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, TikTok, Instagram, X, Bandcamp, Vimeo, Mixcloud, Audiomack, and Spotify. For personal use only. The first conversion can take a minute to wake up.

Format
Output Quality

Honest quality: streaming sources are about 128 to 160 kbps. A 320 kbps MP3 adds headroom, not detail. OPUS keeps the original stream untouched.

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 toolkit for anyone who works with music. Drop in a file, paste a link, or just type a song's name, and you'll get its key, BPM, and Camelot code, plus real songs that mix well with it. There's also a whole set of tools for cutting, converting, and reshaping audio, all free, with no ads and no account, and it runs right in your browser.

  • 100% free

    Every tool here is free, no trial that runs out and nothing to unlock.

  • Analyze almost anything

    Drop in an audio file, paste a YouTube, Spotify, or SoundCloud link, or just type a song's name. TuneBad finds the key, BPM, and Camelot code any of those three ways.

  • Built for harmonic mixing

    Every result comes from a growing database of analyzed songs and includes real tracks that mix well with it, matched by Camelot-compatible key and BPM.

  • Stays on your device

    Analysis runs right in your browser on the Essentia audio engine, so your files never get uploaded anywhere.

What's on TuneBad

  • Analyzer

    Drop in a file, paste a link, or just type a song's name to get its key, BPM, and Camelot code.

    Try the analyzer

  • Mix songs on a timeline

    Put several songs side by side, drag one over the end of another for a beat switch, and export the mix. Waveforms, fades, live effects, all in the browser.

    Open the DAW

  • Song database & Camelot wheel

    Browse thousands of analyzed songs, or click through an interactive wheel to see what mixes with any key.

    Browse the database

  • MP3 cutter

    Trim a track down, add a fade in or out, and export it as an MP3 or WAV, good for ringtones.

    Open the cutter

  • Slowed + reverb

    Slow a track down, add one of five reverb types, and shape it with a draggable EQ.

    Open the studio

  • Loudness

    Measure a track's LUFS, see the penalty each streaming platform applies, and normalize it to a target.

    Check your loudness

  • Converters

    Convert video, audio, images, and PDFs between formats, all inside your browser.

    See the converters

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.

What is a Camelot code?

It's a short code, like 8A or 5B, that stands in for a song's musical key. Songs with neighboring or matching Camelot codes tend to mix cleanly, which is why DJs use the code instead of key names. Try the Camelot wheel

Can I analyze a whole playlist at once?

Yes. Paste a Spotify or YouTube playlist link and the playlist analyzer reads the key, BPM, and Camelot code for every track, then you can sort the whole thing into Camelot-wheel order. Open the playlist analyzer

Do I have to paste a link, or can I search by name?

You can just type the song's name. TuneBad looks it up, pulls a preview, and analyzes it the same way it would a pasted link.

How do I cut an MP3 for a ringtone?

Upload the track to the MP3 cutter, drag the start and end points to the part you want, add a fade in or out, and export it as an MP3 or WAV. Open the MP3 cutter

How do I get my track to the right loudness for Spotify?

Upload it to the loudness tool. It measures LUFS the same way Spotify does, shows how much the platform will turn your track down, and can normalize and export it at the target level. Check your loudness

How is TuneBad different from Tunebat?

Tunebat has a much bigger song database to search. TuneBad is free with no ads, analyzes any file or link you give it instead of only looking songs up, and recommends harmonic matches for whatever you analyze. See the full comparison

How do I mix two songs together, like a beat switch?

Put both on one timeline and let them overlap. In the TuneBad DAW you drop the songs in, drag the second one left until it sits over the end of the first, and both keep playing through the overlap, which is what a beat switch actually is. Crossfade shapes the handover, Match stretches a clip onto the project tempo if the two disagree, and the export is the mix you just heard. Open the DAW