Convert audio to WAV
Turn MP3, OGG, FLAC, M4A and other audio files into uncompressed WAV files for editing software, hardware and projects that need WAV. Your browser decodes the sound, so the file is not uploaded.
Features
Many formats in
Reads MP3, WAV, OGG (including Opus), FLAC, M4A/MP4 audio and WebM audio, as far as your browser can decode them.
Three quality levels
Write 16-bit CD-quality WAV, 24-bit for studio work, or 32-bit floating point for editing without clipping.
Sample rate choice
Pick 44.1 kHz for music, 48 kHz for video projects or 22.05 kHz for smaller speech files. The audio is resampled for you.
Mix to mono
Combine all channels into one, which halves the file size of stereo recordings and suits speech.
Batch conversion
Convert up to 10 files in one run and download them separately or as a ZIP.
How to use Audio to WAV
- Choose audio files, or drop them onto the page.
- Select the WAV quality, the sample rate and whether to mix to mono.
- Select Convert.
- Download the WAV files, or all of them as a ZIP.
Supported formats
| Accepts | MP3, WAV, OGG, FLAC, M4A / MP4, WebM |
|---|---|
| Produces | WAV |
Which formats can be read depends on your browser. This tool does not write MP3 or other compressed formats.
Limits and things to know
- Up to 10 files, 100 MB each and 300 MB in total. Each recording can be up to 20 minutes long, because the decoded sound is kept in memory.
- WAV is uncompressed, so files are much larger than the original MP3: about 10 MB per minute for 16-bit stereo at 44.1 kHz.
- Converting from a compressed format such as MP3 does not restore quality that was already lost. The WAV sounds the same as the source.
- Metadata such as artist, title and cover art is not carried over to the WAV file.
- The browser does the decoding. A format or codec it cannot play, for example some M4A files in Firefox, gives an error for that file. Writing MP3, OGG or FLAC is not supported.
Privacy and processing
Your browser decodes the audio with its own Web Audio engine and the WAV file is written on your device. Nothing is sent to FilesKit, which has no server that receives audio.
Common uses
Editing and production
Open audio in editors, samplers and DAWs that prefer or require WAV files.
Hardware and games
Prepare sound for devices, game engines, phone systems and kiosks that only play WAV.
Speech and transcription
Create a mono 22.05 or 44.1 kHz WAV from a recording for speech tools and transcription software.
Archiving a copy
Keep an uncompressed copy of a recording that does not depend on any codec.
How this differs from other approaches
Online audio converters upload your recordings, which are often personal, and many limit file size or add waiting time. FilesKit decodes on your device. Desktop tools such as Audacity and ffmpeg support many more formats, including writing MP3 and FLAC.
Frequently asked questions
Is my audio uploaded?
No. The audio is decoded and converted in your browser and FilesKit has no server that receives your files.
Will the WAV sound better than my MP3?
No. WAV does not improve quality that the MP3 already lost. It stores the sound without further compression, which many editors and devices prefer.
Which bit depth should I pick?
16-bit is right for most uses and has the smallest files. Choose 24-bit for studio work and 32-bit float if you will edit the sound a lot and want no clipping.
Why can’t it convert my file?
The browser must be able to play the format. Check that the file opens in your browser, try Chrome or Edge for M4A and AAC, and remember that recordings over 20 minutes are not accepted.
Can I convert WAV to MP3 here?
No. This tool only writes WAV, because browsers cannot encode MP3 without an extra library.