Supported audio formats
| Format | Type | Best use case | Max quality |
|---|---|---|---|
| MP3 | Lossy | Music, podcast, streaming | 320 kbps |
| WAV | Lossless | Studio recording, editing | Uncompressed |
| FLAC | Lossless | Archiving, Hi-Fi | Uncompressed |
| AAC | Lossy | Apple devices, YouTube | 256 kbps |
| OGG | Lossy | Games, web (open source) | 320 kbps |
| Opus | Lossy | VoIP, video conferencing | 192 kbps |
| M4A | Lossy | iTunes, Apple Music | 256 kbps |
| AIFF | Lossless | macOS, professional audio | Uncompressed |
How to convert audio
Upload audio file
Choose or drag an audio file (or a video to extract the audio track).
Choose format and quality
Choose output format, bitrate, and sample rate if needed.
Download
FFmpeg converts the file. Download the result directly.
Frequently asked questions
What's the difference between lossless and lossy audio?
Lossless (WAV, FLAC, AIFF) keeps all audio data — perfect for editing and archiving, but produces large files. Lossy (MP3, AAC, OGG) compress the file by removing sound most people can't hear — much smaller files, slightly reduced quality.
Can I extract audio from a video file?
Yes! Upload an MP4, MKV, AVI, or MOV file and choose an audio format. FFmpeg automatically extracts the audio track.
Which bitrate should I choose for MP3?
320 kbps — highest quality, hard to distinguish from the original. 192 kbps — good quality for most. 128 kbps — acceptable for speech and background music.
What is sample rate?
44.1 kHz is the CD standard, used for music. 48 kHz is the professional standard for video and film. 22 kHz is sufficient for speech and reduces file size.
Do I lose audio quality converting from FLAC to MP3?
Yes, a slight quality reduction occurs. Choose 320 kbps for the best result. Converting from lossy to lossless (MP3 → FLAC) does not restore quality that's already lost.
How long are files stored?
All files are deleted automatically after 1 hour. We never read or share your audio files.
What is an audio converter?
An audio converter lets you change a file's format and quality. Konvertio uses FFmpeg to convert between MP3, WAV, FLAC, AAC, OGG, Opus, and many other formats. You can also extract the audio track from videos in MP4, MKV, or MOV format.
Choose the right audio format
- MP3 — universalt format for musikk og podkast. Passer til alle enheter.
- FLAC — lossless compression. Best for archiving and Hi-Fi listening.
- WAV — uncompressed audio. Used in studios and professional editing.
- AAC — better quality than MP3 at the same file size. Standard on Apple devices.
- OGG / Opus — open-source formats. Used in games and web apps.
Related services
Working with other file types? See also: Video Converter (MP4, AVI, MOV) · Image Converter (JPG, PNG, WebP) · API for automation