I built CD Calculator – https://cd-calculator.net – a simple tool that helps people calculate interest returns on bank CDs (Certificates of Deposit). Most CD calculators online are either too basic, too outdated, or full of ads. I wanted to make something that's:
- Clean and fast - Easy to use - Focused on accuracy
With this tool, users can: - Enter principal, rate, and term to get instant results - Simulate compound interest monthly or annually - Copy results with one click
Advanced features are coming soon, including: - Recurring deposits - Early withdrawal penalty simulation - After-tax return estimator
It’s built with Astro, Tailwind CSS, and vanilla JavaScript. I’d love feedback on: - Usability (especially on mobile) - Feature ideas or improvements - Accuracy of the calculations
Thanks!