This Grade Calculator calculates a final grade based on weighted averages. The calculator accepts both numerical as well as letter grades in the "Grade" field. Numbers entered can either be typical grade points assigned to certain letter grades, or can also be numbers from 0-100. This allows manipulation of the calculator to determine the averages necessary for each portion of a course to attain the desired final grade. Note that the weight field must be numerical, and additional rows can be added by clicking the last row.

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Given a "Target Final Grade," this calculator can help determine the average grade necessary to attain the target grade, based on a current average grade and its total weight contribution to the total grade. For example, if a student currently has an 85 in a course, and wants to determine the necessary average on the remaining assignments or tests to attain a 90 in the course, the student will first need to determine what percentage of their total grade the 85 comprises. Given that value, the calculator can then determine the necessary average grade. It is possible for the calculator to return values that may not be possible, such as an average grade of 116 on future assignments. This means that given the weight of the remaining assignments and tests, the desired grade would not be attainable (without extra credit or a means to attain the calculated grade).

RelatedGPA Calculator

The calculators above use the following letter grades and their typical corresponding numerical equivalents based on grade points. Refer to the GPA Calculator for further detail.

### Brief history of different grading systems1

In 1785, students at Yale were ranked based on "optimi" being the highest rank, followed by second optimi, inferiore (lower), and pejores (worse). At William and Mary, students were ranked as either No. 1, or No. 2, where No. 1 represented students that were first in their class, while No. 2 represented those who were "orderly, correct and attentive." Meanwhile at Harvard, students were graded based on a numerical system from 1-200 (except for math and philosophy where 1-100 was used). Later, shortly after 1883, Harvard used a system of "Classes" where students were either Class I, II, III, IV, or V, with V representing a failing grade. All of these examples show the subjective, arbitrary, and inconsistent nature with which different institutions graded their students, demonstrating the need for a more standardized, albeit equally arbitrary grading system.