AudioBento

BPM and Key Finder

Use this music tempo finder to estimate BPM, key, and Camelot code. Analyze a song in your browser, then listen and explore compatible keys.

Related Audio Tools

Online Voice RecorderRecord your voice and download it in six audio formats.BPM and Key FinderFind song BPM, musical key, and Camelot code.

How to Use the BPM Key Finder

  1. 1

    Choose a song or beat

    Select a supported audio file or drag it into the tool. Analysis starts automatically, with no audio sent to a server.

  2. 2

    Find tempo and key

    The key detector estimates the tonic and mode while the tempo BPM finder analyzes the beat. Results appear automatically.

  3. 3

    Listen and compare

    Review BPM, key, and Camelot code alongside half-time and double-time values. Play the track to check your mixing choices.

Tempo and Key Finder for DJs and Musicians

Use this key BPM finder to prepare a DJ set, check a demo, or choose a starting key for vocal tuning.

01

Find Song Tempo for Beat Matching

Use the BPM finder online to estimate beats per minute from your audio. Compare half-time and double-time values before mixing.

  • Automatic estimate
  • Whole-number BPM
  • Half and double tempo

Example · not your analysis

90BPM
Half Tempo
45 BPM
Double Tempo
180 BPM
02

Find the Key of a Song or Beat

The audio key finder estimates the tonic and major or minor mode. Use the result as a starting point for mixing, practice, or Auto-Tune settings.

  • Full key label
  • Major or minor
  • Unknown for inconclusive results

Example · not your analysis

B♭ Major

Major or minor

Unknown

03

Compare Tracks with Camelot Codes

See the track key as a Camelot code, then explore nearby keys for harmonic mixing. Listen to both songs before choosing a transition.

  • Automatic key mapping
  • Compatible keys
  • Harmonic mixing context

Example · not your analysis

6BB♭ Major

Compatible Keys

  • 5BE♭ Major
  • 7BF Major
  • 6AG Minor
04

Check Estimates Against What You Hear

Listen to the original track alongside its tempo and key estimates. Seek to different passages to check whether the musical feel changes. One estimate may not describe every section of a song.

  • Seek to different passages on the waveform.
  • Compare the audible pulse with the tempo reference.
  • Treat Unknown or changing musical sections with care.

Example · not your analysis

Original audio

00:32 / 03:45
90 BPMB♭ Major

Listen across passages · estimates can vary with the music

BPM and Key Finder FAQ

How does this song key and BPM finder work?
Choose a supported local audio file. The tool samples sections of the recording to estimate its tempo and musical key automatically. Results come from audio analysis in your browser, not verified metadata supplied by the artist. No manual beat tapping is needed.
How accurate is the BPM finder?
BPM is an estimate. Syncopation, weak beats, tempo changes, and live recordings can make detection ambiguous. A track at 90 BPM may also feel natural at 45 or 180 BPM. Half-time and double-time values are calculated references; check the beat by ear before mixing.
How do Camelot codes and compatible keys help with mixing?
Camelot pairs a number with A for minor or B for major. Suggested keys are adjacent numbers with the same letter, plus the other letter at the same number. These are mixing references; listen to each track because matching codes do not guarantee a smooth transition.
Can this key finder help with Auto-Tune settings?
Use the estimated song key and major or minor mode as a starting point when setting Auto-Tune or other vocal tuning software. Check the result by ear before applying it. This tool does not correct pitch or detect every individual note in a vocal.
Can I find BPM from YouTube, Spotify, or SoundCloud?
This tool analyzes local audio files, so YouTube, Spotify, and SoundCloud links are not supported. Choose a song or beat saved on your device to estimate its BPM and key. It does not download streaming audio, identify song titles, or search songs by BPM.
Why are BPM or Key sometimes Unknown?
The detector needs consistent rhythm or tonal evidence. Short clips, noise, complex arrangements, or an unclear major or minor mode can leave the result inconclusive. Unknown means the analysis could not support a reliable estimate; it is not a guessed key or tempo.
Can I find the BPM and key of an MP3 file?
Yes. Choose MP3, WAV, M4A, FLAC, OGG, AAC audio with 1–2 channels at 8–48 kHz. The BPM and key detector reads the file locally. Analysis also depends on the encoding and your browser’s decoder, so a file that plays normally may still be unavailable for analysis. Some browsers require compatibility processing, which is limited to 12 MiB and 6 minutes and may stop at lower limits to protect device memory.
Is this a free alternative to the Tunebat analyzer?
This independent online tempo finder also estimates song key and Camelot code. It is not affiliated with the Tunebat key finder. No signup is needed, and audio stays in your browser. Analytics and error reports do not include your file or its name.

Find Key and BPM for Your Song

Drop in an MP3 or another supported audio file. Use the free tempo finder to plan your next mix or practice session.