Free grading calculator
Grading calculator for points off and partial credit.
Enter total points possible, then points off. Get the score, percentage and letter grade for quizzes, rubrics and partial-credit work.
For example, 50 total − 7.25 off gives 42.75 / 50 (85.50%).
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Out of 20 points. Buttons adjust by 1.
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Points-off workflow
Start with the total possible, then subtract the deduction.
In the setup panel, select Points off and enter the total points possible. Choose 1, 0.5, or 0.25 as a convenient button and reference-table step. You can still type another valid decimal when a student's partial-credit deduction does not match that step.
Already have the points earned? Subtract them from the total first: a score of 42.75 out of 50 means 7.25 points off. Enter 50 as the total and 7.25 as the deduction, rather than entering 42.75 in Points off.
The calculator uses the full decimal value to decide the grade and pass status, even if you choose to display a rounded percentage. Open Grade scale and choose 1 or 2 decimals under Percent display to see the fractional percentage.
Points-off formula
Calculate the score before the percentage.
Score = total points − points off. Then percentage = score / total points × 100.
The calculator keeps the full decimal result for grade and pass decisions. The examples below show how partial-credit deductions become scores and percentages.
| Total points | Points off | Score | Percentage |
|---|---|---|---|
| 100 | 10.01 | 89.99 / 100 | 89.99% |
| 50 | 7.25 | 42.75 / 50 | 85.50% |
| 20 | 0.25 | 19.75 / 20 | 98.75% |
Threshold examples
A displayed whole number can sit on either side of a cutoff.
These examples use a 100-point total, GradeTap's default A–F bands, and its default 60% pass line. The calculator compares the percentage before display rounding. Change Grade scale to match your local policy before using a different set of cutoffs.
| Points off | Score | Exact % | Shown % | Result |
|---|---|---|---|---|
| 10 | 90 / 100 | 90.00% | 90% | A Pass |
| 10.01 | 89.99 / 100 | 89.99% | 90% | B Pass |
| 40 | 60 / 100 | 60.00% | 60% | D Pass |
| 40.01 | 59.99 / 100 | 59.99% | 60% | F Below line |
At 89.99%, the whole-number display is 90%, but the default A band starts at 90%, so the result remains B. At 59.99%, the display is likewise 60%, but the score is still below the default pass line and remains F / Below line. Scores of exactly 90% and 60% meet those respective thresholds.
When points off helps
Use it for work that is not a simple missed-count test.
Constructed responses: deduct a portion of a point for a missing step, weak evidence, or a calculation error.
Mixed-weight assessments: enter the total possible and the combined points off instead of trying to convert each item to an equal question.
Rubrics with partial credit: keep a decimal deduction such as 0.25 or 1.5 intact until the final percentage is calculated.
Grade decisions
Keep local policy separate from display rounding.
Open Grade scale to set the letter bands your class uses and enter a pass line when it is different from the letter-grade cutoff. The visible percentage can show whole numbers, one decimal, or two decimals. A rounded display never changes the underlying grade decision.
For equal-weight quizzes, switch to Questions missed or use the focused EZ grader. To print a table for a particular setup, use View grade table below the calculator.