How to use the Grade Calculator
- List each category with its score and weight (e.g. “Quizzes, 85, 15”).
- Enter the final exam weight and the grade you want.
- Read your current grade and the score you need on the final.
How weighted grades work
Each category counts in proportion to its weight: grade = Σ(score × weight) ÷ Σ(weight). With 60% of the course done at 84%, a 40% final needs (target − 0.6 × 84) ÷ 0.4 to reach the target. If the answer is over 100%, the target is out of reach.
Working out a GPA? Use the GPA Calculator.
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Tools that pair well with the Grade Calculator
- Average Calculator — Paste or type numbers to get the mean, median, mode, range, sum and count instantly.
- Fraction Calculator — Work with fractions and mixed numbers: add, subtract, multiply or divide two fractions and get the simplified answer with steps, as a mixed number and a decimal.
- Standard Deviation Calculator — Paste a list of numbers — from a spreadsheet, separated by commas, spaces or new lines — and get the standard deviation (sample and population), variance, mean, median, mode, range and quartiles, with the steps.
- Roman Numeral Converter — Convert any number from 1 to 3,999,999 into Roman numerals — or read Roman numerals back as numbers — with a breakdown of every symbol.
Frequently asked questions
What if the weights don’t add up to 100%?
The current grade is calculated from the weights you entered, so it is still correct for the work done so far.
Can I use letter grades?
Enter percentages. A = 90–100, B = 80–89, C = 70–79 on the common U.S. scale.
Is anything I enter saved or sent?
No. The calculation runs in your browser. Your last inputs are remembered on this device only, so the page opens where you left off.
Can I install Grade Calculator as a web app and use it offline?
Yes. Grade Calculator is an installable web app (PWA) — installed from your browser, not downloaded from an app store. Click Install app at the top of this page in Chrome or Edge (Windows, macOS, Linux, ChromeOS) or on Android, use Share → Add to Home Screen on iPhone and iPad, or File → Add to Dock in Safari 17+ on a Mac. It then opens in its own window with its own icon, and because it runs entirely in your browser it keeps working offline. Firefox on desktop can’t install web apps. How installing works.