Audio to Base64 Encoder & Decoder

Upload audio files like MP3 or WAV and convert them to Base64, or decode Base64 strings back into audio.

Encode Audio to Base64

Step 1: Upload Audio File

FAQ: Audio & Base64

🎧 What is Base64-encoded audio?

Base64 encoding transforms binary audio files into plain-text strings. This is useful for embedding audio into HTML, JSON, or text-based formats that don't support binary files directly.

🔄 Which audio formats are supported?

Most modern browsers support encoding/decoding of common audio formats like MP3, WAV, OGG, and AAC. The tool accepts any file type supported by your browser's FileReader API.

📦 Are there size limitations?

Yes. Since Base64 increases the size by ~33%, large audio files may result in very long strings. For best performance, keep files under 5–10 MB, especially on slower devices or browsers.

Want to try another tool?

Use our Base64 audio decoder for base64 to audio conversion.

Use our Base64 text encoder for text conversion.