WAV to MP3 — Convert Online for Free
Convert WAV to MP3 right in your browser: pick the bitrate, mono or stereo. Your file is never uploaded — everything runs on your own device.
Drag and drop your file here or click to select
About the conversion
WAV stores audio uncompressed: one minute of 44.1 kHz stereo takes about 10 MB. The same minute as an MP3 at 192 kbps is roughly 1.4 MB — almost seven times smaller. That size gap is the whole reason people convert WAV to MP3: to send a recording, upload it somewhere, or simply stop storing gigabytes of it.
At 192 kbps and above most listeners cannot tell the difference on ordinary equipment, and for speech, voice memos and podcasts even 128 kbps is plenty. You set the bitrate before converting: higher means a bigger file and a result closer to the original. Switching stereo to mono halves the size again and usually makes sense for voice.
Keep in mind that MP3 is lossy compression — some audio data is discarded for good. Converting the MP3 back to WAV will restore the format but not the quality, so hold on to the original if you might still need it. The whole conversion happens in your browser and the file is never sent anywhere.
Frequently asked questions
How do I convert WAV to MP3?
Drop your WAV file into the tool or pick it from your device, choose a bitrate and optionally switch between mono and stereo, then start the conversion. The finished MP3 downloads straight away, and you can queue several files at once.
Which bitrate should I choose?
Use 192 or 256 kbps for music — that is practically indistinguishable from the original by ear. For speech, lectures and voice memos 128 kbps is enough, and if only intelligibility matters you can go down to 96. Higher bitrate means a larger file.
How much smaller will the file be?
Usually six to ten times. A minute of uncompressed WAV is about 10 MB, while the same minute as MP3 at 192 kbps is around 1.4 MB. The exact figure depends on the bitrate you pick and whether you keep stereo or switch to mono.
Will the quality drop?
Yes — MP3 uses lossy compression, so some data is thrown away. At 192 kbps and above the difference is barely audible on normal equipment, but it is worth keeping the original WAV: converting back restores the format, not the lost detail.
Is my file uploaded to a server?
No. The conversion runs inside your browser using your own device, so the audio never leaves it. That makes it safe for personal recordings and work material.