Audio Converters
Convert audio between MP3, WAV, FLAC, M4A, AAC, OGG and OPUS. Each converter handles one format pair, so choose the file type you have and the one you need. Not sure which format is right? The guide below covers voice notes, editing, small files and lossless libraries.
MP3 and WAV
The most common pair. WAV for editing, MP3 for sharing.
FLAC and lossless
Archive music without losing quality, then make smaller copies when you need them.
FLAC to MP3
Make a small copy of a lossless track for phones, cars and sharing.
Open converterMP3 to FLAC
Lossless packaging for an MP3. It cannot bring back lost detail.
Open converterWAV to FLAC
Save about half the space with no change to the sound.
Open converterFLAC to WAV
Unpack FLAC for editors and players that only read WAV.
Open converterM4A and AAC
Formats behind iTunes, iPhone recordings and most video soundtracks.
MP3 to M4A
AAC in an M4A file, suited to Apple devices and iTunes-style libraries.
Open converterM4A to MP3
Open iPhone voice memos and M4A tracks anywhere.
Open converterMP3 to AAC
Re-encode as AAC for video projects and Apple-friendly audio.
Open converterAAC to MP3
A plain MP3 for devices and apps that will not play .aac.
Open converterWAV to AAC
Compress a recording for video and streaming-style delivery.
Open converterAAC to WAV
Decode AAC so editors and video tools can open it.
Open converterOGG Vorbis
An open format that is popular in games, Android and open-source software.
MP3 to OGG
Open-format Ogg Vorbis for games, Android and open-source players.
Open converterOGG to MP3
Play .ogg and .ogx files on phones, cars and older players.
Open converterWAV to OGG
Compact game and app audio from an uncompressed master.
Open converterOGG to WAV
Decode Ogg Vorbis into a WAV for editing.
Open converterOGG to FLAC
For libraries that need FLAC. The sound stays the same as the OGG.
Open converterFLAC to OGG
Roughly a quarter of the size, in an open, royalty-free format.
Open converterOPUS and voice notes
The codec behind WhatsApp and Telegram voice messages.
Which audio converter do I need?
A WhatsApp or Telegram voice note will not play on my computer
Save the voice note and convert the .opus file to MP3. It will then open almost anywhere. Open it.
I need to edit audio and my editor rejects the file
Convert it to WAV. Almost every editor and DAW opens WAV. Open it.
My recording is too big to email
Convert the WAV to MP3. A 3-minute song falls from about 32 MB to under 3 MB. Open it.
I have an iPhone voice memo or an .m4a file
Convert it to MP3 so Windows, Android and older players can play it. Open it.
I want a lossless library that does not take huge space
Convert WAV to FLAC. It is usually about half the size and sounds identical. Open it.
Keep your original recording. Converting from one lossy format to another compresses the audio again, so make each new copy from the original file.
Audio format questions
Which audio format should I use?+
Use MP3 when you want a file that plays everywhere. Use WAV or FLAC when you want to keep full quality for editing or archiving, and FLAC takes about half the space of WAV. Use AAC or M4A for Apple devices and video, and OGG or OPUS for games, apps and voice.
Does converting MP3 to WAV or FLAC improve the sound?+
No. MP3 is lossy, so the detail it discarded cannot return. A WAV or FLAC made from an MP3 holds the same sound in a bigger file. The benefit is compatibility, or avoiding a second lossy encode when you edit.
Why are WAV files so large?+
WAV stores CD-quality audio without compression, at 1,411 kbps, or about 10 MB per minute. A 3-minute song is around 32 MB as WAV and about 2.9 MB as a 128 kbps MP3.
What is the difference between lossy and lossless formats?+
Lossy formats such as MP3, AAC, OGG and OPUS remove detail you are unlikely to notice, which makes small files. Lossless formats such as FLAC and WAV keep everything, so the files are larger.
Will converting between two lossy formats reduce quality?+
Slightly. Each lossy conversion compresses the audio again. Convert from the original recording when you can, and keep your original files.
Is there a size limit?+
Yes. Audio files larger than 50 MB are not accepted. That is roughly five minutes of WAV, but many hours of MP3 or speech.
What happens to the audio I upload?+
Files are uploaded to our server only to run the conversion and are not kept for any other use. Convert only audio you own or have permission to use, and read the privacy policy for details.
Audio is uploaded to our server only to run the conversion and is not kept for any other use. Convert only recordings you own or have permission to use. Read the privacy policy.