CodeKitHubWhat Is This Tool?
A grade average is the single number that summarizes a set of scores. The simple average adds all grades and divides by their count — right when every grade matters equally. The weighted average multiplies each grade by its weight (credits, ECTS, or a percentage share) before dividing by the total weight — right when a 6-credit course should count more than a 2-credit one, or when the final exam is worth more than the midterm.
The most common school pattern is a midterm and a final combined with fixed percentages, such as 40% midterm + 60% final. That is just a weighted average with two entries — and because it is so common, this tool has a dedicated mode for it, including the reverse question every student eventually asks: given my midterm score, what do I need on the final to pass?
Why Use It?
- Handles both simple and weighted averages — switch with a single checkbox.
- Dedicated midterm + final mode with adjustable percentage weights (40/60 by default).
- Reverse calculator: enter a target overall grade and your midterm score to get the minimum final exam score you need.
- Works with any grading scale — points out of 100, 0–10 grades, or anything numeric.
- Free and instant, with nothing uploaded — the calculation runs entirely in your browser.
How to Use
- Choose a mode: several grades, or midterm + final.
- In list mode, enter each grade with its weight or credits (tick the checkbox for a simple unweighted average).
- In midterm + final mode, enter your scores and adjust the two percentage weights if your course uses something other than 40/60.
- Press the calculate button — or leave the final score empty and fill in a target grade to see what you need on the final.
Example
Input
Midterm 55, final exam 70, weights 40% / 60%Output
Overall course grade: 6455 × 0.40 + 70 × 0.60 = 22 + 42 = 64. If the pass mark is 60 and your midterm is 55, the reverse mode shows you need at least 63.4 on the final.
Weighted average at a glance
| Component | Grade | Weight | Contribution |
|---|---|---|---|
| Midterm | 55 | 40% | 22.0 |
| Final exam | 70 | 60% | 42.0 |
| Overall | — | 100% | 64.0 |
Related calculators for students
If your school reports grades on a 4.0 scale, the GPA Calculator converts course grades and credits into a grade point average. For quick percentage questions — what percent is 42 of 60, or what is a 15% increase — the Percentage Calculator covers all the common forms.
The Age Calculator computes exact ages for enrollment forms, and the AI prompt collections help students study more effectively.
→ GPA Calculator · Percentage Calculator · Age Calculator · AI Prompts for Students
Frequently Asked Questions
What is the difference between a simple and a weighted average?
A simple average treats every grade equally: add them up and divide by how many there are. A weighted average lets some grades count more: each grade is multiplied by its weight (credits, hours, or a percentage), the products are summed, and the total is divided by the sum of weights. If all weights are equal, the two give the same result — the weighted average is the general case.
What weights do midterm and final exams usually have?
The most common split is 40% midterm and 60% final, which is why the tool uses it as the default. Other frequent schemes are 30/70 and 50/50, and some courses add homework or quizzes as a third component. Check your course syllabus — the weights are set by the institution, and this calculator lets you adjust them freely.
How do I calculate what I need on the final exam to pass?
Solve the weighted average for the final score: needed final = (target × 100 − midterm × midterm weight) ÷ final weight. Example with 40/60 weights, a pass mark of 60 and a midterm of 50: (60 × 100 − 50 × 40) ÷ 60 = 66.7. The reverse mode in this tool does this calculation for you and also flags targets that are unreachable even with a perfect score.
Does this calculator work with grades out of 10 or other scales?
Yes. The math of averaging is scale-independent — enter grades out of 10, out of 20, out of 100 or any numeric scale, and the average comes out on the same scale. Just keep all entries on one scale; don't mix grades out of 10 with grades out of 100 in the same list.
Is this the same as a GPA calculator?
Not quite. A GPA converts each course grade to grade points on a fixed scale (typically 4.0) and then weights by credits, producing a normalized index used for transcripts. This tool averages the raw scores themselves, which is what you need for course grades, exam averages and pass marks. For the 4.0-scale calculation, use the GPA Calculator.
Is my data stored anywhere?
No. The calculation runs in your browser with JavaScript; the grades you enter are never sent to a server, stored or logged.