Convert audio between MP3, WAV, FLAC, OGG, M4A & AAC

Audio formats split into two families: lossless (WAV, FLAC) for editing and archiving, and lossy (MP3, AAC, OGG) for sharing and portable listening. The right conversion depends on the destination — MP3 plays on every device ever made, FLAC archives music at half of WAV's size with zero quality loss, and extracting MP3 from MP4 turns video soundtracks into listen-anywhere audio.

MP3
WAV
OGG
FLAC
M4A
AAC

From

In-browser audio limit: 200 MB per file

Browser-based processing — your files never leave your device

All audio conversions (12)

Every audio conversion pair JoltFile supports, each with a step-by-step guide, a side-by-side format comparison, and answers to common questions.

Audio conversion questions, answered

What's the best audio format for music?

FLAC for archiving and serious listening (lossless, 30–50% smaller than WAV), MP3 at 256–320 kbps for maximum device compatibility, and AAC/M4A inside the Apple ecosystem. Most people keep a lossless master and a lossy portable copy.

What's the difference between WAV and FLAC?

Both are lossless, but FLAC compresses the audio 30–50% while WAV stores it raw. FLAC also supports proper metadata tags and integrity checksums. For archives, FLAC is strictly better; for active editing sessions, WAV's simplicity still has fans.

Does converting MP3 to WAV improve the sound?

No — the WAV preserves exactly what the MP3 decoded to, artifacts included. The benefit is workflow: universal editing support and no additional loss when you re-export your edits.

How do I get the audio out of a video file?

Use an MP4 to MP3 converter: the video stream is discarded and the audio track is extracted and encoded to MP3, typically shrinking the file by 90% or more while keeping speech and music perfectly listenable.