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Base64 converter●
Encode text to Base64 or decode it back. Unicode and URL-safe included.
The result updates as you type. Nothing is sent anywhere.
Result
Conversion happens on your device. Your text is never uploaded or stored.
What Base64 is for
Base64 turns bytes into plain letters and digits so they can travel in emails, URLs and JSON. It is an encoding, not encryption, so anyone can decode it.
JSON formatter →Common questions
Is Base64 encryption?
No. Anyone can decode it. Never use it to protect secrets.
What is URL-safe Base64?
It replaces + and / with - and _ so the result can sit in a URL or file name without escaping.
Does it support accents and emoji?
Yes. Text is converted as UTF-8, so Cyrillic, accents and emoji round-trip correctly.
Why does decoding fail?
The input may contain spaces or characters outside the Base64 alphabet, or be cut short. Check for a missing end.