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Audio BPM Detector

Detect the beats per minute (BPM) of a music track

Downmixes to mono, analyzes a short window, and estimates tempo using beat tracking.

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Key Facts

Category
Media
Input Types
file, text
Output Type
json
Sample Coverage
4
API Ready
Yes

Overview

The Audio BPM Detector calculates the beats per minute (BPM) of music tracks by analyzing audio segments. It downmixes audio to mono, examines a specified window, and uses beat tracking to estimate tempo, providing results in JSON format.

When to Use

  • •When you need to quickly determine the tempo of a song for DJ mixing or beatmatching.
  • •When organizing a music library by BPM to create playlists with consistent energy levels.
  • •When analyzing audio tracks for music production to align tempos in compositions or remixes.

How It Works

  • •Upload an audio file in a supported format, such as MP3 or WAV.
  • •Optionally specify the analysis duration in seconds; the default is 60 seconds.
  • •The tool converts the audio to mono and analyzes a segment for beat patterns.
  • •It estimates the BPM using beat tracking algorithms and outputs the result as JSON.

Use Cases

DJs matching song tempos for seamless transitions during live performances.
Music producers analyzing reference tracks to set project tempos in digital audio workstations.
Fitness instructors creating workout playlists with consistent BPM for rhythm-based exercises.

Examples

1. Quick BPM Check for DJ Mixing

DJ
Background
A DJ is preparing a set and needs to know the BPM of several tracks to ensure smooth beatmatching.
Problem
Manually tapping BPM is slow and prone to errors, risking poor transitions.
How to Use
Upload each audio file and use the default analysis to get instant BPM readings.
Outcome
The tool returns the BPM for each track, allowing the DJ to sort and mix songs effectively.

2. Tempo Analysis for Music Production

Music Producer
Background
A producer is remixing a song and must match the original track's tempo in their project.
Problem
Without precise BPM, aligning beats in the software is difficult and time-consuming.
How to Use
Upload the original audio file and set the analysis seconds to cover a key section, such as the chorus.
Example Config
analysisSeconds: 120
Outcome
The BPM is detected accurately, enabling the producer to set the project tempo and sync elements.

Try with Samples

audio, file
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
title token audio
audio
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token audio
audio
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio
Copyright-Free OGG Vorbis Audio Samples
Open-source OGG Vorbis audio samples for testing and development, featuring excellent compression with nature sounds and meditation music
title token audio
audio

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FAQ

What audio formats are supported?

The tool supports common audio formats like MP3, WAV, AAC, and others under the audio/* category.

How accurate is the BPM detection?

Accuracy varies with audio quality and beat clarity, but it uses standard beat tracking for reliable estimates.

Can I analyze the entire audio track?

Yes, by setting the analysis seconds to the track length or a higher value, though the default is 60 seconds for efficiency.

Is there a file size limit?

Yes, the audio file must be under 200 MB as per the file limit.

What does the output look like?

The result is a JSON object containing the estimated BPM value.

API Documentation

Request Endpoint

POST /en/api/tools/audio-bpm-detector

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
analysisSeconds text No -

File type parameters need to be uploaded first via POST /upload/audio-bpm-detector to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
JSON Data: JSON Data

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-audio-bpm-detector": {
      "name": "audio-bpm-detector",
      "description": "Detect the beats per minute (BPM) of a music track",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-bpm-detector",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]