Audio tools
Free audio tools to cut, join, convert, and record sound — trim a track, merge clips, change format or speed, generate tones, and find a song's BPM, most running right in your browser.
- AI Audio Transcription
Audio transcription with Whisper. Drop in a recording and get editable text, plus SRT and WebVTT carrying timestamps, from any of four model sizes.
- AI Vocal Remover — Split Vocals & Instrumental
A vocal remover that splits a song into two stereo tracks, the voice on one and the instrumental on the other, using Deezer's Spleeter model.
- Audio Converter
A batch audio converter: load MP3, WAV, M4A, OGG or FLAC in any mix, queue as many as you like, and write M4A, WAV, Opus or FLAC back out with a zip at the end.
- Audio Cutter
An audio cutter that keeps every part you mark and throws away whatever falls between them, fades and crossfades included.
- Audio Joiner
An audio joiner for stitching clips into one track: queue them in order, set a crossfade if you want them to blend, then export M4A, WAV, Opus, or FLAC.
- Audio Normalizer
Normalize audio by its loudest peak: set a ceiling anywhere from 1 to 100 percent, and a quiet take rises to meet it.
- Audio Reverser
Reverse audio end to end and hear it play backwards, then save the flipped clip as M4A, Opus, WAV, or FLAC. Sample rate and pitch stay exactly where they were.
- Audio Speed Changer
Change audio speed anywhere from 0.5x to 2x: drop a track to 0.75x for a slowed edit, or lift it to 1.5x for nightcore. Pitch follows the speed. Exports as M4A, WAV, Opus or FLAC.
- Audio Visualizer
An audio visualizer that splits whatever's playing into 1,024 frequency bands and draws each one as a bar, updated every frame.
- BPM Counter
BPM counter with two ways to get an answer: analyze an audio file, or tap the beat out yourself. File detection always lands between 90 and 180 BPM.
- ID3 Tag Editor
Edit an MP3's ID3 tags: title, artist, album, genre and year. Fix a track that shows up as Unknown Artist.
- Mono ↔ Stereo Converter
Stereo to mono, or mono to stereo: pick a direction and get the file back as M4A, Opus, WAV, or FLAC.
- Remove Background Noise from Audio
Remove background noise from audio with DeepFilterNet, an 8.6 MB speech model. Hum, fans and chatter drop away, the voice stays, and the clean take saves as M4A, WAV, Opus or FLAC.
- Silence Remover
Remove silence from audio automatically. Two numbers decide what goes: how quiet a gap has to be, and how long it has to last.
- Text to Speech
Text to speech two ways: the voices your device already has, or a 13-voice English model that hands you a file.
- Tone Generator
A tone generator for exact frequencies: type 440, choose sine, press Generate. White, pink, and brown noise too.
- Voice Recorder
A voice recorder with a real pause: hold the take, breathe, carry on into the same file. Live input meter, a mic picker when you have more than one, and M4A, WAV, Opus or FLAC out.
These audio tools handle the everyday sound jobs without a desktop editor — trim or cut a clip and fade the ends, join several files into one, convert between MP3, WAV, M4A, OGG, and FLAC, record your voice or microphone, change speed and pitch, normalize loudness, strip silence, generate test tones and noise, and find a track's BPM. Each opens instantly with no sign-up, no watermark, and no upload limit.
Most run entirely in your browser using the Web Audio API and the same WebCodecs engine as the video tools, so your recordings and music stay on your device — which matters for voice memos, private samples, and unreleased tracks. The heavier jobs download their codec engine once on first use, then keep working from cache.