Free converters that run on your device
Pick a converter. Files are processed inside your browser and are never uploaded.
Your file never leaves your device: the conversion runs inside your browser, nothing is uploaded to any server.
Video tools
Video
Audio
Convert MP4 to MP3Convert video to MP3Convert video to M4AConvert MP3 to M4AConvert MP3 to WAVConvert M4A to MP3Convert M4A to WAVConvert WAV to MP3Convert WAV to M4AConvert OGG to MP3Convert OGG to M4AConvert OGG to WAVConvert OPUS to MP3Convert OPUS to M4AConvert OPUS to WAVConvert FLAC to MP3Convert FLAC to M4AConvert FLAC to WAVConvert AAC to MP3Convert AAC to M4AConvert AAC to WAV
Images
Frequently asked questions
Is my file uploaded?
No. The converter is downloaded to your browser once and runs there; your file stays on your device.
Is there a size limit?
Large files depend on your device's memory. Up to a few hundred megabytes works on most computers and recent phones.
Why is the first conversion slower?
The first time, your browser downloads the converter (about 30 MB). After that it is cached.