Drop WAV files here
or click to choose files
(multiple files supported)
How to use
- Drag and drop the WAV files you want to convert onto the box above, or click it to choose files.
- Pick an output bit depth if you need to. “Same as source” is right for most cases.
- When conversion finishes, download the WAV, named after the original with
_44100appended. Multiple files can be saved together as a ZIP.
Specifications
| Input | WAV (linear PCM 8/16/24/32-bit, 32/64-bit float). Compressed WAV such as ADPCM is not supported |
|---|---|
| Input sample rates | 48 / 88.2 / 96 / 176.4 / 192 kHz and others (files already at 44.1 kHz are skipped) |
| Output | Uncompressed 44.1 kHz WAV (16-bit, 24-bit or 32-bit float) |
| Method | Polyphase Kaiser-windowed sinc interpolation. The ratio is computed exactly as a rational number (48 kHz → 44.1 kHz is 147/160) |
| Filter response | Passband 0–20 kHz; about 110 dB rejection from 22.05 kHz upward |
| Dither | TPDF dither on 16-bit output (can be turned off) |
| Channels | Same as the source (mono, stereo, multichannel) |
| Metadata kept | Loop points (smpl) and cue markers (cue) are rescaled to 44.1 kHz positions. Tags (LIST/INFO, ID3), BWF (bext), inst and acid chunks |
| Metadata not kept | iXML and other chunks not listed above (reported in the log when present) |
| Where it runs | Only in your browser on your device (nothing is sent to a server) |
| Price | Free, no sign-up |
| Browsers | Current versions of Chrome, Edge, Firefox and Safari |
Frequently asked questions
Are my WAV files uploaded to a server?
No. Conversion happens entirely inside your browser and your audio is never sent to any server. Once the page has loaded, it also works with the internet connection turned off.
Which sample rates can it convert?
It converts WAV files at 48, 88.2, 96, 176.4 and 192 kHz, among others, to 44.1 kHz. Files below 44.1 kHz, such as 22.05 or 32 kHz, are converted up to 44.1 kHz. Files that are already 44.1 kHz are skipped.
Does conversion affect audio quality?
The tool uses its own high-accuracy resampler (Kaiser-windowed sinc interpolation with about 110 dB of stopband rejection). Content up to 20 kHz is preserved, and content above 22.05 kHz, which 44.1 kHz cannot represent, is removed so it does not fold back as aliasing. Because it does not rely on the browser's built-in resampler, results are equivalent in every browser and the output has the same duration as the source.
Can I choose the output bit depth?
Yes: 16-bit, 24-bit or 32-bit float. With the default “Same as source”, 16-bit files stay 16-bit, 24-bit stay 24-bit, and 32-bit files are written as 32-bit float. When writing 16-bit, TPDF dither is added to avoid quantization distortion; you can switch it off with the checkbox.
Are loop points and tags preserved?
Yes. Loop points (the smpl chunk) and cue markers are rescaled to their 44.1 kHz sample positions and written to the output. Rescaled positions are rounded to the nearest sample. Tags (LIST/INFO, ID3) and BWF (bext) data are kept as well. A few chunks such as iXML are not carried over, and the log tells you when that happens.
Why would I need 44.1 kHz?
44.1 kHz is the sample rate of the audio CD and is widely used in music production and distribution. You need to convert when material recorded at 48 kHz has to match a 44.1 kHz project, or when a delivery spec, playback device or game engine requires 44.1 kHz.
Can I link to the tool with settings preselected?
Yes. Add parameters to the URL: depth sets the output bit depth (auto, 16, 24 or 32) and dither turns dither off or on (0 or 1). Example: ?depth=16&dither=0
Is it free? Do I need an account?
It is free, with no account and nothing to install. Running costs are covered by ads. There is no limit on the number of files, but processing happens in your device's memory, so files up to a few hundred megabytes each are a sensible limit.
Privacy and disclaimer
This tool does not collect, store or transmit your audio files or their contents. All conversion happens inside your browser.
This site uses Google AdSense to show ads, which involves cookies and similar technologies. See the Privacy Policy for details.
No guarantee is given for the accuracy or quality of the converted files. Always keep your original files.