Instrument Tuner
Tune your instrument with precision using your microphone
Frequency: — Hz
| Note | Frequency (Hz) |
|---|---|
| C4 | 261.63 |
| D4 | 293.66 |
| E4 | 329.63 |
| F4 | 349.23 |
| G4 | 392.00 |
| A4 | 440.00 |
| B4 | 493.88 |
使用方法
打开工具
无需设置——工具在浏览器中即时加载。
互动与探索
使用鼠标、键盘或触控即时互动。
随时随地使用
桌面与移动设备皆可使用——随时随地练习或创作。
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。
How Digital Instrument Tuners Work
Key Takeaways
- Chromatic tuners detect pitch by analyzing audio frequency using Fast Fourier Transform (FFT) algorithms.
- Standard concert pitch is A4 = 440 Hz, though some orchestras tune slightly higher (441–443 Hz).
- Browser-based tuners use the Web Audio API to access your microphone and process audio in real time.
A digital instrument tuner listens to the sound your instrument produces, identifies the closest musical note, and shows how sharp or flat you are. Modern browser-based tuners leverage the Web Audio API to perform real-time pitch detection directly on your device, with no software installation required.
±1 cent
Tuning accuracy
Common Use Cases
Guitar & Bass Tuning
Quickly tune all six strings to standard (EADGBE) or alternate tunings like Drop D, Open G, or DADGAD before practice or performance.
Orchestral Warm-Up
Tune woodwind, brass, and string instruments to concert pitch A440 during ensemble warm-up without carrying a separate tuning device.
Ukulele & Mandolin
Tune less common stringed instruments accurately using a chromatic tuner that detects any pitch rather than only preset string notes.
Vocal Pitch Training
Singers can use a visual tuner as feedback to practice hitting and sustaining accurate pitches during vocal exercises.
Tips for Accurate Tuning
Tune in a quiet environment — background noise can confuse pitch detection and produce unreliable readings.
Play a single note clearly and let it sustain. Avoid strumming multiple strings simultaneously.
Tune up to pitch rather than down. If sharp, loosen below the target and tune upward for better stability.
Allow your microphone a moment to initialize. Some browsers require you to grant permission before the tuner can start.
This tuner processes all audio directly in your browser using the Web Audio API. No audio data is recorded, stored, or sent to any server. Microphone access is used solely for real-time pitch detection.