Grade Calculator for Weighted Averages, GPA, and Final Exams
This grade calculator is an all-in-one academic tool that figures out your weighted grade average, your semester GPA, and the exact score you need on a final exam. Type your numbers and every result updates instantly, with no sign-up and nothing to install.
It bundles three calculators behind simple tabs: a Grade Calculator for weighted averages across assignments, quizzes, and exams; a GPA Calculator for your semester and cumulative GPA on the standard 4.0 scale; and a Final Grade calculator that answers "what grade do I need on my final?" It is built for high school and college students, parents tracking progress, and anyone working out weighted grades or GPA.
How to Use the Grade Calculator
Weighted grade average
On the Grade Calculator tab, name each assignment (optional) and enter its grade (0–100) and weight (%). Click Add Row for more items, and your weighted average plus letter grade update as you type. The Total indicator turns green when your weights reach exactly 100%, amber when under, and red when over.
Semester and cumulative GPA
On the GPA Calculator tab, enter each course name, pick a letter grade from the dropdown, and add its credits. Your semester GPA computes automatically on the 4.0 scale. Expand Cumulative GPA and enter your current GPA and prior credits to combine them into an overall GPA.
Score needed on the final
On the Final Grade tab, enter your current grade, the final exam weight (its share of your total grade), and your desired grade. The calculator shows the minimum score you need, and tells you whether the target is already met, achievable, or out of reach.
Compare targets and check the scale
The Quick Reference table lists the scores needed for A, B+, B, C+, C, and D so you can weigh your options at a glance. Open the grade scale chart at the bottom to see every letter grade with its percentage range and GPA value.
Features
Weighted Grade Calculator
Add or remove assignment rows with one click and enter a custom weight for each one to find your weighted average.
Letter Grade Display
Your average is matched to a letter grade from A+ down to F and shown right beside the score.
Weight Validation
A color-coded total shows green at 100%, amber when your weights fall short, and red when they go over.
GPA on the 4.0 Scale
Choose a letter grade per course and weight it by credits to calculate your semester GPA on the standard 4.0 scale.
Cumulative GPA
Optionally fold in your prior GPA and credit hours to merge this term with your record for an overall GPA.
Final Exam Grade Needed
Enter your current grade, the final's weight, and a target to see the minimum score you need on the exam.
Quick Reference Table
See the required final score for several grade targets at once, color-coded as easy, hard, or impossible.
Feasibility Check
Each result tells you whether your goal is already achieved, still achievable, or beyond what the final can fix.
Grade Scale Reference
A collapsible chart lists every letter grade with its percentage range and matching GPA value.
Live Calculation
Every average, GPA, and required score recalculates instantly as you type, with a reset button to start over.
Frequently Asked Questions
How do I calculate my weighted grade?
The weighted average multiplies each grade by its weight, adds those products together, and divides by the total weight. For example, if Homework (85) carries 20% and the Final (92) carries 50%, the result is (85 × 20 + 92 × 50) ÷ (20 + 50) = 89.71. On the Grade Calculator tab this happens automatically as you fill in the rows.
What grade do I need on my final to pass?
Use the Final Grade tab. It applies the formula Needed = (Desired − Current × (1 − Weight)) ÷ Weight. For example, with a current grade of 85%, a final worth 40%, and a 90% target, you need (90 − 85 × 0.6) ÷ 0.4 = 97.5%. If the required score comes out above 100% the calculator flags the target as not achievable on the final alone.
How do I calculate GPA from my grades?
On the GPA Calculator tab, pick a letter grade for each course and enter its credits. Each grade maps to a point value on the 4.0 scale, the calculator multiplies points by credits, sums them, and divides by the total credits to give your semester GPA.
What GPA scale does this use?
It uses the standard US 4.0 scale: A+ and A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, D− = 0.7, and F = 0.0. The same values appear in the collapsible grade scale chart.
Do my weights need to add up to 100%?
Not necessarily. The calculator divides by whatever total weight you enter, so it still works if your weights are partial. The Total indicator simply turns green at exactly 100% to help you confirm your weights match your syllabus.
What does cumulative GPA mean?
Cumulative GPA combines this semester with your past record. Expand the Cumulative GPA section and enter your current GPA and the credit hours you have already earned; the calculator merges those with your current courses to show your overall GPA.
Are my grades saved or sent anywhere?
No. Every calculation runs locally in your browser. Nothing is stored on a server and your grades, courses, and GPA are never transmitted anywhere.
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