Audio Converter (MP3, WAV, OGG)
Add your audio or video file, pick the target format, download the result. The conversion runs in your browser, so the file stays on your computer.
Drop files here
or choose from your computer
MP3, WAV, M4A, AAC, OGG, OGA, OPUS, FLAC, WMA, AIFF, MP4, MOV, WEBM
Your files never leave your computerHow it works
- Choose your audio or video files or drag them into the drop area.
- Pick the target format. For a lossy format, set the bit rate and the sample rate.
- Press Convert and download the files.
Why this tool
- Your file stays on your computer. There is no upload.
- Five target formats: MP3, WAV, OGG Vorbis, M4A and FLAC.
- Bit rates from 96 to 320 kbps. WAV and FLAC are written without loss.
- You can set the sample rate to 44.1 kHz or 48 kHz.
- Give it a video and it takes the audio only. Several files at the same time.
The format of an audio file is usually the choice of the device, not yours. An iPhone voice memo gives M4A. The Windows recorder gives WMA. Phone apps give OPUS. A studio session gives WAV. When the program at the other end does not open one of these, you need to convert.
Formats fall into two groups. WAV and FLAC are lossless: every sample is kept. WAV does no compression and is large. FLAC holds the same data at about half the size. MP3, OGG Vorbis and M4A are lossy: they drop information that the ear does not notice, and the file gets small.
In a lossy format the bit rate sets the quality. For speech, 96 or 128 kbps is enough. For music, 192 kbps sounds like the source to most ears, and 320 kbps is the top step. Keep one point in mind: a lossy file converted again to a lossy format adds a second loss. If you have the WAV, convert it straight to the target and do not pass through MP3.
The sample rate is a separate choice. 44.1 kHz is the music standard and 48 kHz is the video standard. When the audio goes into a video project, pick 48 kHz. The editor then does no resampling.
The work runs in your browser. The audio engine downloads once, about 30 MB, and stays in the cache. Your file stays on your computer.
Frequently asked questions
Does my file go to a server?
No. The conversion runs in your browser. Your file never leaves your computer. Open the network tab and check it yourself.
Which formats does it open?
MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WMA and AIFF. You can also give it a video file, and it takes the audio only.
Why do I wait on the first run?
The audio engine downloads once, about 30 MB. After that it comes from the browser cache.
Why is it slow for some files?
The engine runs on one core in the browser. Short recordings take seconds, and a one-hour recording can take minutes.
Does the quality drop?
WAV and FLAC are lossless, so the quality holds. MP3, OGG and M4A are lossy. A lossy file converted again to a lossy format gets a second small loss.
Which format should I pick?
Pick MP3 to play everywhere. Pick WAV for an editor. Pick FLAC for an archive, because it is lossless and smaller than WAV.