VCM BPM Finder
Upload audio and get the most likely BPM plus half-time and double-time options.
Processed entirely in-browser. No audio is stored.
What is BPM and Why Does It Matter?
BPM (Beats Per Minute) is the universal way to measure musical tempo. Whether you're a producer syncing samples, a DJ matching tracks, or a musician practicing to a metronome, knowing the exact BPM of your audio is essential.
VCM BPM Finder analyzes rhythmic energy patterns in your audio to detect the most likely tempo. Because music can be felt at different speeds (half-time, double-time), we also show alternate interpretations so you can choose what fits your workflow.
The confidence score tells you how clear the beat pattern is. Drums and full mixes typically show High confidence, while ambient or vocal-only tracks may show Medium or Low confidence due to their less defined rhythmic structure.
How It Works
Upload Audio
Drop in a WAV, MP3, or M4A file. The audio loads directly into your browser.
Analyze Rhythm
We detect repeating beat intervals by analyzing energy patterns and onset timing.
Get Results
See the primary BPM, confidence level, and alternate tempo interpretations.
Features
Accurate BPM Detection
Onset and autocorrelation analysis for reliable tempo detection
Alternate Tempo Options
See half-time and double-time interpretations
Confidence Scoring
Know how certain the detection is (High/Medium/Low)
Works on Various Audio
Beats, songs, instrumentals, and more
Fast Browser Processing
Analysis happens in seconds, right in your browser
Privacy-First
No uploads stored—your audio never leaves your device
WAV/MP3/M4A Support
All common audio formats are supported
Mobile-Friendly
Works on phones and tablets with modern browsers
Honest Limitations
Vocal-only audio
May be more ambiguous due to lack of steady beat
Live recordings
Can be noisy and may reduce detection accuracy
Short clips
Clips under 8 seconds automatically show Low confidence
Complex rhythms
Polyrhythmic or tempo-changing music may show multiple candidates
Frequently Asked Questions
What is BPM?
BPM stands for Beats Per Minute. It measures the tempo or speed of music. A higher BPM means faster music, while a lower BPM means slower music. Most pop songs are between 100-130 BPM.
How accurate is this BPM finder?
VCM BPM Finder uses onset detection and autocorrelation analysis to detect tempo. Accuracy is highest for audio with clear rhythmic content like drums or full mixes. The confidence indicator shows how certain the detection is.
Why do I see half-time and double-time BPMs?
Music tempo can be interpreted in multiple ways. A song at 70 BPM could also be counted at 140 BPM if you count twice as fast. We show both options so you can pick what feels right for your use case.
Does this work on vocals only?
Vocal-only audio is more challenging because there's no steady beat. The tool will still attempt detection, but confidence may be lower. For best results, use audio with rhythmic content.
What file types are supported?
VCM BPM Finder supports WAV, MP3, and M4A files. Any audio format your browser can decode will work.
Do you store my audio?
No. All processing happens directly in your browser using the Web Audio API. Your files are never uploaded to any server.
Why does the BPM sometimes feel wrong?
BPM detection can be ambiguous. Some songs have complex rhythms or tempo changes. If the primary BPM feels off, try the half-time or double-time alternatives, or check the other candidates listed.
How do I use BPM in a DAW?
Once you know the BPM, set your DAW project tempo to match. This ensures your loops, samples, and effects sync correctly with the audio. Most DAWs have a tempo field in the transport bar.
What BPM range is supported?
The detector primarily looks for tempos between 60-200 BPM. Results outside this range are normalized by halving or doubling. Very slow or very fast tempos may be shown as alternatives.
Can I analyze short clips?
Yes, but accuracy decreases with shorter audio. Clips under 8 seconds will show Low confidence. For best results, use at least 15-30 seconds of audio.
Processed entirely in-browser. No audio is stored.
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