The audio toolkit for musicians

Free online audio tools for musicians, all in one place.

Find BPM and key, convert, cut, master and more — 36 tools that run right in your browser, built for producers, beatmakers and engineers.

Analysis

Understand a track before you work with it. Detect BPM and musical key, tune kicks and 808s, and run a full pre-release check on loudness, true peak and clipping. Every analysis covers the whole file for reliable results.

  • BPM finder — Find the exact tempo of any track.
  • Key finder — Instant musical key + 440 / 432 Hz tuning detection.
  • Kick & 808 tuner — Find a kick or 808's pitch and tune it — without changing its length.
  • Release checker — One pass: loudness, true peak, clipping, mono and silence — is your master ready to distribute?
  • Mix Check — Hear your mix on a phone speaker, laptop, earbuds, car and more — check how it translates.

Cut & structure

Shape your audio: trim a section, add fades, merge takes, build seamless tempo-locked loops or blend tracks into a medley. Everything is processed locally in your browser, so even long files stay private.

  • Trim / cut — Keep exactly the section you want.
  • Fade in / out — Add smooth fade in and fade out.
  • Merge — Join several tracks into one file.
  • Loop maker — Turn any part into a seamless, tempo-locked loop.
  • Reverse — Play any track backwards.
  • Medley maker — Blend several tracks into one seamless medley.

Conversion & files

Move between formats without leaving the page: convert WAV, MP3, FLAC, AIFF, OGG and M4A, extract audio from video, resample, split channels and edit ID3 tags. Handy for delivering exactly the format a distributor or collaborator asks for.

Correction & restoration

Fix what's wrong before it ships: normalize to streaming loudness targets, change tempo or pitch independently, repair phase issues, gate breaths out of vocal takes and polish vocals with reverb, EQ and delay.

  • LUFS meter & normalize — Measure LUFS, true peak and dynamics — and normalize to streaming targets.
  • Time stretch — Change a track's tempo without changing its pitch.
  • Pitch shift — Transpose a track up or down in semitones, without changing its speed.
  • Phase invert — Flip the polarity of a track to fix phase issues or cancel a signal.
  • Silence gate — Clean up a vocal take — mute breaths and gaps without losing sync.
  • Voice FX — Add reverb, EQ and delay to your vocals.

Generators & metering

Studio utilities for everyday work: metronome and exportable click tracks, an instrument tuner, test tones, a spectrogram and clipping detector to diagnose a mix, plus video makers that turn your cover art into Spotify Canvas-ready visuals.

  • Metronome — Precise metronome with time signatures, subdivisions and swing.
  • Instrument tuner — Tune your guitar, bass or ukulele with your mic.
  • Click track — Generate a metronome click track to import into your DAW.
  • Tone & noise generator — Test tones, noise and reference pitches for checking gear.
  • Spectrogram — Visualize your track's frequency content to diagnose your mix.
  • Clipping detector — Find and locate clipping before you distribute.
  • Reverb & delay time — Tempo-synced delay and reverb times from any BPM.
  • Audio visualizer — Turn your artwork into an animated video for Spotify Canvas and Reels.
  • Podcast — Add background music to your podcast with automatic ducking.
  • Cover video — Turn a cover image + audio into a video — 9:16, 1:1, 4:5 or 16:9.

Creation & beats

Sketch ideas right in the browser. The Beat Maker is a 16/32-step sequencer with 808 and 909 kits, support for your own samples, swing, and WAV/MP3 export to bring your pattern into any DAW.

  • Beat Maker — Program drum beats on a 16/32-step sequencer — 808 & 909 kits, your own samples, swing, WAV/MP3 export.

AI Tools

Heavy lifting that doesn't fit in a browser: separate vocals from instrumentals, generate distributor-ready cover art, or auto-transcribe a song into a synced lyrics video. These tools run on our servers and are part of the Premium plan.

  • Voice Remover — Separate any song into vocals and instrumental.
  • Cover Art Generator — Generate album cover art from a prompt — 3000×3000, ready for distributors.
  • Lyrics Video — Auto-transcribe your song and burn synced lyrics onto a looping video — ready for Reels.

FAQ

Is AudioKit really free?

Yes — the 33 browser tools are free with a quota of 5 uses per day, no account and no watermark. AudioKit Premium (€9.90/month or €99/year) removes the daily limit and unlocks the AI tools (Voice Remover, Cover Art Generator, Lyrics Video), which include monthly generation credits.

Are my audio files uploaded to a server?

Not for the browser tools: trimming, converting, BPM detection and the rest run entirely on your device using WebAssembly and the Web Audio API — the only network call is a small anonymous counter for the daily quota. The premium AI tools are the exception: your file is sent to our server over an encrypted connection, processed by the AI model, and the result is returned to you.

Do I need an account?

No. All free tools work without signing up — just open a tool and drop your file. You only need an account (with a Premium plan) for the AI tools, for saving your creations to your space and for pinning favorite tools.

What can I do with AudioKit?

Most everyday audio tasks a musician runs into: find a song's BPM or key, convert between WAV, MP3, FLAC and more, trim and merge tracks, normalize loudness for streaming, check a master for clipping, program beats, tune your instrument — and with Premium, separate vocals, generate cover art or create synced lyrics videos.

Which audio formats are supported?

Most tools accept MP3, WAV, FLAC, OGG and M4A; the converter also outputs AIFF. If you start from a video, the audio extractor pulls the soundtrack from common video formats first.