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Different question values? Add their points first. Extra credit can take the score above 100%.
What is 120 out of 200 as a percentage?
To find 120 out of 200 (120/200) as a percentage, divide 120 by 200 and multiply by 100: 120 ÷ 200 × 100 = 60%, a D- on the common US plus/minus scale.
Letter scale: Common US plus/minus scale
The plus/minus cutoffs Wikipedia lists for US colleges: A+ from 97%, A 93, A- 90, B+ 87, B 83, B- 80 and so on down to D- at 60. It is not universal, so use your syllabus's cutoffs when they differ. Source: Wikipedia, “Academic grading in the United States”.
| Letter | Lowest % | Remove |
|---|
Each letter starts at its lowest percentage and runs up to the next letter.
Rounding and decimal places
Follow your syllabus. A displayed percentage can round up while the unrounded score stays below a cutoff.
Only changes how results are shown. Extra places appear when rounding would push a score over a letter cutoff.
A letter typed as a score counts as the lowest percentage for that letter on this scale. Use the original percentage when you have it.
Check a single cutoff with the grading scale calculator.
Grading scales checked . Sources are at the bottom of the page.
The fraction, decimal and missing points
120/200 = 3/5 = 0.6
Divide 120 earned points by 200 possible points, then multiply by 100 to get 60%. 200 − 120 = 80 points missed.
Or count by points: each point is worth 100 ÷ 200 = 0.5%, so 120 × 0.5 = 60%.
The letter above uses the common US plus/minus scale. Your class may set other cutoffs: open “Letter scale” above to choose another scale or enter your own. For the general method, see how to turn points into a percentage.
What does one more point change?
| Points earned | Percentage | Points missed |
|---|---|---|
| 59.5% | 81 | |
| 120 out of 200 | 60% | 80 |
| 60.5% | 79 |
One point changes this score by 0.5 percentage points. The denominator stays 200.