Free online converter

File Converter

Convert audio and video between every common format — MP3, WAV, M4A, FLAC, MP4, MOV, WEBM, MKV — or turn a clip into a GIF. It all runs in your browser: your files are never uploaded.

Drop files here or choose filesMP3, WAV, M4A, FLAC, OGG, OPUS, AAC, MP4, MOV, WEBM, MKV, AVI · up to 1 GB eachFiles are converted in your browser. Nothing is uploaded.

No upload

Converted on your device

No sign-up

Free, no daily limit

No watermark

Your file, untouched

Batch

Several files at once

All conversions

Supported formats

MP3 · Audio

The most widely supported audio format. Lossy compression keeps files small — about 1.4 MB per minute at 192 kbps — while sounding transparent to most listeners.

WAV · Audio

Uncompressed PCM audio. Every sample is stored as-is, so there is nothing to decode and nothing lost — at the cost of roughly 10 MB per minute of stereo.

M4A · Audio

AAC audio in an MPEG-4 container — the format Apple uses for iTunes, Voice Memos and GarageBand exports. Better quality than MP3 at the same bitrate.

FLAC · Audio

Lossless compression: bit-for-bit the same audio as a WAV, in roughly half the space. The standard for archiving CDs and hi-res music.

OGG · Audio

An open, royalty-free lossy format used by games, Spotify and many Linux tools. Also the container WhatsApp and Telegram use for voice notes.

OPUS · Audio

The most efficient modern speech and music codec, used for WhatsApp voice messages, Discord and video calls. Many players and editors still cannot open it.

AAC · Audio

Raw AAC audio without a container. Same codec as M4A, but some players and car stereos handle the bare .aac file badly.

MP4 · Video

The universal video format. H.264 video with AAC audio in an MP4 plays on every phone, browser, TV and social network.

MOV · Video

Apple’s QuickTime container — what iPhones and Macs record by default. Great on Apple devices, less so on Windows, Android and some websites.

WEBM · Video

Google’s open web video format (VP8/VP9 video, Vorbis/Opus audio). Browsers play it natively; iPhones, video editors and WhatsApp often do not.

MKV · Video

A flexible container that can hold almost any codec plus multiple audio and subtitle tracks. Common for films and screen recordings (OBS), rarely accepted by phones or social networks.

AVI · Video · input only

A legacy Microsoft container from the 1990s, still produced by old cameras, DVRs and screen recorders. Large files and patchy support on modern devices.

Frequently Asked Questions

Which formats can I convert?

Audio: MP3, WAV, M4A, FLAC, OGG, OPUS and AAC. Video: MP4, MOV, WEBM, MKV and AVI. Any audio file can go to another audio format or to an MP4 video with a still image; any video can go to another video format, to audio, or to an animated GIF.

Is it free?

Yes — no sign-up, no daily limit and no watermark. Your browser does the conversion, not our servers.

Are my files uploaded?

No. Everything happens on your device and the file never leaves it. You can check: once the converter has loaded, it even works offline.

Why does the first conversion take longer to start?

The first time, the browser downloads the conversion engine (about 30 MB). After that it is cached and conversions start straight away.

How long does it take?

Changing the container — an iPhone MOV to MP4, an OBS MKV to MP4 — takes seconds, because the video is copied without re-encoding. Audio conversions are fast. Re-encoding video, WEBM to MP4 for example, happens on your device and can take longer than the video itself.

I have a link, not a file

For YouTube, TikTok or X videos use the SnapMedia downloader: paste the link and download it straight to MP3, WAV or MP4.