TUNEBAD

File Analysis Tool

Upload an audio file to view waveform and analyze key musical data.

Drop audio fileWAV, MP3, M4A, FLAC, OGG up to 200MB

Analysis Results

File NameDurationBPMKeyCamelotConfidenceAnalyzed
No tracks analyzed yet.

BPM Tool

Tap a tempo or run a precise metronome from the same BPM source.

Metronome

Tempo-locked click with accent control.

14/4

BPM Tapper

Tap along and send the result to every tempo tool.

Pitch Tools

Convert frequency to nearest note, octave, and cents offset.

Frequency to Pitch

Powered by the MIDI fractional note formula.

Hz
A40 cents

Converter

Download from YouTube, Spotify, SoundCloud, and more as an MP3, WAV, or MP4. You can also convert a file from your computer.

Paste a Link

Works with YouTube, SoundCloud, Bandcamp, Vimeo, Mixcloud, Audiomack, and Spotify. For personal use only. The first conversion can take a minute to wake up.

Format
Output Quality
IdlePaste a link and pick a quality to create an MP3.

Local Audio File

Convert local audio files entirely in your browser.

Audio File
Browse filesNo file selected
Format
Output Quality
IdleUpload WAV, M4A, OGG, FLAC, or another browser-readable audio file to create an MP3.

Loudness Penalty

See how much each streaming service will turn your track down.

Drop audio fileWAV, MP3, M4A, FLAC, OGG

Slowed + Reverb Studio

Slow down, speed up, add reverb, and reshape any track.

Drop audio fileMP3 or WAV up to 200MB
Upload a trackDrop an MP3 or WAV to slow it down, speed it up, and add reverb.

MP3 Cutter

Trim a song down to the part you want, add a fade, and save it as an MP3 or WAV. Everything runs in your browser.

Drop audio file
SelectionDrop audio file

Analysis History

Recent local results stay on this device.

No saved analyses yet.

Free tools for producers and DJs

TuneBad is a free set of tools for anyone who works with music. Find a song's key, BPM, and loudness, turn a YouTube or Spotify link into an MP3, slow a track down and add reverb, change the pitch, or work out delay times for your mix. It all runs in your browser, with no ads and no account.

  • 100% free

    Every tool is free to use. No trial, no paywall, nothing to upgrade.

  • No ads, no sign-up

    You don't need an account, and nothing pops up to get in the way.

  • Stays on your device

    The analysis runs in your browser, so your files never get uploaded.

  • All in one place

    Key and BPM, the converter, loudness, slowed + reverb, the MP3 cutter, pitch, and delay times.

Frequently asked questions

How do I find the key and BPM of a song?

Open the Key & BPM Finder and drop in an audio file. In a few seconds you get the key, tempo, Camelot code, and loudness. No account needed.

Is TuneBad free?

Yes, completely. No ads, no account, and nothing hidden behind a paywall.

Can I convert a YouTube or Spotify link to MP3?

Yes. Paste a YouTube, Spotify, or SoundCloud link into the Converter and save it as an MP3, WAV, or MP4. Please keep it to personal use.

Does my audio get uploaded to a server?

No. When you analyze a track, that happens right in your browser, so the file never leaves your device.

How accurate is the BPM and key detection?

It runs on essentia, the same engine behind a lot of the popular tools. Plenty of songs can be read at two tempos (say 85 or 170), so TuneBad shows both and lets you pick the one that feels right.

What is slowed + reverb?

It's that dreamy, spaced-out remix style where a track is slowed down with a lot of reverb on top. You can make one in the Slowed + Reverb studio and export it when it sounds right.