Description
Welcome to HappyCodex, your go-to platform for web tools and open-source projects!
Explore our powerful, easy-to-use Grade Calculator App Using HTML, CSS and JavaScript, crafted for students who want to take control of their academic performance—with zero manual math!
What is the Premium Grade Calculator?
The Premium Grade Calculator App Using HTML, CSS and JavaScript is an all-in-one academic companion designed to help students track, manage, and improve their grades effortlessly. Whether you’re preparing for finals or calculating your semester GPA, this app provides real-time grade predictions, GPA tracking, and beautiful visual charts — all in a responsive modern interface.
Key Features
Three Calculators in One
- Current Grade Calculator
Input assignments, quizzes, and exam weights to instantly see your current average. - Final Grade Predictor
Enter your desired final grade and exam weight — the app tells you exactly what you need to score. - GPA Calculator
Add courses, credits, and grades to calculate your semester or cumulative GPA.
Interactive & Student-Friendly
- Real-time grade updates
- Visual progress charts using Chart.js
- Color-coded grade output (A, B, C…)
- Toast notifications for instant feedback
Data Control & Storage
- Save and load data using localStorage
- Import/export your courses in JSON format
- Reset your session anytime with a single click
Sleek & Responsive UI
- Optimized for desktop, tablet, and mobile
- Smooth tab-based navigation
- Icons powered by Font Awesome
- Built using HTML5, CSS3, and modern JavaScript (ES6+)
Sample Screenshots
-
Landing Page: Clean and welcoming layout
-
Final Grade Predictor: See what you need in one glance
-
GPA Calculator: Visual breakdown of academic performance
How to Run This Project
- Download the source code (ZIP) from HappyCodex
- Extract the ZIP file
- Open the
.htmlfile in your browser - You’re all set — start calculating your grades!
Technologies Used
| Area | Tools Used |
|---|---|
| Frontend | HTML5, CSS3 (Flexbox), JavaScript (ES6) |
| Libraries | Chart.js, Font Awesome |
| Browser APIs | localStorage, File API |
How It Works
➤ Current Grade Calculator
- Enter course name
- Add items with their weights (e.g., Midterms – 30%)
- Get automatic calculation + letter grade
- Option to save your progress
➤ Final Grade Predictor
- Input your current average
- Set desired final grade & exam weight
- App calculates what you need on your final
- Visual bar graph comparison
➤ GPA Tracker
- Enter course details: name, credit hours, letter grade
- Get GPA result + performance label (Excellent, Good, etc.)
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Conclusion
The Premium Grade Calculator App Using HTML, CSS and JavaScript is more than just a tool — it’s your academic assistant. With clean visuals, smart automation, and mobile-ready design, it helps students make informed, data-driven decisions in real time.
Whether you’re tracking one subject or managing a full semester, GradeMaster by HappyCodex is your ultimate academic sidekick.
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