BPM Detector

About BPM Detector

This online BPM detector automatically analyzes your audio files to find the tempo in beats per minute (BPM). Perfect for DJs, musicians, dancers, and music producers who need to know the exact tempo of their tracks. The tool also includes a manual tap tempo feature for quick BPM counting.

What audio formats are supported?

All common audio formats are supported including MP3, WAV, OGG, AAC, M4A, FLAC, OPUS, and more.

What is BPM?

BPM stands for Beats Per Minute. It's a measure of tempo (speed) in music, indicating how many beats occur in one minute. For example, 120 BPM means there are 120 beats in one minute, or 2 beats per second. Higher BPM means faster tempo.

How accurate is the BPM detection?

The detector uses advanced beat detection algorithms and is generally accurate for most music with clear, steady beats. However, accuracy can vary depending on the music type. Songs with very complex rhythms, ambient music, or classical pieces without steady beats may be harder to analyze accurately.

What are Alternative BPMs?

Many songs can be perceived at different tempos. For example, a song at 140 BPM can also be felt at 70 BPM (half-time) or 280 BPM (double-time). The tool shows these alternative interpretations to help you find the tempo that feels right for your use case.

What are the tempo categories?

Music tempos are traditionally classified as: Largo (very slow, 40-60 BPM), Adagio (slow, 66-76 BPM), Andante (walking pace, 76-108 BPM), Moderato (moderate, 108-120 BPM), Allegro (fast, 120-168 BPM), Presto (very fast, 168-200 BPM), and Prestissimo (extremely fast, over 200 BPM).

How does tap tempo work?

Tap tempo lets you manually calculate BPM by tapping a button in rhythm with the music. Tap at least 2-3 times in sync with the beat, and the tool will calculate the average BPM. Keep tapping for more accuracy. This is useful for songs where automatic detection doesn't work well, or for quick BPM checks.

What does the metronome feature do?

The 'Play with Metronome' feature plays your audio while showing visual beat indicators synchronized to the detected BPM. This helps you verify if the detected tempo matches the actual song tempo. The beat indicators pulse on each beat and highlight in the beat grid.

What is the beat visualization?

The beat grid shows the first 32 beats (8 measures) of your song. Strong beats (downbeats) are shown taller and in red. When playing with metronome, the current beat is highlighted. This gives you a visual representation of the song's rhythm.

Why is my detection result wrong?

Detection can be tricky for: 1) Songs with very subtle or complex rhythms, 2) Music without steady beats (ambient, freeform jazz, classical), 3) Very slow or very fast tempos, 4) Songs with tempo changes. Try using tap tempo for these cases, or check the alternative BPMs which might have the correct tempo.

What BPM ranges are common for different music genres?

Typical BPM ranges: Hip-hop (85-115 BPM), House (120-130 BPM), Techno (120-150 BPM), Drum & Bass (160-180 BPM), Dubstep (140 BPM, but feels like 70), Trance (125-150 BPM), Rock/Pop (100-130 BPM), Reggae (60-90 BPM), Jazz (120-180+ BPM varies widely).

Can I use this for DJ mixing?

Yes! Knowing the BPM of your tracks is essential for DJ mixing. The BPM detector helps you find tracks with compatible tempos for smooth transitions and beat matching. Many DJs use BPM to organize their music libraries.

Is my audio file safe?

Absolutely! All audio analysis happens directly in your browser using Web Audio API. Your audio file is never uploaded to any server. Everything stays private on your device.