NumPad
A calculator and unit converter for calculations, 1600+ unit conversions, currency conversions, and physics and programming computations with variables and line references
Launch screenshots from Product Hunt, Jun 2025
The product is a web and desktop calculator and unit converter that handles calculations, unit conversions across over 1600 units, currency conversions with up-to-date rates, and physics and programming computations. It is for individual users who need to perform everyday and technical calculations, organize notes, and reference variables and line ranges. It is positioned as easier than a spreadsheet and more than a calculator, delivered as an offline-first web app and Mac app with local storage, cross-device sync, and PDF and HTML export.
Key features
- Unit conversion for 1600+ units
- Currency conversion with exchange rates
- Physics and programming calculations
- Variable definitions and line references
- Markdown support with PDF and HTML export
- Offline-first local document storage
- Cross-device document sync
- Autocomplete for variables and units
- Multi-cursor editing and Vim mode
- Dark mode theme
- No social media activity within the last 30 days
- Newsletter
- Docs
- Consumers general
- Students
- Software developers