Home Math & Science School Grade Calculator

Grade Calculator

Calculate your current grade and see what you need on the final.

Cumulative GPA: 4.00
Assignments / Exams
Weighted
Points
Name Grade (%) Weight (%)
Total Weight Entered:
0%
Final Exam Calculator
%
You need a
--%
on the Final exam.
"What If" Forecaster
85%
Projected Class Grade: --%
Report Card
--
--
View Grading Scale

How to Use This Calculator

1

Enter Assignment Categories

Add each category (homework, exams, projects) with its weight as a percentage of the total grade.

2

Input Your Scores

For each category, enter the points earned and points possible.

3

View Your Weighted Grade

The calculator combines all categories using their weights to produce your overall course grade.

Formula & Methodology

Weighted Grade

Grade = Σ(category% × category score) / 100

Multiply each category score by its weight percentage and sum the results.

Category Score

Score = (points earned / points possible) × 100

Convert raw scores to a percentage within each category.

Grade Needed

Needed = (Target − Σ(known weighted scores)) / remaining weight

Solve for the score required on remaining work to achieve a target grade.

Key Terms

Weighted Grade
A grade calculated by assigning different importance (weights) to different categories of work.
Category Weight
The percentage of the overall grade that a particular type of assignment represents.
Points Possible
The maximum score attainable on an assignment or in a category.
Curve
An adjustment applied to raw scores, often adding a fixed number of points to every student's grade.
Extra Credit
Additional points beyond the maximum possible, which can raise a grade above the standard ceiling.

Real-World Examples

Example 1

College Course

Homework 20% (95%), Midterm 30% (82%), Final 50% (?)

Need 84% on final to achieve an overall B (83%)

Example 2

High School Class

Quizzes 15% (88%), Tests 40% (78%), Project 25% (92%), Participation 20% (100%)

Overall grade = 87.2% (B+)

Common Grading Scales

PercentageLetter (US)GPADescription
90–100%A4.0Excellent mastery
80–89%B3.0Good understanding
70–79%C2.0Satisfactory
60–69%D1.0Below average
Below 60%F0.0Failing

Strategic Grade Management for Students

Understanding Weighted Categories

Most college courses weight exams more heavily than homework (often 50–70% for exams). This means a poor exam score has a much larger impact than a missed homework assignment. Understanding these weights allows students to prioritize study time where it has the greatest effect on their final grade.

Calculating the Grade You Need

Working backward from a target grade is a powerful planning tool. If you need an 85% overall, and you have earned specific scores in categories totaling 60% of the grade weight, you can calculate exactly what score you need on the remaining 40%. This removes guesswork and helps you set realistic, data-driven study goals.