How to Convert Video to MP3 on Windows & Mac

1. 1

   Drag your files into ConvertSave

   Open ConvertSave and drag your video files into the window. You can drop one file or a whole selection at once. There is no upload step, because the files never leave your computer.

2. 2

   Choose MP3 as the output format

   Pick MP3 from the format list. ConvertSave shows the formats that make sense for the files you dropped, so MP3 is right there.

   

3. 3

   Click Convert

   Hit the Convert button. Each MP3 file is saved next to the original, so you don't have to hunt through folders to find your converted files. The originals are left untouched.

   

Windows has no built-in way to save a video's audio as MP3. ConvertSave runs locally on Windows 10 and 11: drag the video in, pick MP3, convert. The MP3 is saved next to the video file.

QuickTime's audio export gives you M4A, not MP3, and it only handles formats QuickTime can play in the first place, which rules out most MKV and WEBM files. ConvertSave on macOS takes all of them and outputs a real MP3, same three steps as everywhere else.

ConvertSave's 7-day free trial is fully unlocked, so converting a batch of videos costs nothing. If your videos are personal recordings, skip the upload-based converter sites; the safety section below explains why.

ConvertSave reads the common video containers: MP4, MOV from iPhones and cameras, MKV, WEBM from screen recorders and the web, and AVI. On the output side you're not limited to MP3 either. WAV gets you uncompressed audio for editing, M4A and AAC suit Apple devices, FLAC is lossless, and OGG is there for open tooling.

Drag all the videos in at once, even a mix of formats, pick MP3 once, and convert. Every file is processed and each MP3 lands next to its source video. We've tested batches of up to a thousand files, so a semester of recorded lectures converts in one sitting.

The risk with converting video to MP3 isn't the conversion itself, it's where the conversion happens. Free converter websites work by uploading your file to someone else's server. You usually can't tell who runs the server, where it is, or how long your file sticks around after the conversion finishes. For personal videos and photos that's a real privacy trade, and it's the reason so many of those sites are covered in aggressive ads.

ConvertSave does the conversion on your own computer. Nothing is uploaded anywhere. You can turn off Wi-Fi entirely and it still works, which is also the easy way to verify the claim. Your original file is never modified, and the converted copy is written right next to it.