Who usually has MKV files?

MKV files are common for downloaded movies, anime, screen recordings, and long-term video backups. Many video recorders, OBS, and capture cards can output MKV for its reliability and ability to hold multiple tracks. However, these files are rarely accepted by Apple’s default apps.

Why can't QuickTime or iMovie open my MKV?

QuickTime and iMovie do not support the MKV container or many of the codecs it can hold. Even if the video is H.264, Apple apps expect it inside MOV or MP4. Converting to MOV with H.264/AAC makes the file usable in these programs.

Will converting MKV to MOV make my video smaller?

It can, but not always. If your MKV uses high bitrates, the MOV may be smaller after re-encoding to H.264 (CRF 23) and AAC 128 kbps. For typical 4-minute 1080p clips, expect a 10–25% reduction. If the MKV was already compressed efficiently, sizes may be similar.

Is there any way to avoid quality loss?

Not with this tool. It always re-encodes. To avoid loss, you would need to 'remux' (copy streams) using desktop software like MKVToolNix or ffmpeg, and only if the codecs inside are already MOV-compatible (H.264/AAC). Most browser-based tools can't do this safely.

Are there built-in alternatives to convert MKV to MOV?

No built-in Windows or Mac tool converts MKV to MOV directly. QuickTime and Windows Photos don't open MKV files for conversion. VLC can convert MKV to MP4, but not MOV. For MOV output, free apps like HandBrake (with tweaks) or paid editors are needed, or use an online tool like this.

Can I convert MKV to MOV on my phone?

Yes, this tool runs in Chrome or Safari on mobile. However, large files (over 500 MB) may run out of memory on phones and tablets. For best results, use a laptop or desktop for long or high-resolution videos.

Which devices will play the MOV output?

The MOV produced here (H.264 video, AAC audio) plays on all Apple devices, most modern Windows PCs, and in major editors. Old devices or apps that require legacy formats (like DV or ProRes) may not accept this MOV, but QuickTime, iMovie, and Final Cut will.

Does this tool support batch conversion?

No, you can only convert one MKV at a time. After downloading the MOV, start the next conversion. This avoids running out of browser memory and keeps conversion stable for larger files.

MKV → MOV

MKV to MOV Converter

Drop a file here

Click to browse, or paste a file from the clipboard.

Choose file

This MKV to MOV converter re-encodes your video using H.264 (x264 ultrafast, CRF 23) and AAC 128 kbps audio. It runs entirely in your browser—no file ever leaves your device. Drop your MKV, convert, and download a MOV file that works in QuickTime, iMovie, and many Mac and iOS apps.

How to convert MKV to MOV

Drop your MKV file into the box above or click Browse to select it from your computer.
Wait while the video loads and is prepared for conversion. No settings need to be changed.
Click Convert and let the tool re-encode your video to MOV format.
Download the MOV file when it's ready. Your file stays on your device the whole time.

Why convert MKV to MOV?

MKV (Matroska Video) is a flexible, open-source container often used for high-quality downloads, screen recordings, and archival footage. It can hold nearly any video or audio codec, plus subtitles and chapters. But MKV is not natively supported by Apple software. QuickTime, iMovie, and many default Mac and iOS apps refuse to open MKV files, even if the video inside is common (like H.264).

If you want to edit a clip in iMovie, play it reliably in QuickTime, or share it with Apple users, MOV is the safer choice. MOV is Apple’s preferred container. It’s widely supported on Macs, iPhones, iPads, and many pro editing systems. By converting MKV to MOV with H.264 video and AAC audio, you maximize compatibility. This is essential when the original MKV holds codecs or audio tracks QuickTime won’t recognize.

A typical 4-minute 1080p MKV (H.264, AC3 audio, 8 Mbps video) is about 240 MB. After converting to MOV (H.264 at CRF 23, AAC 128 kbps), expect the MOV to be similar or slightly smaller—around 180–220 MB, depending on the source bitrate. There may be a minor quality loss from re-encoding, but most users won’t notice at these settings. If your MKV video uses high bitrates or lossless codecs, the MOV output may be smaller but not lossless.

You should not convert if you plan to keep the highest possible quality for archiving, or if your MKV already plays as needed. Every re-encode discards some original data, even if the visual difference is small. If you just want to play the MKV on Windows, use VLC or another universal player. Only convert when you need to edit or share with Apple devices, or when a specific app demands MOV.

