Base64 ToolsNew
MP3 to Base64
Base64 ToolsNew
Encode MP3 audio into Base64 with optional data URL prefix for inline use.
AK
appkiro.comOutput works as a data:audio/mpeg;base64,... URL when prefix is on.
Encode an MP3 file into Base64. Keep the data: prefix enabled to drop the result into an <audio> tag, or turn it off for a raw payload.
Inlining short audio jingles into single-file demos, embedding voice previews in JSON, or shipping audio fixtures alongside test cases.
For pure-text payloads use the Text to Base64 tool.
Does the file leave my browser?
No. Encoding runs in your tab — nothing is uploaded.
Is there a file size limit?
Practical limits depend on browser memory; encoding is comfortable up to ~50 MB.
Does encoding re-compress audio?
No. The bytes are encoded as-is. Compress the MP3 first if size matters.