Free Song Key & BPM Finder - Online Music Analyzer.

ODESA MUSIC - FREE PRODUCER TOOLS

FREE SONG KEY + BPM FINDER

Find the estimated musical key and tempo of your song in seconds. Completely free, with no annoying ads. Your audio stays on your device.

✓ Completely free✓ No annoying ads✓ No account required✓ No file uploads✓ Works on mobile

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Drop your audio file here or choose a file from your device

MP3, WAV, M4A, FLAC, OGG and more (format support depends on your browser) - Up to 100 MB

Preparing audio…0%

Estimated song key

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Estimated tempo

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Audio waveform

These are automatic estimates. Syncopation, dotted rhythms, half-time beats, key changes or unusual harmony can produce ambiguous results. Always check by ear or with your DAW.

🔒 Your music never leaves your device. This tool uses local browser audio processing; it does not send your file, waveform, or analysis to ODESA.

How to find a song's BPM

Choose an audio file and the analyser checks rhythmic peaks to estimate beats per minute (BPM). Useful when preparing DJ mixes, remixes, drum patterns or matching a project's tempo.

How to find a song's key

The analyser checks harmonic notes and bass frequencies across several parts of a song to estimate a possible major or minor key. Results are best treated as a starting point, especially for songs with modulations.

Make a lyric video for your track

Turn your music into an animated lyric video using ODESA's free browser-based creator.

Try the free lyric video maker →

Beta version - Feedback welcome

Is the key and BPM accurate?

This free analyser is currently in beta. Please leave a comment below to let us know if it works correctly for your songs. If a result is wrong, include the detected key/BPM and the correct values, so we can keep improving accuracy.

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Accuracy disclaimer: Song key and BPM results are automated estimates and may not always be correct, especially for songs with syncopation, dotted-beat rhythms, key changes or ambiguous harmonies. Please check results by ear or in your music software.