Free Online Audio Tools
Extract audio from videos, convert between audio formats and trim audio files. Everything runs in your browser, so your files stay private.
- MP4 to MP3Turn an MP4 video into an MP3 audio file.
- Audio ConverterConvert between MP3, WAV, M4A, AAC and FLAC.
- Extract AudioSave the soundtrack of a video as MP3, WAV or M4A.
- Trim AudioKeep only the part of an audio file you need.
Choosing the right audio tool
To get the sound from an MP4, use MP4 to MP3. For other video formats, or to save audio as WAV or M4A, use Extract Audio. Audio Converter changes one audio format into another, and Trim Audio keeps only the part you need.
How our tools work
Every MediaToolNest tool runs inside your web browser using FFmpeg, a trusted open-source media engine. Your files are processed on your own device and never uploaded, there is no account to create, and no watermark is added to your files. The first time you use a tool, your browser downloads the converter once; after that, it starts instantly.
Upload
Choose a file from your computer or phone. It stays on your device.
Choose settings
Pick a format, quality or time range. Sensible defaults are selected for you.
Process
Your browser converts the file in a few moments.
Download
Save the result. No sign-up, no watermark.
Audio guides
- AudioAudio Bitrate Explained: 128 vs 192 vs 256 vs 320 kbpsWhat does audio bitrate mean, and can you hear the difference between 128, 192, 256 and 320 kbps? Learn which MP3 bitrate to choose for each use.
- AudioBest Audio Formats Explained: MP3, AAC, WAV, FLAC and MoreA clear guide to the main audio formats, how MP3, AAC, M4A, WAV and FLAC differ, and which one to use for music, podcasts, recording and archiving.
- AudioHow to Extract Audio from a Video (MP3, WAV or M4A)Learn how to extract the audio from any video and save it as MP3, WAV or M4A, which format to choose, and how to keep the best possible quality.
- AudioMP3 vs WAV: What's the Difference and Which Should You Use?MP3 or WAV? Compare sound quality, file size and compatibility, and find out which audio format to use for music, podcasts, editing and sharing.