Recording guides
MP3, M4A, FLAC or WAV: choose your recording format
Save as widely compatible MP3, efficient M4A/AAC, lossless FLAC, or uncompressed WAV, with mono, stereo, and quality controls.
Compare recording formats
| Format | Encoding | Best for | Availability |
|---|---|---|---|
| MP3 | Lossy | Widely compatible sharing | Free ≤ 128 kbps · Pro > 128 kbps |
| M4A / AAC | Lossy | Efficient everyday recordings | Free ≤ 128 kbps · Pro > 128 kbps |
| FLAC | Lossless compression | Lossless archiving | Pro |
| WAV | Uncompressed PCM | Editing and PCM workflows | Pro |
Smaller files for sharing
MP3 offers broad playback compatibility. M4A/AAC is an efficient choice for everyday recordings. Both use lossy compression to keep files smaller. The free version supports bit rates up to 128 kbps.
At 128 kbps, 30 seconds of encoded audio is roughly 480 KB, before container overhead. This is an estimate, not a measured file size; duration and encoding settings affect the final size.
Lossless audio for editing and archiving
FLAC compresses captured audio without lossy encoding. WAV stores uncompressed PCM and works well with audio editors. Both require Pro. Neither can restore detail already missing from the source.
Channels and sample rate
Choose mono or stereo to suit the source and the app that will play or edit your recording. Match the sample rate to your needs; a higher setting cannot add detail that the source never contained.
Make a short test recording
Record about 30 seconds, stop, and open the file in the app you will use to play, share or edit it. Check the opening words, level and playback compatibility before a longer recording.
Related guides
Frequently asked questions
Which format should I choose?
MP3 offers broad playback compatibility. M4A/AAC is an efficient choice for everyday recordings. Both use lossy compression to keep files smaller. The free version supports bit rates up to 128 kbps. FLAC compresses captured audio without lossy encoding. WAV stores uncompressed PCM and works well with audio editors. Both require Pro. Neither can restore detail already missing from the source.
What should I check before a long recording?
Record about 30 seconds, stop, and open the file in the app you will use to play, share or edit it. Check the opening words, level and playback compatibility before a longer recording.
Multi-source recording
Record a microphone, Windows system sound or compatible apps together. Save a mix or keep separate tracks with Audio Recorder+ Pro.