Nathaniel Calculator
Daily calculations, engineered for real work.
A fast, installable calculator workspace with scientific functions, history, favorites, manual currency rates, and offline support.
Free, private, no login
Dashboard
Saved locally on this device.
Pin calculations you use often.
Configurable result rounding.
Quick formula
Expression workspace
Result
12.5
Recently used
Formula shortcuts
Conversion center
Units, rates, and everyday measurements
Converted value
1
Manual currency
Offline exchange rates
Rates are stored locally. Set each currency value relative to 1 USD, then convert privately offline.
Audit trail
Calculation history
Saved work
Favorites and named calculations
Appearance
Theme and display
Data
Privacy-first storage
Everything stays on this device unless you export it. There is no login, tracking, ads, or remote account system.
Help center
How to use Nathaniel Calculator
Use normal math notation: 2*(3+4), sqrt(81), sin(30), 5!, or pow(2, 8). Set angle mode in Scientific.
Install the app from the sidebar to keep it available offline after the first visit.
FAQ
Common questions
Does this use paid APIs?
No. Currency rates are manual so the app stays free and offline-friendly.
Where is my data stored?
History, favorites, settings, and rates are stored locally in your browser.
Can I deploy this for free?
Yes. It is a static site suitable for GitHub Pages, Netlify, Vercel, or any static host.
About
Built for dependable daily use
Nathaniel Calculator is a no-account, no-ad calculator workspace focused on speed, accessibility, privacy, and maintainability.
Contact
Support
For a deployed public version, replace this section with your support email or issue tracker. The app has no backend contact form by design.
Privacy Policy
Private by default
No personal information is collected by this static app. Browser storage is used only for local app preferences and saved calculations.
Terms
Use responsibly
Results are provided for general productivity. Verify critical financial, medical, legal, or engineering decisions with appropriate professional tools.
Changelog
Version 1.0.0
Initial production-ready static PWA with calculators, converters, history, favorites, settings, and offline support.