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Free online video converter

Convert videos to MP4, MOV, MKV, WebM and more. Trim clips or resize several videos together. Free, with no sign-up or watermark.

Add files to get started

How to convert video files online

  1. 1. Add your videosUpload one video or a batch from your device, Google Drive, or Dropbox.
  2. 2. Choose an outputSelect a format and quality preset. Trim the clip or change its dimensions if needed.
  3. 3. Convert and downloadClick Convert, then download the finished videos.

Trim, resize and compress before downloading

Set up your changes once, then convert. There is no need to upload the same video to a separate tool for each edit.

Trim the clip
Set start and end times to remove a long intro or keep just the part you need.
Resize for your screen or platform
Set dimensions or choose a 16:9, 9:16, 1:1 or 4:5 frame. Crop to fill it, or add black bars to keep the full picture.
Reduce file size
Start with the Smaller file preset. For more control, choose Custom and adjust quality, resolution or frame rate.

Popular video conversions and audio extraction

Choose a conversion to start with the output format already selected.

  • MOV to MP4

    Make QuickTime videos easier to play and share.

  • MKV to MP4

    Convert a video for a player or upload form that needs MP4.

  • WebM to MP4

    Use a WebM recording in an app that requires MP4.

  • AVI to MP4

    Make older AVI recordings easier to play.

  • MP4 to 3GP

    Prepare a video for an older phone that needs 3GP.

  • MP4 to QuickTime

    Create a .qt file for software that requires QuickTime output.

  • MP4 to MP3

    Save a video's sound as an MP3 for listening or sharing.

  • MP4 to WAV

    Save a video's sound as WAV for editing.

Choose the right video format

MP4 for broad playback and publishing
Choose MP4 with H.264 video and AAC audio for websites, presentations and sharing with clients.
WebM for websites
WebM is useful for video embedded on a web page. Check that your website platform accepts it before converting a batch.
MOV for editing
Choose MOV when your editor or client asks for it. Check which video codec they need, such as H.264 or ProRes.
MKV or AVI for a particular player
Use these formats when your player or software requires them. MP4 is usually easier to share.

Reuse your settings for the next set of clips

For weekly social clips, choose MP4 and a 9:16 frame. Crop to fill the frame or add black bars to keep the whole picture. Save those settings as a recipe for the next batch.

A free account includes one saved recipe. Paid plans add larger batches, more recipes and delivery to a Google Drive or Dropbox folder after conversion. Compare the plans and conversion limits.

Video Converter FAQ

Is the FastConvert video converter free and watermark-free?

Yes. You can convert video without an account or watermark within the Free plan limits: up to 2 files per batch, 100 MB per file, and 20 conversions per 24 hours.

Which video formats can I convert?

FastConvert supports MP4, MOV, MKV, WebM, AVI and older formats such as 3GP, WMV and MPEG. Browse the format list on this page for the output you need.

Can I batch convert multiple videos?

Yes. Upload several videos and convert them together. Each file can have its own settings. Sign in to apply shared settings with a recipe.

Can I trim, crop, resize, and convert videos together?

Yes. Choose an output format, set start and end times, and adjust the dimensions before converting. You can also crop, rotate or mirror the video.

What is the best video format for compatibility?

MP4 with H.264 video and AAC audio works with most players and platforms. The codec matters as well as the file extension, so check both when a client gives you specific requirements.

Will converting a video make it smaller without losing quality?

Not necessarily. A different format can produce a larger file. Lowering quality or resolution can reduce the size, but may make the picture less sharp. Keep the original if you need it for editing.

Can I extract audio from a video?

Yes. Choose an audio format such as MP3 or WAV, then convert. You will get an audio file containing the video's sound.

What if my video has no audio track?

You can still convert it to another video format. Audio extraction reports an error because there is no sound to extract.

Does the video converter work on phones, tablets, Mac, Windows, and Linux?

Yes. Use a modern browser on your phone, tablet or computer. There is no app to install.

Are my uploaded videos private, and when are they deleted?

Yes. FastConvert stores files temporarily only for processing and download. Files are kept for 24 hours on Free, 1 week on Basic, or 1 week on Pro, then scheduled for automatic deletion. Uploaded files are not used to train AI models. A connected cloud provider only receives or supplies a file when you choose that import or delivery action.

Browse video converters by output format

Choose the format you want, then upload your videos.

MP4

Convert videos to MP4 in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MP4 Converter
AVI

Convert videos to AVI in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

AVI Converter
WEBM

Convert videos to WEBM in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

WEBM Converter
MKV

Convert videos to MKV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MKV Converter
MOV

Convert videos to MOV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MOV Converter
3G2

Convert videos to 3G2 in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

3G2 Converter
3GP

Convert videos to 3GP in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

3GP Converter
ASF

Convert videos to ASF in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

ASF Converter
WMV

Convert videos to WMV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

WMV Converter
MOVIE

Convert videos to MOVIE in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MOVIE Converter
QT

Convert videos to QT in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

QT Converter
FLV

Convert videos to FLV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

FLV Converter
F4V

Convert videos to F4V in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

F4V Converter
OGV

Convert videos to OGV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

OGV Converter
M4V

Convert videos to M4V in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

M4V Converter
MP4V

Convert videos to MP4V in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MP4V Converter
MPG4

Convert videos to MPG4 in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MPG4 Converter
TS

Convert videos to TS in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

TS Converter
M2TS

Convert videos to M2TS in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

M2TS Converter
MPG

Convert videos to MPG in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MPG Converter
MPEG

Convert videos to MPEG in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.

MPEG Converter