What is a Base64 to audio decoder?
A Base64 to audio decoder converts encoded audio bytes back into a playable and downloadable audio file. It supports data URLs and raw Base64 for common formats such as MP3, WAV, OGG, and FLAC.
How to use it
- Paste a Base64 audio string or audio data URL.
- Use auto-detect or choose the expected audio MIME type.
- Preview the audio and download the decoded file.
Example
Input: data:audio/mpeg;base64,//uQZAAAAAAAA...
Output: a downloadable MP3 file.
Common mistakes
- Raw Base64 may not include the audio format.
- Some audio signatures cannot be auto-detected, so choose the MIME type manually.
- Truncated audio payloads may download but fail to play.
Related tools
- Reverse the conversion with Audio to Base64.
- Decode unknown binary data with Base64 to file.
- Validate copied input with the Base64 validator.
Privacy and security
The audio is decoded locally in your browser.