Grade Percentage Calculator

Enter the points you earned and the points possible. The formula is (pointsEarned / pointsPossible) x 100, rounded to two decimal places. You get back the percentage, the standard 10-point letter grade (A 90+, B 80-89, C 70-79, D 60-69, F below 60), the plus/minus letter grade with the usual 3-point bands (A+ 97+, A 93-96, A- 90-92, B+ 87-89, and so on), a pass/fail flag at the 60 percent mark, and the number of additional points you would need to reach the next letter.

The 10-point scale groups every 10 percent into a single letter: A is 90 and above, B is 80 to 89, C is 70 to 79, D is 60 to 69, F is below 60. Most K-12 schools and many community colleges use this version because it leaves fewer borderline disputes. The plus/minus scale slices each letter into three bands, so 92 percent is an A- rather than an A. Selective US colleges, many high school AP classes, and most graduate programs use plus/minus because it preserves more signal in the final GPA.

Toggle Partial credit per question on and paste a JSON list of rows like {"questionId": "Q1", "awarded": 3.5, "possible": 5}. The calculator sums the awarded values for total points earned, sums the possible values for total points possible, and computes the percentage from those totals. Each row must have a unique questionId, non-negative awarded, possible greater than zero, and awarded cannot exceed possible. The per-question breakdown shows each row alongside its individual percent so you can see which questions cost you the most.

This calculator sets its pass flag at 60%. That is an internal default, not a standard US rule. Courses, programs, and professional requirements may set a different passing score, so use your syllabus or program handbook for the official result.

It tells you the minimum additional raw points you would need so the resulting percentage hits the next plus/minus band. For example, with 80 points out of 100 (a B-), reaching the B+ cutoff at 87 percent needs 87 points total, which is 7 more raw points. The calculator computes this against the total points possible, so a 50-point test moves through bands faster than a 200-point test: each percentage point is worth fewer raw points when there are fewer points on offer.