Convert MTS to AVI online in seconds — free, with no sign-up. AVI is lossy and ideal for legacy video; usually converted to MP4 or WebM. Your files are encrypted and deleted automatically after 24 hours.
AVI
Audio Video Interleave — An older Microsoft container with large file sizes and limited modern support.
How to convert MTS to AVI
- 1Upload your MTS file
Click “Choose a file” or drag and drop your MTS file onto the page — no sign-up or email needed.
- 2Convert to AVI
AVI is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your AVI file
Your AVI file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
Frequently asked questions
Does converting MTS to AVI lose quality?
Converting MTS to AVI keeps your content intact. We use high-quality defaults so your AVI file looks as close to the original as the format allows.
Is the MTS to AVI converter free?
Yes — converting MTS to AVI is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my MTS files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert MTS to AVI on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert MTS to AVI?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert MTS files to?
Besides AVI, you can convert MTS to AAC, FLAC, FLV, GIF, JPG, M4A and more — see the full list of MTS conversions below.
Other conversions
Last updated July 2026