BPM 检测器
自动检测任何音频文件的节拍速度（BPM）
上传音频文件
支持 MP3、WAV、OGG、FLAC、AAC、M4A
使用方法
上传您的文件
拖放文件或点击浏览。您的文件留在浏览器中。
调整设置
配置选项以获得您所需的精确结果。
下载结果
即时处理并下载您的文件——无需等待，无需上传至服务器。
为什么使用此工具
100% 免费
没有隐藏费用，没有付费等级——所有功能完全免费。
无需安装
完全在浏览器中运行。无需下载或安装任何软件。
隐私且安全
您的数据永远不会离开您的设备。不会上传至任何服务器。
支持移动设备
完全响应式设计——在手机、平板或桌面电脑上均可使用。
您的文件保持私密
此工具完全在您的浏览器中处理文件。不会上传至任何服务器——您的数据永远不会离开您的设备。
- 无服务器上传——100% 客户端处理
- 不存储数据——关闭标签页时文件即被丢弃
- 无需账号——无需注册即可立即使用
How BPM Detection Algorithms Work
Key Takeaways
- BPM detection analyzes periodic energy peaks in an audio signal to estimate tempo.
- Common algorithms use onset detection, autocorrelation, or spectral flux to identify rhythmic patterns.
- Accuracy depends on rhythmic clarity — strong percussive elements yield the most reliable readings.
Knowing the tempo of a song is essential for DJs, producers, and musicians. BPM detection algorithms analyze the audio waveform to identify recurring rhythmic patterns and calculate the tempo. This browser-based tool processes your audio files locally to detect BPM without uploading anything to a server.
60–180
Typical BPM range in music
Common Use Cases
DJ Set Preparation
Determine the BPM of tracks in your library to plan smooth transitions and beatmatching between songs during a set.
Music Production Sync
Find the exact BPM of a sample or reference track to set your DAW project tempo for remixing or sampling.
Workout Playlist Curation
Sort music by BPM for workout playlists — 120 BPM for jogging, 140+ BPM for high-intensity intervals.
Practice Along With Recordings
Detect a song's BPM, then set your metronome to that tempo for practice sessions.
BPM Detection Tips
Songs with clear, consistent drums produce the most accurate readings. Ambient or rubato music may give unreliable results.
If detected BPM seems half or double the expected value, the algorithm may have locked onto half-time or double-time feel.
For live recordings with tempo variation, the detected BPM is an average — individual sections may differ.
Analyze at least 15–30 seconds of audio for reliable detection. Very short clips may lack enough rhythmic information.
All BPM analysis is performed entirely in your browser. Your audio files are processed locally and never uploaded to any server.