Determine your grade on an assignment from points earned.
Enter points earned and points possible to get percentage and letter grade.
Assignment Grade
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Letter grade: — · Points lost: —
Optional: Extra credit
Adjusted grade with extra credit appears below.
Adjusted: —
The Assignment Grade Calculator computes your grade on any single assignment from the points you earned and the points possible. It also supports optional extra credit, showing both the original grade and the adjusted grade when extra credit is added. This is the simplest and most common grade calculation students perform — useful for individual homework, quizzes, lab reports, and projects.
Grade % = ( Points Earned ÷ Points Possible ) × 100
With extra credit: Grade % = ( Points Earned + Extra Credit ÷ Points Possible ) × 100
Basic: You earned 18 out of 20 points. Grade = (18/20) × 100 = 90% (A-).
Extra credit: You earned 18 out of 20 plus 2 extra credit points. Adjusted grade = (18+2)/20 × 100 = 100% (A).
Lab report: 47 out of 50 points. Grade = (47/50) × 100 = 94% (A).
Group project: 85 out of 100 points. Grade = (85/100) × 100 = 85% (B).
Most courses assign points to each assessment, with the course grade determined by the total points earned divided by total points possible. Tracking your points as the semester progresses helps you know where you stand and what you need on remaining assignments to reach your target grade.
For example, if your syllabus shows: Homework (100 pts), Quizzes (50 pts), Midterm (100 pts), Final (150 pts), Project (100 pts) — total 500 pts. If after the midterm you have earned 220 out of 250 possible points (88%), and your target is 90% (450/500), you need 230 out of the remaining 250 points (92%) to reach your goal. This kind of tracking, combined with our Final Grade Calculator, helps you make strategic decisions about where to focus your effort.
Several common mistakes can distort your grade calculation. First, forgetting to account for dropped assignments — many courses drop the lowest quiz or homework, which can significantly boost your percentage. Second, miscounting points possible — if an assignment was out of 25 instead of 20, using 20 will understate your grade. Third, not tracking late penalties, which can be 10-25% per day. Always check your syllabus and confirm point values with your instructor when in doubt.
Extra credit is particularly valuable because it raises your numerator without raising your denominator. Adding 5 extra credit points to a 50-point assignment that you scored 45 on takes you from 90% (A-) to 100% (A) — a full letter grade improvement. This is why students who aggressively pursue extra credit opportunities often outperform peers with similar raw ability. Use the calculator to model different extra-credit scenarios and decide which opportunities are worth your time.
Divide points earned by points possible, then multiply by 100. Example: 18/20 = (18/20) × 100 = 90%.
Add the extra credit to points earned but keep points possible the same. Example: 18 points + 2 extra credit out of 20 possible = 20/20 = 100%.
Multiply each assignment percentage by its weight (as a decimal), then sum. Use our Grade Calculator for weighted calculations.
Instead of points, rubrics use levels (e.g., Exemplary, Proficient, Developing) that map to point ranges. Convert by taking the midpoint of the level's range.
Yes. Curve methods include: top score becomes 100%, mean becomes 75%, or scores are normalized. Ask your instructor for the specific curve formula.
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