Audio Converter
Converts audio files into a different format. Supports MP3, WAV, FLAC, AAC, OGG, OPUS, M4A and more.
What it does
Use this to turn an iPhone voice memo (M4A) into MP3, convert a FLAC archive into MP3 for portable players, shrink WAV studio recordings as OPUS, or migrate old WMA files to modern formats.
How to use
- Drag audio files into the list.
- Pick a Target Format.
- Set Audio Quality, Sample Rate and Channels.
- Click Run.
You get one converted copy per file.
Format options
| Format | What for |
|---|---|
| MP3 | Most universal, every device plays it. General use. |
| WAV | Uncompressed, studio. Big files. |
| FLAC | Lossless compression. For a music archive. |
| AAC | iTunes/Apple standard, better than MP3 at the same bitrate. |
| OGG | Open-source alternative. |
| OPUS | Modern, high quality at low bitrate. Great for podcasts/speech. |
| WMA | Older Windows Media Player. |
| M4A | For Apple devices. |
| AC3 / AIFF | Professional audio production formats. |
| AMR | Phone-recording compression format. |
Settings
- Audio Quality (Bitrate): 320k studio, 192k high, 128k standard, 64k speech.
- Sample Rate: Auto (keep original), 44100 Hz CD quality, 48000 Hz professional.
- Channels: Auto (keep original), Mono, Stereo, Surround 5.1.
Examples
iPhone voice memos into MP3: Add the M4A files, Target MP3, 192k, Auto sample, Auto channels, run.
FLAC archive into phone-friendly MP3: Add the FLACs, Target MP3, 320k, run. High quality on the go.
Compress podcasts as OPUS: Add the podcasts, Target OPUS, 64k, Mono, run. Tiny files.
Old WMA music into FLAC: Add the WMAs, Target FLAC, Auto, run.
Watch out
- Picking a bitrate higher than the original does not improve quality.
- Going lossless to lossy (FLAC to MP3) loses quality, that is expected.
- Going lossy to lossless (MP3 to FLAC) does not restore what was lost, just changes the container.
- Some players cannot open professional formats like AC3 or AIFF.
- AMR is very low-quality, useful only for archiving phone recordings.
License
Free tier has a monthly conversion cap. Office plan removes it.