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Enter each assignment's score and what it was out of, and get your overall percentage, letter grade and points total. This is the right calculator when your syllabus grades on total points — every mark goes into one pot, so a 100-point midterm naturally counts more than a 20-point quiz without you having to weight anything.
If your syllabus instead assigns percentages to categories — homework 20%, midterm 30%, final 50% — use the weighted grade calculator instead. Totalling raw points across categories that carry different weights produces a number that looks plausible and is wrong.
Frequently asked questions
How is my grade percentage calculated?
All your scores are added together, all the points-possible are added together, and the first is divided by the second. So 88/100 plus 17/20 plus 72/90 is 177 out of 210, which is 84.29%. Rows with a blank or zero points-possible are skipped rather than counted as failures.
Why doesn't this match my school's grade portal?
Almost always a policy the calculator can't see. The three usual culprits: your course drops the lowest score in a category, ungraded assignments are being counted as zeros in one place and excluded in the other, or extra credit is applied outside the normal total. Check the syllabus for those rules before assuming either number is wrong.
Is the letter grade scale universal?
No. The tool uses the most common US 10-point scale with plus and minus (93+ is an A, 90–92 an A−, and so on), but institutions genuinely differ — some set an A at 94, some don't award A+ or D−, and many graduate programmes shift everything upward. Treat the percentage as the real answer and the letter as a hint.
Is my grade data saved anywhere?
No. Everything is calculated in your browser and nothing is transmitted or stored. Closing the tab discards it, so write the numbers down if you want them later.