CalcKit
A free, offline-first calculator, converter, and health tools PWA. No account, no tracking, no network required.
Features
- Basic — a full-featured calculator with expression display, history, and keyboard support.
- Converter — unit conversion across length, mass, temperature, currency, and more.
- Health — BMI, BMR, and other health calculators.
- Tools — everyday utilities and quick calculations.
How to Use
- Open the app and pick a tab: Basic, Converter, Health, or Tools.
- Type or tap to enter values. Results update instantly.
- Install the app (browser → Install / Add to Home Screen) for offline use.
Privacy
- Everything runs locally in your browser.
- No data is sent to any server.
- Works fully offline after the first visit.
License
MIT — do whatever you want. Attribution appreciated.