UNIVERSAL MEDIA CONVERTER

MKV to MP4 Converter

Convert MKV video into MP4 for devices and apps that do not handle MKV consistently.

MP4MOVMKVWebMMP3WAVFLAC+ more

✓ No signup✓ Batch up to 3✓ Auto cleanup

Converter readyUp to 400 MB per request • 250 MB per file

250 MB per file400 MB per request45 min max video~30 min auto-delete

Drop MKV files here or click to browse from your device No files selected MP4, MOV, MKV, AVI, WebM, MP3, WAV, FLAC, M4A, AAC, OGG, OPUS + more

Popular:

Convert to Recommended MP4 is recommended for broad video compatibility.

Output quality

Highlarger file Balancedrecommended Smallermore compression

Smart output: MP4Best overall compatibility for video playback and sharing.

Size depends on source

Advanced settingsFine-tune the output

Maximum resolutionNever intentionally upscales; server limit: 1080p. Audio bitrateUsed by compressed audio outputs and video audio tracks. Sample rate48 kHz is common for video production. Output filename

.mp4

Available for single-file conversion. Trim startOptional HH:MM:SS or seconds. Trim endLeave blank to convert to the end. Remove audioCreate silent video output.

✓ Format-aware settings✓ Live queue progress✓ Files expire after ~30 min

RELATED CONVERTERS

More Useful Conversion Paths

Explore closely related formats without digging through a giant list of every theoretical combination.

3GP → MP4Convert 3GP video to MP4 for playback, sharing, editing or compatibility with software and devices. AVI → MP4Modernize AVI video into the more widely supported MP4 format. FLV → MP4Convert FLV video to MP4 for playback, sharing, editing or compatibility with software and devices. M4V → MP4Convert M4V video to MP4 for playback, sharing, editing or compatibility with software and devices. MKV → AVIConvert MKV video to AVI for playback, editing, sharing or compatibility with another media workflow. MKV → MOVConvert MKV video to MOV for playback, editing, sharing or compatibility with another media workflow. MKV → MP3Extract a compatible MP3 audio file from an MKV video source. MKV → WAVExtract WAV audio from MKV media for editing, transcription or lossless downstream processing.

FORMAT SUPPORT

Video, Audio and Video-to-Audio Conversion

The same FFmpeg-powered engine handles common media workflows without forcing every user through technical codec menus.

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Video Converter

Convert MP4, MOV, MKV, AVI, WebM and other common video files to MP4, MOV, MKV, WebM, AVI or GIF.

MP4MOVMKVWEBMAVIGIF

♫

Audio Converter

Change MP3, WAV, FLAC, AAC, M4A, OGG, OPUS and other audio files into the format your player or workflow requires.

MP3WAVFLACAACM4AOGGOPUS

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Extract Audio

Upload a video and create MP3, WAV, FLAC, AAC, M4A, OGG or OPUS audio without keeping the video stream.

MP4 → MP3MOV → WAVMKV → FLAC

MKV TO MP4 GUIDE

Why Convert MKV to MP4?

Convert MKV video into MP4 for devices and apps that do not handle MKV consistently.

Recommended starting pointUse Original resolution to preserve the source dimensions.

INPUT

MKV

A flexible Matroska container that can hold high-quality video, multiple audio tracks and subtitle streams.

Rich local media files and flexible track support.

OUTPUT

MP4

A widely supported multimedia container used for web video, phones, TVs, presentations and general sharing.

Broad playback compatibility and everyday video delivery.

How to convert MKV to MP4

Upload your MKV file above.
Keep MP4 selected as the output.
Choose Balanced quality unless your workflow needs another setting.
Open Advanced settings only if you need trimming, resolution, bitrate, sample rate or a custom filename.
Start the conversion and download the finished file when it is ready.

Before you convert

Some phones, TVs and editing apps have less consistent MKV support than MP4. Re-encoding can change quality and file size even when the extension stays familiar.

Changing a container or codec cannot recreate quality already missing from the source, so keep an important original when possible.

Explore MKV conversions Explore MP4 conversions