Free Online Audio Tools
These free audio tools convert, trim and extract audio entirely in your browser. They run FFmpeg compiled to WebAssembly, so your recordings, voice memos and videos are processed on your own device and never uploaded to a server — there is no account, no watermark and no daily limit.
The Audio Converter turns a file into MP3, WAV, M4A, OGG or FLAC, whether you need a smaller MP3 for sharing or a lossless copy for editing. The Audio Cutter shows the waveform so you can select exactly the part you want, add a fade in or fade out, and save the clip — including as an iPhone ringtone (M4R). Video to MP3 pulls the soundtrack out of MP4, MOV, WebM and MKV files, which is handy for lectures, interviews and screen recordings where only the audio matters. If you need to shorten or shrink the video itself, the Video Trimmer and Video Compressor sit alongside them.
The first time you open one of these tools, the browser downloads the FFmpeg engine (about 30 MB) from a CDN; after that it is cached. Processing speed depends on your device, so long files are fastest on a desktop browser.
All Audio Tools (5)
Audio Converter
Convert to MP3, WAV, M4A, OGG or FLAC.
Open tool →Audio Cutter
Trim audio with fades, make ringtones.
Open tool →Video to MP3
Extract audio from MP4 and other videos.
Open tool →Video Trimmer
Cut videos to exact start and end times.
Open tool →Video Compressor
Reduce video file size in your browser.
Open tool →Frequently Asked Questions
Are my audio files uploaded to a server?↓
No. Conversion, trimming and extraction run locally in your browser with FFmpeg compiled to WebAssembly. Only the engine itself is downloaded from a CDN on first use; your files are never sent anywhere.
Which audio formats can I convert to?↓
The Audio Converter outputs MP3, WAV, M4A, OGG and FLAC. The Audio Cutter can also save a trimmed clip as an M4R ringtone for iPhone.
How do I extract MP3 audio from a video?↓
Open Video to MP3, add an MP4, MOV, WebM or MKV file, and download the extracted audio. The video is read in your browser and is not uploaded.
Why does the first conversion take longer?↓
On first use the browser downloads the FFmpeg engine, which is about 30 MB, and caches it. Later conversions start much faster. After that, the time depends on the file's length and your device's processor.
Are the audio tools free?↓
Yes. They are completely free with no signup, no watermark and no limit on the number of files. The only practical limit is your device's memory, so very long recordings work best on a desktop computer.
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