Best Online Grade Curve Calculator

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Grade Curve Calculator

Grade Curve Calculation Result

Name Result
Student Scores:
Curve Percentage:
Student Grade:
Disclaimer Don’t Rely On The Calculator, Do It Manually Too

grade curve calculator is a powerful tool that can be used by both students and teachers alike to determine how grades will be adjusted based on the performance of the entire class.

Furthermore, a grade curve calculator can serve as a motivator for students to strive for excellence and not settle for minimal effort. 

Let’s perform your calculations with this amazing calculator.

Basic Example To Use Grade Curve Calculator

Here’s an example using dummy values to perform calculations with a grade curve:

Let’s say you have a class of three students who have just taken a challenging physics test. Their initial scores are as follows:

  • Student 1: 68
  • Student 2: 75
  • Student 3: 80

As the teacher, you decide to apply a 15% curve to account for the difficulty of the test. After applying the curve, the scores become:

  • Student 1: 78.2 (68 + 15% of 68)
  • Student 2: 86.25 (75 + 15% of 75)
  • Student 3: 92.0 (80 + 15% of 80)

Now, let’s determine the grades based on the standard grading scale:

  • A: 90-100
  • B: 80-89
  • C: 70-79
  • D: 60-69
  • F: 0-59

Based on these adjusted scores:

  • Student 1 receives a grade of C
  • Student 2 receives a grade of B
  • Student 3 receives a grade of A

The grading curve, in this example, has helped normalize the scores, ensuring that each student’s grade accurately reflects their performance relative to their peers, considering the difficulty of the test.

Grade Curve Calculator Formula

The formula for adjusting student scores with a curve percentage in the curve calculator can be represented as follows:

Adjusted Score = Initial Score + (Initial Score * Curve Percentage / 100)


  • “Initial Score” is the original score of the student on a particular assessment.
  • “Curve Percentage” is the percentage by which the scores are adjusted. For example, if the curve percentage is 10%, it means the scores are increased by 10%.
  • “Adjusted Score” is the final score after applying the curve.

This formula is used for each student’s score to adjust it based on the specified curve percentage. 

The adjusted scores are then used to determine the corresponding grades based on predefined grading criteria.

Final Thoughts

The grade curve calculator is a valuable tool for both students and educators alike.

By using this calculator, educators can make informed decisions about grading policies and ensure that grades are reflective of actual achievement.

For the seek of users, we also provide one basic detail example with the calculator that the user easily understands how to use the calculator.

Good Luck!