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MP3 · WAV · OGG · FLAC · M4A · AAC · WebMNeed to know the BPM of a track before mixing, remixing, or syncing it to video? Flipper File's BPM Detector analyzes any audio file directly in your browser and gives you the beats-per-minute in seconds — no upload, no account, no waiting. Works with MP3, WAV, OGG, FLAC, M4A, and more.
How to Detect BPM Online
- Click Choose Audio File and select any MP3, WAV, OGG, FLAC, or M4A file from your device.
- The tool will analyze the audio's rhythmic content using your browser's Web Audio API.
- Your detected BPM will appear instantly — along with a confidence indicator.
- Use the Tap Tempo pad to manually verify or cross-check by tapping along to the beat.
- Copy the BPM value or use it directly in your DJ software, DAW, or video editor.
Why Use Flipper File to Detect BPM?
- 100% private — no upload required. Audio is analyzed locally in your browser. Your files never touch our servers.
- Instant results. BPM detection runs in seconds using the Web Audio API — no waiting for uploads or processing queues.
- Works with all major formats. MP3, WAV, OGG, FLAC, M4A, AAC, and any format your browser can decode.
- Tap Tempo included. Manually tap along to the beat for a second opinion or to verify the detected BPM.
- Completely free. No account, no watermark, no paid tier — just results.
- Works on any device. Fully responsive — use it on your phone, tablet, or desktop.
Frequently Asked Questions
What is BPM?
BPM stands for beats per minute. It measures the tempo of a piece of music — how many rhythmic pulses (beats) occur each minute. A slow ballad might be 60–80 BPM; a dance track might be 128–140 BPM; drum and bass can hit 170+ BPM.
How does this BPM detector work?
The tool uses the browser's built-in Web Audio API to decode your audio file and analyze its rhythmic transients. It applies an onset detection algorithm to identify beats, then calculates the average interval between them to determine BPM. All processing happens client-side — nothing is uploaded.
Does it work with any file format?
It works with any audio format your browser can natively decode: MP3, WAV, OGG, FLAC (in most browsers), M4A, AAC, and WebM. If your browser can play the file, this tool can analyze it.
How accurate is it?
Accuracy depends on the clarity and regularity of the beat. Electronic and pop music with strong, consistent kick drums will give near-perfect results. Acoustic music, jazz, or tracks with tempo changes may show slight variation. The Tap Tempo feature is included as a quick manual cross-check.
Can I detect BPM without uploading my file?
Yes — that's a core feature. All audio analysis runs entirely in your browser using the Web Audio API. Your file is never sent to any server.
What if the detected BPM looks wrong?
If the result seems off, try the Tap Tempo button — tap along to the beat of the track as it plays, and the tool will calculate your manual BPM. Some tools also detect at half or double the true BPM; if the number looks exactly half or double what you expect, that's likely why.
Can I use this to match tracks for DJing or remixing?
Absolutely. Knowing the exact BPM of your tracks is essential for beatmatching in DJ software or syncing loops in your DAW. Detecting BPM first lets you set the correct project tempo in tools like Ableton Live, FL Studio, or Logic Pro.
Is this tool free?
Yes, completely free. No subscription, no login, no upload limit.