MP3, WAV or M4A: which audio format should you choose?
Compare MP3, WAV and M4A for sharing, editing and listening. Learn how compression, file size and source quality affect your audio format choice.
Start with the job
Use MP3 when broad playback compatibility and a smaller file matter. Use WAV when an editor or production workflow expects uncompressed audio. M4A is a useful option for AAC audio in a compact container.
Export quality starts with the source
A higher output bitrate does not recreate information already removed from a compressed source. Turning an MP3 into WAV makes a larger uncompressed file, but does not recover the original recording. Keep the original if you plan to edit repeatedly.
Convert a short sample first
Choose a file, keep a short time range, and compare the output on the device where you will listen. Check speech clarity, background sounds and file size. Once satisfied, export the full recording. ToAudio's browser converter supports MP3, WAV, OGG and M4A output; codec availability still depends on whether the bundled engine can read your input.