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Base64 Encoder / Decoder

Convert text to and from Base64 — unicode-safe, standard or URL-safe alphabet.

Encoding with the standard alphabet (+ and /), UTF-8 bytes — the input is used exactly as typed, never trimmed.

You paste
Paste or type — encoding runs as you type
Encoded
Result appears here as you type
Files

Encode any binary file (up to 50 MB) to Base64 text, or decode a Base64 text file (up to 50 MB of decoded bytes) back to a download — processed in chunks in this tab, nothing uploaded.

Binary files never touch the text panel — they are chunked in memory.
Nothing in yet

Paste, drop, or type to begin. Everything stays on this device.

Next door in Encoding

All encoding tools