Free Online Base64 to Audio Decoder | Convert Base64 to MP3, WAV, OGG
This free online tool lets you decode Base64-encoded audio data back into playable audio files directly in your browser. Simply paste a Base64 string (with or without the data:audio/...;base64, prefix), select the audio format, and click the Decode button. The tool will instantly convert it into an audio file that you can play in the built-in player or download to your device. Base64 audio encoding is commonly used in data URIs embedded in HTML, JSON APIs, or email attachments. This tool makes it easy to extract and listen to the audio without any server-side processing — everything runs locally in your browser for maximum privacy and speed. Common use cases include decoding audio data from web APIs, extracting audio from data URIs in source code, converting embedded audio from emails or documents, and testing Base64-encoded audio payloads. Supported formats include MP3, WAV, OGG, M4A (AAC), FLAC, and WebM.