Gpa Calculator MCP server

GPA Calculator MCP

Ask your AI to work out your GPA, convert grades between letters and percentages, and figure out what you need on the final. The math is done by tested code, not guessed by the model.

This is a free, open source MCP server. It works with Claude, ChatGPT, Cursor, VS Code Copilot and any other app that supports MCP. It runs on your computer, needs no internet and no login, and never sees your school account.

Free forever. No account and no subscription.

Quick start

Add this to your AI app's MCP config. For Claude Desktop that is claudedesktopconfig.json.

{
  "mcpServers": {
    "gpa": {
      "command": "npx",
      "args": ["-y", "gpa-calculator-mcp"]
    }
  }
}

Restart your AI app, then try one of the questions below. You need Node.js 20 or newer.

For Claude Code, run claude mcp add gpa -- npx -y gpa-calculator-mcp.

What you can ask

• "What's my GPA if I got an A in 3 credits, a B+ in 4 credits and a C in 3 credits?"
• "What do I need on the final to get an 80 if it's worth 40% and I'm at 74 right now?"
• "Convert 78 percent to a letter grade on the Ontario college scale."
• "I have a 3.1 GPA over 60 credits. What GPA do I need next semester to reach 3.4?"
• "My course is 20% quizzes, 30% labs, 50% exam. I have 85 on quizzes and 70 on labs. What's my grade so far and what's the best I can finish with?"

Tools

Grade scales

Schools differ. Run list_scales to see the exact table used, and tell your AI if your school's cutoffs are different.

Development

npm install
npm run build
npm test

The tests call every tool through a real MCP client, so they need no account or network.

More free student MCP servers

All free, open source and read only where they touch your accounts. Browse the full list at brightspacemcp.com/more-mcps.

Shortened. The full README is on GitHub.