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Nº 01 — the free audio workbench

Edit, convert and shape sound online

Cut, convert, clean up and add effects to audio right in your browser. Your files stay on your device, and there is nothing to install.

I.

Edit

II.

Effects

III.

Convert

IV.

Music

Converters

MP3 Converter12WAV Converter12AAC Converter12AIFF Converter12FLAC Converter12M4A Converter12M4R Converter12MIDI Converter12MMF Converter12OGG Converter12Opus Converter12WMA Converter12

Every tool

Audio EditorCut, paste, fade and fix audio on a waveformCut AudioTrim any audio file to the part you needCut MP3Trim MP3 songs and recordings in secondsSplit AudioDivide long audio into parts or tracksMerge AudioJoin several audio files into oneMix AudioLayer voice, music and sounds on a timelineCompress AudioMake audio files smaller for email and chatCompress MP3Shrink MP3 files with a lower bitrateIncrease VolumeMake quiet audio louder without distortionIncrease MP3 VolumeBoost quiet MP3 files with a limiterNoise ReductionRemove hiss, hum and background noiseVocal RemoverMake a karaoke track or isolate the vocalsiPhone Ringtone MakerMake an M4R ringtone up to 40 secondsAudio EffectsChain echo, reverb, EQ, pitch and moreEchoAdd repeats and space to any recordingReverbPlace your sound in a room, hall or churchDelayTimed repeats for vocals, guitar and synthsEqualizer10-band EQ to fix and shape the toneBass BoosterAdd deep, clean bass to songs and videosPitch ShifterChange the key without changing the tempoChange SpeedSlow down or speed up, with or without pitchReverse AudioPlay any sound or song backwardsAmplifyRaise or lower the level by exact decibelsNormalizeBring audio to a standard peak or loudnessChorusThicken and widen voices and instrumentsFlangerSweeping jet sound for guitar, drums and voiceStereo PannerMove sound left or right, change stereo width8D / 3D AudioMake music circle around your headMetronomeSteady click from 20 to 300 BPM with accentsBPM CounterTap along to find the tempo of a songBPM FinderDetect the tempo of a song from its fileSpectrum AnalyzerSee frequencies, spectrogram and waveform liveHeardleGuess the daily melody from a short clipVoice ChangerRobot, chipmunk, deep, radio and more voicesAudio RecorderRecord your voice and save it as MP3 or WAVMicrophone TestCheck if your mic works and how it soundsText to SpeechRead text aloud and save it as MP3MP3 to TextTranscribe speech to text on your deviceVideo to AudioExtract the sound track from any video fileMP4 to MP3Save the sound of an MP4 video as MP3Audio to VideoTurn audio into an MP4 with a pictureMP3 to VideoMake an MP4 from an MP3 and an imageMP3 to MP4Turn an MP3 into an MP4 video with a pictureYouTube to MP3Turn your own YouTube videos into MP3 filesSoundCloud to MP3Convert SoundCloud downloads to MP3SoundCloud DownloadLegal ways to save SoundCloud tracks

What you can do here

AudioToolSet is a set of free audio tools that open in any modern browser. Drop a file on this page, pick a tool, and the file opens in it. Each tool does one job well, and they share the same layout: a waveform, playback controls, settings on the side and an export panel.

  • Edit: the audio editor lets you select, cut, copy, paste, fade, change gain and undo any step. Simpler tools cut a single part, split a long recording, merge several files or mix tracks on a timeline.
  • Effects: echo, reverb, delay, chorus, flanger, a 10-band equalizer, pitch shift, speed change, bass boost, 8D audio, voice changer, noise reduction and vocal remover. You hear every change live before you export.
  • Convert: change between MP3, WAV, FLAC, M4A, AAC, OGG, OPUS, WMA, AIFF, M4R and MMF, convert several files at once, turn audio into MIDI notes or MIDI into audio, and extract the soundtrack from a video.
  • Music and voice: a metronome, BPM counter and BPM finder, spectrum analyzer, audio recorder, microphone test, text to speech and speech to text.

Your files never leave your device

Most online audio sites upload your file to a server, process it there and send it back. Here the work is done by your own computer or phone, inside the browser tab. The file is read from your disk, processed in memory and saved back with the download button. Nothing is sent to us, so private recordings, interviews and unreleased songs stay private. It also means there is no upload wait, no queue and no file size limit set by a server. The real limit is the memory of your device; most computers handle files of one hour or more.

How it works without a server

The tools use the audio engine that is built into every modern browser, plus a version of the FFmpeg library compiled to run in the browser for formats the browser cannot read or write by itself. Heavy work runs in the background, so the page stays responsive while a long file is processed. Some tools load an extra component the first time you use them, for example the speech recognition model or the MIDI sound bank. After that first load, most tools keep working even if your internet connection drops.

Supported formats

You can open almost any common audio file: MP3, WAV, FLAC, M4A, AAC, OGG, OPUS, WMA, AIFF, AMR and more. Video files such as MP4, MOV, MKV and WEBM are accepted wherever the tool needs only the sound. For export you choose the format and the quality: bitrate for MP3 and AAC, bit depth for WAV and FLAC, sample rate and mono or stereo. If you are not sure, MP3 at 192 kbps is a good choice for sharing, and WAV or FLAC keep full quality for further editing.

Where to start

To trim a song, open Cut MP3. To change a format, use the audio converter. To make a recording sound fuller, try echo or reverb. To make a file smaller for email or messengers, use Compress Audio. All tools are free to use, without an account and without a watermark.

Frequently asked questions

Is AudioToolSet free?

Yes. All tools are free, there is no account, no trial and no watermark on the result. The site is supported by ads.

Are my files uploaded to a server?

No. Files are processed inside your browser on your own device. They are not sent to us or to anyone else. Only the page itself and some tool components are downloaded from the site.

Do I need to install anything?

No. A current version of Chrome, Edge, Firefox or Safari is enough, on Windows, macOS, Linux, Android or iOS.

Is there a file size limit?

There is no limit set by us. Very large files depend on the memory of your device. A desktop computer usually handles recordings of an hour or longer; phones may be slower with long files.

Can I use the tools offline?

Once a tool has loaded, most of it keeps working without an internet connection, because all processing happens on your device. Tools that need a model or sound bank must download it once first.

Which format should I export to?

Use MP3 for sharing and playback almost anywhere, M4A or AAC for Apple devices, M4R for iPhone ringtones, and WAV or FLAC when you want to keep full quality for more editing.