AVI to WMV Converter

Convert an AVI into a smaller, Windows-friendly WMV, free and right in your browser, with no signup and no watermark.

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We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated July 2026

AVI and WMV both come from Microsoft, but WMV is the more compact Windows Media format, carrying Windows Media video with WMA audio. Converting AVI to WMV gives you a smaller file that drops straight into Windows Media Player or an older PowerPoint deck. EchoWave does it in your browser, free and with no signup. If you want a clip that plays beyond Windows, AVI to MP4 is the more universal option.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert AVI to WMV

1
Upload your AVI
Drag your AVI onto the converter or pick it from your device. Nothing to install.
2
Choose WMV and convert
Select WMV as the output and start. Free, with no sign-up and no watermark.
3
Download your WMV
Save the finished WMV, or open it in the editor to trim, crop, or resize it first.

Try it

Estimate your WMV

Pick a video bitrate and a length to see the WMV file size before you convert.

Video bitrate

Length5 min

1 min30 min

Estimated WMV size183MBSharp 1080p

An estimate. Real size varies with resolution, frame rate, and how much the picture moves.

The formats

AVI vs WMV

AVI

Audio Video Interleave

A legacy Microsoft video container

Type: Legacy video container
Holds: Older codecs like DivX or Xvid with MP3 or PCM audio
Typical size: Large for the quality it gives
Plays on: Windows and VLC, patchy on phones

Best for:Playing older Windows video files

WMV

Windows Media Video

Windows Media video, small and Windows-first

Type: Windows Media video
Holds: Windows Media video with WMA audio
Typical size: Small, built for Windows
Plays on: Windows Media Player and VLC

Best for:Older Windows video and slideshows

Will it lose quality?

When the codecs already match WMV, the converter can change the container without re-encoding, so the picture stays identical.
When the video has to be re-encoded for WMV, a high bitrate keeps it visually close to the AVI.
Converting cannot add detail the AVI never had. The output is at best as good as the source.

Use cases

What people use it for

Play anywhereMake a clip your device supports

Video editorsGet footage your software accepts

Web videoUse a format browsers play

CourseworkHand in a standard video file

SharingSend a clip people can open

Troubleshooting

If something looks off

The WMV will not play

Some players are picky about codecs. Try it in VLC, which opens almost anything, or convert again and let the converter re-encode the video.

The file got larger

A format change can shift the size, and re-encoding at a high bitrate adds overhead. Lower the bitrate or trim the clip for a smaller file.

Audio and video drift out of sync

Re-download the source and convert again. If a long recording drifts, splitting it into shorter pieces usually fixes the sync.

FAQ

AVI to WMV questions

Why convert AVI to WMV?

WMV is Microsoft's compact video format, so people convert AVI to WMV for smaller files that play in Windows Media Player or embed in an older PowerPoint slide. If you need playback beyond the Windows world, convert AVI to MP4 instead, since it is far more universal.

Is WMV smaller than AVI?

Usually, yes. AVI often wraps older codecs that are large for their quality, while WMV uses Windows Media compression that produces a smaller file. The exact size depends on the bitrate you pick, which you can preview using the estimator on this page.

Does converting AVI to WMV reduce quality?

The video is re-encoded into Windows Media video, so the WMV can only be as good as the source AVI, never sharper. A reasonable bitrate keeps it visually close to the original, and smaller files trade a little detail for a lighter download.

Will the WMV play on a Mac?

WMV is a Windows-first format, so it does not play in the default Mac apps. VLC opens it on macOS without any extra setup. If your audience is on a mix of devices, convert AVI to MP4 for the broadest reach.

Can I embed the WMV in PowerPoint?

Yes. WMV has long been a reliable choice for video inside PowerPoint on Windows, especially in older versions of Office. Convert your AVI to WMV, then insert the file as a video on your slide.

Is the AVI to WMV converter free?

Yes. EchoWave converts AVI to WMV with no signup, no account to create, no trial, and no watermark. Upload your AVI, convert it, and download the WMV from your browser.

How do I convert AVI to WMV?

Upload your AVI, choose WMV as the output format, and start the conversion. When it finishes, download the WMV, or open the clip in the editor first to trim, crop, or resize it.

Can I convert a large AVI file?

Yes. There are no file-count limits on these pages, and large AVI files are supported. A bigger file simply takes a little longer to upload and convert before the WMV is ready to download.