Audioknife is a set of free online audio tools: an audio converter, a 10-band equalizer, a noise remover, a BPM & key finder, an audio cutter and a LUFS loudness meter. They work on your phone or computer, and your files never leave your device. No upload, no sign-up, no watermark.
9 tools
Trim songs on a waveform, add fades, make ringtones.
Merge several songs or clips into one file, with gaps or crossfades.
Add a smooth fade at the start and end of any track.
Make audio louder without distortion, or normalize it.
Speed up or slow down audio and keep the pitch.
Move a song up or down in key by semitones.
Play any sound or song backwards.
10-band EQ with presets like bass boost and vocal clarity.
Clean up voice recordings: remove hiss, hum and fan noise.
13 tools
Popular format converters
2 tools
No tool matches that yet. Try “convert”, “cut” or “loud”.
Files are processed on your own device with the Web Audio API. Nothing is uploaded, so unreleased songs and private recordings stay private.
No upload queue and no download wait. Most tools finish in seconds, even on a phone.
No account, no watermark, no daily limit. Just open a tool and use it.
Yes. All tools are free to use with no account and no watermark.
No. Files are processed on your own device by your browser and are never sent to a server.
Yes. They work in modern mobile browsers such as Safari on iPhone and Chrome on Android.