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How to Convert a Video File to MP4, WebM, MOV, or MP3 Online

May 20, 2026 · 4 min read

If you have a video file in the wrong format — a MOV that needs to be MP4, an MP4 you want as a WebM, or a video you want as an MP3 audio file — upload it to Convert Format and pick the formats you want out. It handles multiple outputs at once, so you do not have to run the same file through the tool more than once.

Convert to multiple formats in one go

Upload one video or audio file and download it as MP4, MOV, WebM, MKV, MP3, AAC, WAV, and more.

Open Convert Format

Works in browserMultiple outputs at onceVideo and audio

Best Tools For This

Start here

Use Convert Format

Best when you need the same file in a different container — MP4, MOV, WebM, MKV, MP3, and more.

Open Convert Format

Use Compress

Use this instead if the format is fine but the file is just too large.

Open Compress

Use Social Export

Use this instead if you need platform-ready versions for YouTube, TikTok, and Instagram from the same project.

Open Social Export

Quick steps

How To Convert a Video Format

Upload the file

Drop your video or audio file into Convert Format. MP4, MOV, WebM, AVI, MKV, MP3, and WAV files are all supported.

Pick the output formats

Select one or more formats you want. The tool shows which format your file is already in and greys it out so you do not accidentally convert to the same format.

Convert

Hit Convert. The tool runs all selected formats at the same time so you do not have to wait for one before starting the next.

Download each file

When the conversion finishes, download each format separately.

Supported output formats

Video

MP4 — most compatible, works everywhere
WebM — open web format, good for browsers
MOV — Apple QuickTime container
MKV — Matroska, flexible and high quality
AVI — legacy Windows format
GIF — animated image, no audio

Audio only

MP3 — universal audio
AAC — Apple and streaming audio
WAV — uncompressed lossless audio

Why convert to multiple formats at once

Running the same file through a converter once per format is slow when you need three or four outputs. Convert Format runs all selected jobs at the same time, so you wait roughly the same amount of time whether you pick one format or five.

Common reasons to convert

MOV to MP4: MOV files from iPhones and cameras often need to be MP4 for uploading to most platforms.
Video to MP3: strip the audio track from a video recording for podcast editing, background music, or sharing audio only.
MP4 to WebM: some web projects or video players require WebM instead of MP4.
MP4 to GIF: turn a short video clip into an animated GIF for messages or social posts.

Good to know

The tool detects your input format automatically and shows it as the source. You cannot accidentally select your source format as an output. Each conversion runs as a separate render job, so if one format fails the others are not affected.

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