•
converted to MP3
Drop audio tracks here or click to browse
Supports WAV, M4A, AAC, OGG, FLAC, WebM, AIFF, and MP3. Batch selection supported.
OPTIONAL AUDIO TRIM
MP3 Output Settings CBR ENCODING
Device-Only Processing
Audio decoding and MP3 encoding run directly in your browser tab through the native Web Audio API and LameJS Web Workers. No sound files are ever transmitted to any external server.
How to Convert Audio to MP3
1
Add Audio Tracks
Drop WAV, M4A, OGG, FLAC, AAC, or WebM files onto the stage.
2
Select Bitrate
Pick from 64 kbps up to studio-grade 320 kbps CBR.
3
Trim or Tag
Optionally cut an audio segment and input ID3 title, artist, and album tags.
4
Download MP3
Click Convert to encode and save individual MP3 files or a single ZIP.
Audio Format Comparison
| Format | Compression | Typical Bitrate | Compatibility | Best For |
|---|---|---|---|---|
| MP3 | Lossy (MPEG-1 Layer 3) | 128 - 320 kbps | Universal (100%) | Music, podcasts, wide distribution |
| WAV | Uncompressed (Linear PCM) | 1411 kbps | Very High (98%) | Studio recording, mastering, editing |
| M4A / AAC | Lossy (Advanced Audio Coding) | 128 - 256 kbps | High (Apple / Android) | iPhone voice memos, streaming |
| FLAC | Lossless | 700 - 1000 kbps | Moderate | Audiophile archives, CD preservation |
| OGG | Lossy (Vorbis / Opus) | 96 - 256 kbps | Web / Gaming | Game soundtracks, web audio |
Frequently Asked Questions
You can convert WAV, M4A, AAC, OGG, FLAC, WebM, AIFF, and MP3 files. All decoding is handled in your browser via the native Web Audio API.
For music tracks where audio detail matters, select 320 kbps or 256 kbps. For typical daily listening and balanced file sizes, 192 kbps is ideal. For voice recordings, speeches, or audiobooks, 128 kbps or 96 kbps provides crisp clarity with minimal file size.
No. The entire conversion process occurs on your computer or mobile device. The tool runs open-source LameJS inside a background Web Worker without external uploads.
Yes. You can select multiple tracks at once. They will convert sequentially to keep your browser fast, and you can download each MP3 or download all of them in a single ZIP archive.