๐ŸŽฌ Video & Audio Converter

Convert MP4, MP3, MOV, WAV, MKV, WebM and more. Free, and your file stays on your device.

๐ŸŽฌ Video & Audio Converter

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Drop a video or audio file here

MP4, MOV, MKV, AVI, WebM, FLV, WMV, 3GP, MP3, WAV, M4A, AAC, OGG, FLAC, WMA and more

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Preparingโ€ฆ

โœ… Conversion complete!

๐Ÿ”’ The conversion runs inside your browser. Your video or audio file is not uploaded to EasyToolbox or to any other server.
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Related Guide
The Complete Guide to File Conversion
Common formats, quality preservation, and converting safely.
Read Article โ†’

A media converter that works on your own device

Most online video converters upload your file to a server, convert it there, and send it back. This one does the work inside your browser instead, using a build of FFmpeg, the open-source engine behind many desktop video apps, compiled to WebAssembly. Nothing is uploaded, so there is no queue, no account, no watermark and no daily file count. The trade-off is that speed and maximum file size depend on your own computer or phone.

The first time you press Convert, the page downloads the converter engine (about 32 MB) from a public code CDN. Your browser keeps a copy, so later conversions start much faster.

Which format should you choose?

FormatTypeGood for
MP3Audio, lossyPlays on almost everything. The usual choice for pulling the sound out of a video.
M4A / AACAudio, lossySlightly better sound than MP3 at the same bitrate. Native on Apple devices.
WAVAudio, uncompressedEditing and audio software. Large files: about 10 MB per minute of stereo sound.
FLACAudio, losslessArchiving music with no quality loss, at roughly half the size of WAV.
OGG / OPUSAudio, lossyOpen formats. Opus is very efficient for speech and voice notes.
MP4Video (H.264 + AAC)The safest video format for phones, social media, messaging apps and TVs.
MOVVideo (H.264 + AAC)Apple's container. Useful for iMovie, Final Cut and older Mac software.
MKVVideo (H.264 + AAC)Flexible container, popular with desktop players such as VLC.
WebMVideo (VP8 + Vorbis)Open format for web pages. Slower to create than MP4.
AVIVideo (MPEG-4 + MP3)Old players, car stereos and legacy Windows software.
GIFAnimation, no soundShort clips of a few seconds. Long videos make very large GIFs.

What the quality settings do

For MP3, M4A, OGG, OPUS and AAC you choose a bitrate. 192 kbps is a sensible default for music; 128 kbps is fine for speech and podcasts; 320 kbps is the highest MP3 allows. Choosing a higher bitrate than the original file had does not bring back detail that was already removed. It only makes the file bigger.

For video, "High quality", "Balanced" and "Smaller file" change how strongly the picture is compressed. You can also reduce the resolution, for example 1080p down to 720p, which is the most effective way to shrink a video for email or messaging. Resolution is never increased: a 480p clip set to 1080p stays at 480p.

For MP4, MOV and MKV there is also "Keep original quality (fast copy)". This moves the existing video and audio streams into the new container without re-compressing them, so it finishes in seconds and loses no quality. It only works when the original streams are allowed in the new container; if they are not, the tool re-encodes the file automatically.

Speed and file size limits

Extracting audio is quick: the sound from a ten-minute video usually converts in well under a minute. Re-encoding video is much heavier work, and a browser cannot use your graphics card for it the way desktop software can. Expect a 1080p video to take longer than its own running time on an average laptop, and longer again on a phone.

Because the result is built in your device's memory, very large files can fail. Files up to a few hundred megabytes are normally fine on a computer. Phones have less memory, so keep to shorter clips there. Keep the tab open and in front while a conversion runs, since browsers slow down background tabs.

What it cannot convert

Copy-protected files, such as downloads saved inside streaming apps or DRM-protected purchases, cannot be read by this or any other standard converter. The tool also works on files you already have: it does not download videos from websites.

Frequently Asked Questions

Choose your MP4 file, leave "Convert to" on MP3, pick a bitrate (192 kbps suits most music) and press Convert. The tool removes the picture and saves only the sound track as an MP3 file you can download.
No. The conversion happens in your browser on your own device. The only thing downloaded is the converter engine itself, which comes from a public code CDN the first time you use the tool.
There is no watermark and no limit on how many files you convert. The practical size limit is your device's memory: a few hundred megabytes usually works on a computer, less on a phone. Files of 2 GB or more are not accepted.
Audio is a small amount of data. Video has to be decoded and re-compressed frame by frame, and a browser does this on the processor only. If you only need a different container (for example MOV to MP4), choose "Keep original quality (fast copy)", which skips the re-compression.
No. MP3 has already discarded some audio detail, and converting to a lossless format cannot restore it. The WAV or FLAC file will sound the same as the MP3, only larger. Convert to WAV when a program requires that format, not to gain quality.
Current versions of Chrome, Edge, Firefox and Safari on computers and phones. Very old browsers without WebAssembly support cannot run it.