Grade calculator
A score out of a total, as a percentage and a letter
Type the points you got and the points possible. The example is 17 out of 20.
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- Percentage
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- Letter grade
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- Points missed
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A guide, not your official grade. Your school's own scale and rules decide.
Your grading scale
The letter comes from this scale. Your school's own scale decides your grade. Change any letter or number to match it.
| Letter | From (%) | Remove |
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How the grade is worked out
Divide the points you got by the points possible, then multiply by 100. 17 out of 20 is 17 ÷ 20 = 0.85, and 0.85 × 100 = 85%. The working line under the answer shows the same steps with your numbers, so you can check it on any calculator.
If you know how many you got wrong instead, choose Number wrong. The page takes the wrong answers away from the total first: 3 wrong out of 20 is 17 right.
The letter grade
The letter comes from the grading scale under the result. It starts on a common US 10-point scale (A from 90%, B from 80%, C from 70%, D from 60%). Schools set their own scales, so pick another one or type yours. Some schools round 89.5% up to 90% before giving the letter; tick the rounding box if yours does.
Teachers: the grading chart
The chart below lists every possible score on the test, from none wrong down to all wrong, with the percentage and letter for each. It is the same idea as a paper grading chart. It shows up to 200 points or questions.
Extra credit and part marks
Points can have decimals, such as 17.5. If the points you got are more than the total, for example with extra credit, the percentage goes over 100.
To combine several grades, use the weighted grade calculator.
Grading chart for this test
Every score on the test above, with its percentage and letter.
| Wrong | Right | Percent | Letter |
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