If your MOV is too large after conversion, compress the video before sending. To cut a clip before converting, trim your video to avoid re-encoding more than needed.

MKV vs MOV: what's the difference?

Property	MKV	MOV
Extension	.mkv	.mov
Type	Matroska container	QuickTime container
Typical size (4 min, 1080p)	200–300 MB	180–220 MB (H.264/AAC)
Video codecs supported	H.264, HEVC, VP9, AV1, many more	H.264, ProRes, MPEG-4, DV
Audio codecs supported	AAC, AC3, DTS, FLAC, MP3, etc.	AAC, ALAC, PCM, MP3
Device support	Windows, Linux, some TVs, VLC	Mac, iOS, QuickTime, iMovie, Final Cut

MKV is an open-source container popular for video downloads and archiving, but it is not natively supported by Apple software. MOV is Apple's preferred container, widely compatible with Mac, iPhone, and editing apps.

Does converting MKV to MOV reduce quality?

Yes, some quality is lost. This converter always re-encodes the video to H.264 using x264 at CRF 23 (ultrafast preset), and audio to AAC at 128 kbps. There’s no option to copy streams or choose a different bitrate. For most home videos, screen recordings, and web downloads, the result is visually close to the original. If your MKV started as lossless or very high bitrate, you may see a reduction in sharpness or fine detail.

The preset is tuned for speed and broad compatibility, not archival quality. If you need perfect preservation, keep your original MKV. For sharing, playback, or editing in Apple software, this MOV output is usually a good compromise between size, speed, and quality.

When should you NOT convert MKV to MOV?

Do not convert if your MKV already plays everywhere you need. VLC, Plex, and many smart TVs handle MKV directly. Re-encoding is only needed for Apple workflows or when a site or app rejects MKV uploads.

If you need frame-perfect retention for editing, or if your MKV uses rare codecs, consider using pro tools that allow precise control over conversion settings. Remember, every re-encode is a generation lost. If archiving is your goal, keep the original MKV alongside your MOV.

Frequently asked questions

Who usually has MKV files?: MKV files are common for downloaded movies, anime, screen recordings, and long-term video backups. Many video recorders, OBS, and capture cards can output MKV for its reliability and ability to hold multiple tracks. However, these files are rarely accepted by Apple’s default apps.
Why can't QuickTime or iMovie open my MKV?: QuickTime and iMovie do not support the MKV container or many of the codecs it can hold. Even if the video is H.264, Apple apps expect it inside MOV or MP4. Converting to MOV with H.264/AAC makes the file usable in these programs.
Will converting MKV to MOV make my video smaller?: It can, but not always. If your MKV uses high bitrates, the MOV may be smaller after re-encoding to H.264 (CRF 23) and AAC 128 kbps. For typical 4-minute 1080p clips, expect a 10–25% reduction. If the MKV was already compressed efficiently, sizes may be similar.
Is there any way to avoid quality loss?: Not with this tool. It always re-encodes. To avoid loss, you would need to 'remux' (copy streams) using desktop software like MKVToolNix or ffmpeg, and only if the codecs inside are already MOV-compatible (H.264/AAC). Most browser-based tools can't do this safely.
Are there built-in alternatives to convert MKV to MOV?: No built-in Windows or Mac tool converts MKV to MOV directly. QuickTime and Windows Photos don't open MKV files for conversion. VLC can convert MKV to MP4, but not MOV. For MOV output, free apps like HandBrake (with tweaks) or paid editors are needed, or use an online tool like this.
Can I convert MKV to MOV on my phone?: Yes, this tool runs in Chrome or Safari on mobile. However, large files (over 500 MB) may run out of memory on phones and tablets. For best results, use a laptop or desktop for long or high-resolution videos.
Which devices will play the MOV output?: The MOV produced here (H.264 video, AAC audio) plays on all Apple devices, most modern Windows PCs, and in major editors. Old devices or apps that require legacy formats (like DV or ProRes) may not accept this MOV, but QuickTime, iMovie, and Final Cut will.
Does this tool support batch conversion?: No, you can only convert one MKV at a time. After downloading the MOV, start the next conversion. This avoids running out of browser memory and keeps conversion stable for larger files.