Offline Currency Converter

Offline Currency Converter
is a free and open-source currency converter for Android. Convert between 160+ currencies using the latest downloaded exchange rates — even when you are offline.
Ideal for travel, shopping, international payments, or anyone who needs a simple currency calculator without relying on a permanent internet connection.
Offline currency conversion
Download exchange rates and perform currency conversions directly on your device. Once rates are synchronized, conversions work completely offline.
Exchange rates
Rates are provided by the Frankfurter API using European Central Bank reference data. Choose how often rates are synchronized, from every 6 hours to weekly, or update them manually.
Features

• Currency converter — convert between 160+ currencies
• Offline mode — convert currencies without an internet connection after syncing
• Exchange rates — use European Central Bank reference rates
• Favorites — quickly access your most-used currencies
• Multi-currency conversion — compare several currencies at once
• Historical exchange rates — view 7, 30, and 90-day rate charts
• Exchange rate charts — interactive charts with date and rate information
• Home screen widget — see a currency pair directly from your home screen
• Automatic synchronization — keep exchange rates up to date in the background
• Manual synchronization — update rates whenever you want
• Privacy-focused — no account, no ads, no tracking, and no analytics
• Open source — licensed under AGPLv3
• 13 languages — ar, de, es, fr, hi, it, ja, ko, nl, pl, pt, ru, zh

Privacy
Currency conversion happens on your device. Network access is only used to synchronize exchange rates. No account is required and the app does not contain advertising, analytics, or tracking.
Free and open source
Offline Currency Converter is free software released under the AGPLv3 license.