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AVERAGE OF EVERY SCORE

Average Grade Calculator

Enter the grades you have so far and the calculator returns the average percentage and the matching letter grade, together with the highest, lowest, and median score so you can see how steady the marks are.

Standard A–F scale · Updated October 12, 2026

Average grade calculator

Add every grade you have so far and read the average and letter grade.

Average gradeB+
88.5%
SUMMARY

4 grades entered

standard US scale
MeasureValueLetter grade
Average88.5%B+
Highest95%A
Lowest79%C+
Median88%B+
Total points354 (4 × 100 possible)
QUICK ANSWER

To find an average grade, add every score and divide by the number of scores. Four grades of 88, 92, 79 and 95 average to 88.5%, which is a B+ on the standard US scale.

Average grade vs. weighted grade

A plain average treats every score as equal. Most courses do not work that way: homework might be 20% of the grade, quizzes 30%, and the final exam 50%. In that setup a low exam score moves the grade far more than a low homework score, so an average can flatter a grade that is really lower. Use the gradebook calculator when the syllabus lists category weights, and a plain average when every assignment is worth the same.

How to raise an average grade

The fastest way to lift an average depends on how many scores are already counted. With only a few grades, a single strong result moves the average a lot; late in the term the same result barely shifts it. Two practical steps: find the score you need on the next test with the grade calculator, and check whether the course uses weighted or unweighted grading before deciding where to put your effort.

Turning an average into a letter grade

On the standard US scale an average of 90% or above is an A−, 80–89% is a B, 70–79% is a C, 60–69% is a D, and anything below 60% is an F. Many schools use a different scale, so confirm the thresholds with the grading scale reference. To convert an average into grade points, see the GPA calculator.

COMMON QUESTIONS

Average grade: FAQ

How do you calculate an average grade?+

Add every grade together, then divide by the number of grades. Four scores of 88, 92, 79 and 95 add up to 354, and 354 ÷ 4 gives an average of 88.5%, a B+ on the standard US scale.

Does an average grade treat every assignment equally?+

Only when each assignment is worth the same. An average ignores weight, so a 10-point quiz counts as much as a 200-point exam. For weighted categories such as homework 20%, quizzes 30% and exams 50%, use the gradebook calculator instead.

What is the difference between an average and a weighted grade?+

An average sums the scores and divides by how many there are. A weighted grade multiplies each score by the share of the final grade it is worth first. A 60% exam pulls a weighted grade much further than it moves a plain average.

What average grade do I need to keep a B?+

A B runs from 83% to 86% on the standard scale, so an average of 83% or higher keeps the B. Below 83% the average drops to a B−, and below 80% it falls to a C+.

Can I average letter grades?+

You can, but convert each letter to its GPA value first (A = 4.0, A− = 3.7, B+ = 3.3, and so on), average those numbers, then map the result back to a letter. Averaging letter labels directly gives the wrong answer.

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