Base64 ↔ Hex Converter
Convert Base64 strings to hex byte arrays and back: paste the value, get the result with spaces between bytes. Useful for embedded development and protocol debugging.
Hex
Frequently asked questions
When do I need Base64 in hex?
When working with binary protocols, firmware or cryptography: it is easier to read bytes as hex than as raw Base64 text.
How are bytes separated?
Bytes are separated by spaces; when converting back you can use spaces, commas or write everything together.
Is data uploaded anywhere?
No — conversion happens entirely in your browser with the built-in TextEncoder and atob/btoa functions.