final-grade-calculator

Final Grade Calculator

A comprehensive, SEO-optimized web application for calculating final grades, weighted grades, and grade conversions. Built with Next.js 15, TypeScript, and Tailwind CSS.

Live Site

Explore the hosted experience at finalgradecalculator.app.

Features

Core Calculators

• Final Grade Calculator - Calculate what grade you need on your final exam to achieve your target grade
• Weighted Grade Calculator - Handle complex grading systems with multiple assignments and custom weights
• Grade Converter - Convert between percentages, letter grades (A-F), and GPA (4.0 scale)

Key Features

• Real-time calculations as you type
• Interactive charts and visualizations (powered by Recharts)
• Intelligent grade suggestions (easy/moderate/hard/impossible)
• Mobile-responsive design
• Dark mode support
• SEO-optimized with proper meta tags, structured data, and content

SEO Content Pages

• How to Calculate Final Grade (comprehensive guide)
• Grade Calculator Guide
• Weighted vs Unweighted Grades
• College Grading Systems
• What Grade Do I Need? (FAQ)
• Calculators Index (tool aggregation)

Tech Stack

• Framework: Next.js 15 with App Router
• Language: TypeScript
• Styling: Tailwind CSS 4
• Charts: Recharts
• Icons: Lucide React
• Fonts: Inter (Google Fonts)

SEO Features

• Title optimization (40-60 characters)
• Meta descriptions (140-160 characters)
• Canonical URLs (absolute paths to https://finalgradecalculator.app/)
• Keyword density control (3-5%)
• Content length >800 words on key pages
• Robots.txt and sitemap.xml included
• Open Graph and Twitter Card support

Getting Started

Prerequisites

• Node.js 18+
• npm, yarn, pnpm, or bun

Installation

# Install dependencies
npm install

# Run development server
npm run dev

# Build for production
npm run build

# Start production server
npm start

Open http://localhost:3000 to view the application.

Project Structure

final-grade-calculator/
├── app/                          # Next.js App Router pages
│   ├── page.tsx                 # Home (Final Grade Calculator)
│   ├── weighted-grade-calculator/
│   ├── grade-converter/
│   ├── how-to-calculate-final-grade/
│   ├── grade-calculator-guide/
│   ├── weighted-vs-unweighted-grades/
│   ├── college-grading-systems/
│   ├── what-grade-do-i-need/
│   ├── calculators/
│   ├── layout.tsx               # Root layout with Header/Footer
│   └── globals.css              # Global styles with custom CSS variables
├── components/                   # React components
│   ├── Header.tsx
│   ├── Footer.tsx
│   ├── FinalGradeCalculator.tsx
│   ├── WeightedGradeCalculator.tsx
│   └── GradeConverter.tsx
├── lib/                         # Utility functions
│   ├── gradeCalculations.ts    # Grade calculation logic
│   └── seo.ts                  # SEO metadata helpers
├── public/                      # Static assets
│   ├── logo.png
│   ├── robots.txt
│   └── sitemap.xml
└── PRODUCT_PLAN.md             # Product requirements document

Deployment

Vercel (Recommended)

This project is optimized for deployment on Vercel:

1. Push your code to GitHub
2. Import the repository in Vercel
3. Configure environment variables if needed
4. Deploy

Other Platforms

The site can be deployed on any platform that supports Next.js:

• Netlify
• AWS Amplify
• Digital Ocean
• Railway
• Render

Configuration

Domain Setup

Update the canonical URL in /lib/seo.ts:

const BASE_URL = 'https://finalgradecalculator.app';

Google Site Verification

Add your verification code in /app/layout.tsx:

verification: {
  google: "your-google-site-verification-code",
}

Sitemap

The sitemap is located at /public/sitemap.xml. Update the lastmod dates after making content changes.

Customization

Brand Colors

Update brand colors in /app/globals.css:

:root {
  --primary: #0EA5E9;      /* Main blue */
  --primary-dark: #0369A1;  /* Dark blue */
  --primary-light: #7DD3FC; /* Light blue */
}

Grading Scale

Modify the grading scale in /lib/gradeCalculations.ts to match your institution’s standards.

Performance

• All pages are statically generated at build time
• Optimized images with Next.js Image component
• Minimal JavaScript bundle size
• Fast Time to First Byte (TTFB)

SEO Best Practices

• Proper heading hierarchy (H1 > H2 > H3)
• Descriptive alt text for images
• Internal linking structure
• Mobile-first design
• Fast page load times
• Semantic HTML

License

This project is open source and available for educational purposes.

Support

For issues or questions, please check the documentation or open an issue in the repository.