Audio Tools
Free online audio tools that work in any browser, on a phone or a computer. Your audio files are processed on your own device and never uploaded.
All Audio Tools
4 tools
Audio Converter
Audio ToolsConvert WAV, MP3, M4A, OGG and FLAC files to MP3, WAV or OGG, without uploading them.
Audio Trimmer and MP3 Cutter
Audio ToolsCut a song or recording to the part you want, with fades, and save it as MP3 or WAV.
BPM Finder
Audio ToolsFind the tempo of a song from its file, check it with a click track, or tap along to the beat.
Pitch Shifter
Audio ToolsRaise or lower the key of a song without changing its speed, and hear it before you save.
Shortcuts WAV to MP3 Converter · MP3 to WAV Converter · M4A to MP3 Converter · OGG to MP3 Converter · FLAC to MP3 Converter · MP3 to OGG Converter
Compare Audio Tools
| Tool | Best for | Key facts |
|---|---|---|
| Audio Converter | Convert WAV, MP3, M4A, OGG and FLAC files to MP3, WAV or OGG, without uploading them. | Opens: WAV, MP3, M4A, AAC, OGG, Opus, FLAC Saves as: MP3 (128 to 320 kbps), WAV (16-bit), OGG Batch: Yes, with a ZIP download |
| Audio Trimmer and MP3 Cutter | Cut a song or recording to the part you want, with fades, and save it as MP3 or WAV. | Opens: MP3, WAV, M4A, AAC, OGG, Opus, FLAC Saves as: MP3 (128 to 320 kbps), WAV, OGG Precision: 0.1 second |
| BPM Finder | Find the tempo of a song from its file, check it with a click track, or tap along to the beat. | Ways to find the tempo: From a song file, or by tapping along Tempo range: 50 to 220 BPM, with half and double shown Check the result: Play with a click on every beat |
| Pitch Shifter | Raise or lower the key of a song without changing its speed, and hear it before you save. | Pitch range: 12 semitones up or down, plus or minus 50 cents Speed and length: Unchanged Preview: Live, while you move the slider |
Choosing the right audio format
Audio Tools on FreeMicroTools work on sound files inside your browser. The Audio Converter opens WAV, MP3, M4A, AAC, OGG, Opus and FLAC files and saves them as MP3, WAV or OGG, one at a time or as a whole batch in a ZIP. The Audio Trimmer and MP3 Cutter shows a file's waveform so you can keep just the part you want, or cut a part out, with fades. The BPM Finder measures a song's tempo from its file, or from your taps, and the Pitch Shifter moves a song to a higher or lower key without changing its speed. Songs, recordings and voice memos are never uploaded or stored.
Choose the output by what you will do with the file. MP3 plays on every phone, car, player and website, so it is the right choice for listening and sharing: 128 kbps suits speech and podcasts, 192 kbps suits most music, and 320 kbps keeps the most detail. WAV is uncompressed and loses nothing, which makes it the format for audio editors, DJ software, samplers and burning CDs, but it takes about 10.6 MB for every minute of CD-quality stereo. OGG is an open format that games, Android apps and open-source programs often expect.
Converting never improves sound that was already compressed: an MP3 turned into WAV sounds the same, only larger. Start from the best copy you have, keep lossless WAV and FLAC originals as your archive, and make smaller MP3s from them for your devices.
Questions
Which audio format should I convert to?
MP3 for listening and sharing, because it plays everywhere. WAV for editing, DJ software and CDs, because it loses nothing. OGG when a game, app or program asks for it.
Does converting audio lose quality?
Saving as WAV loses nothing. MP3 and OGG leave out detail that is hard to hear to make files smaller, and at 192 kbps or more most listeners cannot tell. No conversion can restore quality a file has already lost.
Are my audio files uploaded when I use these tools?
No. Every audio tool on FreeMicroTools works inside your browser, so your files never leave your device and nothing is stored.
Looking for something that is not here? Suggest a tool and it may well get built.