About this tool
FLAC is WAV without the waste: the same bit-perfect audio at roughly half the size, with proper support for tags and cover art. It is the format for archiving masters, CD rips, and field recordings that you want to keep forever without losing a single sample.
About the formats: WAV stores uncompressed PCM audio: perfect quality, but around 10 MB per minute. It is the format audio editors, samplers, and studios expect. FLAC is lossless compressed audio: identical to the CD or master, at roughly half the size of WAV. Great for archiving, awkward for phones, car stereos, and streaming uploads.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your WAV files into the box above, or click to browse. Nothing is uploaded.
- Click Convert to FLAC and wait a moment.
- Download the results individually or all at once as a ZIP.
Frequently asked questions
Is WAV to FLAC really lossless?
Yes. FLAC compresses like a ZIP file: decoding it gives back exactly the original samples.
How much smaller will the FLAC be?
Typically 40-60% smaller than the WAV, depending on how complex the audio is. Silence and simple tones compress far more.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.