FormatShiftConvert Audio Online
Convert audio to MP3, WAV, OGG and more safely inside your browser.
Drop audio here
Online Audio Converter: MP3, WAV, AAC, FLAC, OGG
Convert audio files across popular formats with custom bitrate settings right inside your browser.
Converts audio streams across major formats: MP3, WAV, AAC, FLAC, OGG, and M4A with customizable bitrate (128 to 320 kbps) powered by FFmpeg audio engine.
🎯 Exact Technical Outcome: What Happens to Your File
Sample rate preserved or resampled
Audio stream encoded at target bitrate
Core ID3 tags transferred
5–10x file size reduction when converting WAV to MP3
How It Works
Select Audio
Upload audio file.
Set Format
Choose format and bitrate.
Encoding
FFmpeg re-encodes track.
Download
Save output audio.
When to Use
- ✓Converting studio WAV files into 320 kbps MP3
- ✓Converting voice memos (M4A / Opus) to MP3
- ✓Audio track preparation for video editing and web
Related Tasks & Workflows
Frequently Asked Questions
FormatShift utilizes client-side WebAssembly compiling the FFmpeg engine directly inside your web browser. Audio decoding and re-encoding occur purely in device RAM without network uploads.
WAV is an uncompressed lossless PCM container offering reference studio quality. MP3 is a perceptually optimized lossy codec reducing file size by 75–90% while retaining transparent fidelity at 320 kbps.
Yes, expand the Advanced Settings drawer to choose target bitrates from 128 kbps (speech/podcasts) up to 320 kbps (audiophile music).
Yes, FormatShift handles Apple M4A/AAC, WhatsApp Opus/OGG, FLAC, and WAV, transcoding them into universally compatible MP3.
There are no server bandwidth or duration caps. The conversion speed depends entirely on your local CPU capability.
In-Browser Local Processing
In-browser client processing — your files never leave your device.