Converter Ultra is your offline-ready unit converter and currency converter in one app. Convert length, mass, volume, temperature, area, speed, time, data, pressure, energy, power, and more, plus live reference exchange rates for travel and shopping. One-time purchase. No ads. No subscription.
Unit converter (metric, imperial, and more)
- Length (m, km, ft, in, mi), mass (kg, lb, oz), volume (L, gal, cup), temperature (C, F, K)
- Area, speed (mph, km/h, knots), time, data (MB, GB), pressure, energy, power, force, torque, frequency, density, angle, illuminance, fuel economy, data rate
- Search categories, pin favorites, set a base unit, copy full or numeric results in one tap
- Core unit math works fully offline; no network needed for measurements
Currency converter and exchange rates
- Convert USD, EUR, GBP, JPY, CNY, KRW, and other major world currencies
- Exchange rate and last-updated time always on screen
- Offline mode uses cached rates, clearly labeled
- Frankfurter reference rates (not financial or investment advice)
- Optional Wi-Fi-only rate refresh
Reference lookup tables
- Shoe size, ring size, and clothing size charts
- Paper sizes (A4, Letter), AWG wire gauge, baking amount conversions
- Handy for shopping, cooking, and engineering reference; values may vary by brand
Quick Convert widget and calculator keypad
- Home-screen widget shows your default amount and currency pair
- Tap the widget to jump straight to Currency
- Built-in keypad for fast number entry on unit and currency screens
Display, themes, and 12 languages
- Light, dark, or follow-system theme
- English, Simplified Chinese, Traditional Chinese, Japanese, Korean, Spanish, French, German, Portuguese, Russian, Arabic, Hindi
- Decimal places, thousand separators, scientific notation, compact or comfortable list density
Who it is for
Travelers checking FX rates, students learning metric vs imperial, home cooks converting cups and grams, shoppers matching shoe or ring sizes, and light engineering work. Anyone who wants a clean conversion calculator without ads or subscriptions.
Why Converter Ultra
- One-time purchase, full access
- No ads, no ad tracking, no account sign-in
- Offline unit conversion anytime
- Transparent currency labels (rate and update time)
- Large input, instant multi-unit results
Privacy
Network is used only to refresh exchange rates and open the privacy policy. No ads. No sale of personal data.
Exchange rates are for reference only and may be delayed when offline.
