Free Audio Converter
Convert audio files between MP3, WAV, FLAC, OGG, M4A, AAC, OPUS, and AIFF. Adjust bitrate, sample rate, and channels. All processing happens in your browser — no upload, 100% private.
MP3, WAV, FLAC, OGG, M4A, AAC, WMA, OPUS, AIFF
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Conversion complete!
Supported Formats
Why Use This Tool?
100% Private
Audio stays in your browser. No upload to any server. Files never leave your device.
8 Output Formats
Convert to MP3, WAV, FLAC, OGG, M4A, AAC, OPUS, or AIFF — all major audio formats.
Adjustable Quality
Control bitrate (64-320 kbps), sample rate (22-96 kHz), and channels (mono/stereo).
No Sign-Up
Start converting immediately. No account, no email, no watermarks, no limits.
No File Size Limit
Convert files of any size. Limited only by your browser's memory.
Free Forever
No hidden costs, no premium tiers. All features completely free, unlimited usage.
How to Convert Audio Online
- Upload your audio file by clicking or dragging it into the dropzone
- Choose output format — MP3 for universal compatibility, WAV/FLAC for lossless, OPUS for best compression
- Adjust quality — set bitrate, sample rate, and channel options
- Click Convert — processing starts instantly in your browser
- Download your converted audio file when ready
Common Use Cases
- Music Lovers: Convert FLAC to MP3 for portable players and phones
- Podcasters: Convert WAV recordings to MP3 for distribution
- Producers: Convert between WAV, AIFF, and FLAC for different DAWs
- Web Developers: Convert audio to OPUS for smallest web-friendly files
- iPhone Users: Convert to M4A (AAC) for iTunes and Apple devices
Frequently Asked Questions
Is my audio uploaded to a server?
No. All processing happens entirely in your browser using FFmpeg WebAssembly. Your audio files never leave your device. No data is transmitted to any server.
What is the best format for maximum compatibility?
MP3 at 320 kbps is the most universally compatible format and works on every device, media player, and platform.
Does conversion reduce audio quality?
Converting between lossless formats (WAV, FLAC, AIFF) preserves 100% quality. Converting from lossless to lossy (MP3, AAC) reduces file size with minimal perceptible loss at high bitrates. Converting lossy to lossy may further reduce quality.
Is there a file size limit?
There is no hard limit. Very large files are limited only by your browser's available memory. Typically files up to 2GB work well.
What bitrate should I use for music?
192 kbps provides a good balance of quality and file size. 320 kbps is virtually indistinguishable from the original for most listeners.
Can I convert multiple files at once?
Currently one file at a time. Batch conversion is planned for a future update.