Hi HN! I built this grade calculator to solve a problem I had in college. Every semester before finals, I'd spend time with a spreadsheet calculating "what grade do I need on the final to get an A in this class?" I figured students still deal with this, so I made a simple tool. Features: - Final grade calculator (what score you need) - Weighted grade calculator (multiple assignments with different weights) - Grade converter (percentage ↔ letter grade ↔ GPA) - Real-time calculations, works offline after first load Tech stack: Next.js 15 (App Router), TypeScript, Tailwind CSS. Fully static site, deployed on Vercel. The code is open source (link in footer). I focused on making it fast and accessible – no tracking, no accounts, just a calculator. Happy to answer questions about the implementation or get feedback on features!Comments URL: https://news.ycombinator.com/item?id=45633542Points: 1# Comments: 0