 split — into a percentage and a 10-point CGPA. The pass mark for an individual paper is commonly 40%, though many institutions also set a separate minimum in the internal and external components that you must clear on its own. Use this tool to model whatever internal/external weighting your course follows, then read the percentage straight off the result.

Common mistakes to avoid

• Entering the score out of the wrong total — always check the “Out of” column matches the actual maximum marks of that paper.
• Assuming a borderline mark rounds up. Many institutions use a hard cut-off, so 89.9% can still be a B. Confirm your syllabus's rounding policy before celebrating.
• Leaving an upcoming exam at a score of 0 and panicking at the low “current grade” — that is expected. Use the what-if section to see the mark you actually need.
• Mixing weighted and unweighted thinking. If your syllabus lists weights, keep weighted mode on; the unweighted average will not match your report card.