🧮 Free Calculators Web App
An open-source, fast, responsive web app built with Astro, React, and Tailwind CSS, offering a suite of 20+ handy calculators—from GPA converters and RREF matrix tools to BMI, tip splitters, love meters, subnet, volume, and more.
🔗 Live Site: rref-calculator.com/calculators
🚀 Features
- 20+ useful calculators – GPA ↔ percentage, RREF matrix reducer, volume, subnet, BMI, tip, love meter, standard deviation, pregnancy, ZIP lookup, and more.
- Step-by-step solutions – some tools provide detailed breakdowns.
- Fast, responsive UI – powered by Tailwind CSS and Astro's optimized delivery.
- 100% free and privacy-friendly – no signups, no hidden fees.
- Modular structure – easily add or modify calculator tools.
🧱 Tech Stack
| Purpose | Tech Used |
|---|
| Static Site Gen | Astro |
| Interactivity | React |
| Styling | Tailwind CSS |
| Deployment Ready | Vercel, Netlify compatible |
📁 Project Structure
/
├── public/ # Static assets (icons, images)
├── src/
│ ├── components/
│ │ ├── calculators/ # Individual calculator components
│ │ └── ui/ # Reusable UI components
│ ├── layouts/ # App layout components
│ ├── pages/ # Astro page routes
│ └── styles/ # Tailwind and global CSS
├── astro.config.mjs # Astro config
├── tailwind.config.cjs # Tailwind config
├── package.json
└── README.md
🛠️ Getting Started
Prerequisites
Local Setup
git clone https://github.com/strongSoda/free-calc.git
cd free-calc
yarn
yarn dev
Visit http://localhost:PORT in your browser.
Build for Production
yarn build
➕ Adding a New Calculator
- Create a new file in
src/components/calculators/YourCalculator.jsx
- Implement your logic and UI using React
- Add a route page in
src/pages/calculators/your-calculator.astro
- Link it in the footer or sitemap
📈 Future Enhancements
🤝 Contributing
Contributions are welcome!
# Fork the repo
git checkout -b feat/your-feature
git commit -m "Add your feature"
git push origin feat/your-feature
# Open a Pull Request
Please include relevant screenshots or test cases.
📄 License
This project is licensed under the MIT License.
🙏 Credits
Happy calculating!
