Online Guitar Tuner
Real-time pitch detection through your microphone.
Tune your guitar online through your microphone. Artyphonic listens locally in the browser, detects the note you play, and shows whether the string is sharp, flat, or in tune. No upload, no account, no extra app.
Play a note
We'll detect the pitch through your microphone. Audio stays on your device — nothing is sent anywhere.
How it works
The tuner samples audio from your microphone, then runs ACF2+ autocorrelation to find the fundamental frequency. The detected frequency is compared to the nearest equal-tempered note (A4 = 440 Hz).
Reading the meter
- Within ±5¢ — in tune. The note tile glows green.
- ±5 to ±15¢ — close. Fine-tune carefully.
- Beyond ±15¢ — turn the peg. Flat = below center, sharp = above.
Privacy
Audio is analyzed locally via the Web Audio API. Your microphone stream never leaves the browser. Stop listening to release the mic.
Tips
- Play each string solo, not strummed.
- Pick near the bridge for a cleaner fundamental.
- Tune flat → up. Slipping pegs settle better that way.
- Quiet room helps. Background noise pulls the reading.
Frequently asked questions
- How does the online guitar tuner work?
- The tuner listens through your microphone, detects the frequency of the note you play, and shows whether the string is sharp, flat, or in tune on a cents meter. All audio is processed locally in your browser.
- Does the guitar tuner work without a microphone?
- A microphone is required to detect pitch. No recording is sent to any server — the audio is processed entirely in the browser.
- What are the standard guitar tuning notes?
- Standard guitar tuning from lowest to highest string is E2, A2, D3, G3, B3, E4. This is sometimes called EADGBE tuning.
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