Choose an audio tool
Pick a converter or editor from the audio tool list.
Free Online Audio Tools
Process audio locally in your browser for MP3, M4A, WAV, FLAC, compression, trimming, merging, and volume adjustment.
Audio conversionMP3 workflowsCompression settingsTrim audioMerge audio
14 audio tools
Popular Audio Tools
MP3 ConverterConvert common audio formats to real MP3 output locally in your browser.Use NowAudio ConverterConvert audio locally in the browser to MP3, WAV, M4A, AAC, FLAC, or OGG.Use NowTrim AudioTrim an audio file locally using start and end times.Use NowM4A to MP3Convert M4A audio to MP3 locally in your browser.Use NowWAV to MP3Convert WAV audio to MP3 locally in your browser.Use NowMP3 to WAVConvert MP3 audio to WAV locally with sample rate and bit-depth options.Use Now
Audio Conversion
MP3 ConverterConvert common audio formats to real MP3 output locally in your browser.Use NowAudio ConverterConvert audio locally in the browser to MP3, WAV, M4A, AAC, FLAC, or OGG.Use NowM4A to MP3Convert M4A audio to MP3 locally in your browser.Use NowWAV to MP3Convert WAV audio to MP3 locally in your browser.Use NowMP3 to WAVConvert MP3 audio to WAV locally with sample rate and bit-depth options.Use NowFLAC to MP3Convert FLAC audio to MP3 locally with bitrate options.Use Now
Audio Editing
Trim AudioTrim an audio file locally using start and end times.Use NowCompress AudioCompress audio locally by re-encoding to a lower bitrate.Use NowMerge AudioMerge multiple audio files locally in the order you choose.Use NowAudio Speed ChangerChange audio speed while preserving pitch in a real MP3 file.Use NowAudio Pitch ChangerShift audio pitch by up to 12 semitones while preserving duration.Use NowFade AudioAdd real fade in and fade out effects to audio locally in your browser.Use NowReverse AudioReverse an audio file locally and create a real MP3 result.Use NowLoop AudioRepeat an audio file 2, 3, or 5 times and download a real MP3 result.Use Now
How the Audio Tools Work
Add audio files
Upload one file, or multiple files for the merge tool, and review the original audio information.
Process locally
Adjust settings, run FFmpeg in the browser, preview the generated result, and download the output file.
Why Choose FastToolAI Audio Tools?
Common audio workflows covered
Supports common audio needs such as format conversion, extraction, and compression.
Use without registration
Open an audio tool and start processing without creating an account.
Local browser processing
Most audio tasks can be processed directly in your browser.
File safety protection
We reduce uploads whenever possible and prioritize audio privacy.
Common audio formats supported
Supports common audio formats such as MP3, M4A, WAV, and FLAC.
Audio Tools FAQ
Yes. Current audio conversion, compression, trimming, and merging tools can be used for free without buying desktop software.
No. Open the audio tool in your browser, add an audio file, and start processing.
Most audio tasks prioritize local browser processing to reduce uploads. Check each tool page for the specific processing method.
Supported formats vary by tool. Common formats include MP3, M4A, WAV, FLAC, AAC, OGG, and WebM.
Yes. Use MP4 to MP3 or extract audio from video to save the audio track as MP3.
It can. Conversion, compression, or bitrate changes may affect audio quality. Choose output settings based on your use case.
Current audio tools cover common conversions among MP3, M4A, WAV, and FLAC, with more audio workflows planned.
Yes. Mobile browsers can select local audio files, but large files are more stable on desktop.
No. Open an audio tool, add files, and start processing without creating an account or signing in.
Yes. After processing, a result file is generated for preview and download.
Some tools support multiple audio files, such as audio merge or split result downloads. Check each tool page for batch support.
Check that the format is supported, reduce file size, try another browser, or process again on desktop.