Offline currency converter
Convert an amount between several major currencies using indicative exchange rates built right into the page. It works completely offline, with no network requests at all, so the rates are therefore not updated in real time.
How it works
This tool uses a set of fixed exchange rates, embedded directly in the page code, rather than calling an online service. This guarantees no data is exchanged with an external server, but also means the displayed rates are frozen and approximate rather than updated in real time.
Why aren't the rates real-time?
Byteryo is a 100% client-side tool: no request is sent to a server, including to an exchange-rate API. Getting a live rate would require a network call, which would go against this privacy promise. The rates built in here date from juillet 2025 and serve as a rough order of magnitude, not as an official financial reference.
Can I use this result for a bank transfer or a purchase?
No, you should not use this result for a real financial transaction. Exchange rates fluctuate continuously, and your bank or payment provider usually applies its own fees and margins as well. Always check the rate shown by your bank or a real-time conversion service before any financial transaction.
No network connection is made for this conversion: the rates are embedded locally in the page.