Grade Calculator Calculators
Turn a score into a percentage and a letter grade.
Grade Calculator is a free online tool that turn a score into a percentage and a letter grade. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- Calculators
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- 3
- Works offline
- Yes, after the first visit
About Grade Calculator
The letter bands used here are the common US convention — 93+ for an A, 90 for an A−, and so on down in three-point steps. They are not universal: UK degree classifications, the German 1–5 scale and the IB 1–7 scale all work completely differently.
How to use it
- Enter points earned, points possible and grade you need.
- Results update the moment anything changes.
The 3 settings
| Setting | What it does | Default |
|---|---|---|
| Points earned | A numeric value. | 43 |
| Points possible | A numeric value. | 50 |
| Grade you need | Range 0–100%. | 70% |
Under the hood
| Runs on | plain JavaScript — runs the whole thing |
| Controls | Points earned, Points possible, Grade you need |
Questions
How do I work out what I need on the final exam?
Set "points possible" to the total for the whole course and "points earned" to what you have so far, then read off the points needed for your target percentage.
What are the limits on grade you need?
It accepts 0 to 100%, starting at 70%.
Is the arithmetic exact?
It uses double-precision floating point — about 15 significant figures, far more than the inputs justify. Displayed rounding is cosmetic; the underlying numbers are not rounded between steps, so chained results do not drift.