🎸 Instrument Tuner

Intonation Adjustment Mode

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Pluck a string...

Strings

E2 · 82.4HzA2 · 110.0HzD3 · 146.8HzG3 · 196.0HzB3 · 246.9HzE4 · 329.6Hz

Reference Pitch (A4) — 440Hz

Standard is 440Hz. Adjust if necessary for specific tuning needs.

Instrument

Guitar — Standard (EADGBE)

Audio data is processed locally and never stored.

What Is Instrument Tuning?

Tuning is the process of adjusting the pitch of your instrument so that each string (or note) matches a specific frequency — the number of vibrations per second, measured in Hertz (Hz). A properly tuned instrument sounds harmonious on its own and blends correctly with other instruments.

🎵 The international standard reference pitch is A4 = 440 Hz. Every other note is tuned relative to this anchor.

Why Is Tuning So Important?

1. Ensemble Playing

Even small deviations in tuning become very noticeable when multiple instruments play together. Consistent tuning is the foundation of good ensemble sound.

2. Developing Relative Pitch

Tuning by ear trains your ability to hear and identify intervals — a skill that accelerates your musicianship in every area.

3. Instrument Longevity

Strings under the correct tension experience less stress. Consistently over-tightening strings shortens their lifespan.

Standard Tuning by Instrument

🎸 Guitar (6 strings)

E2 – A2 – D3 – G3 – B3 – E4

🎸 Bass Guitar (4 strings)

E1 – A1 – D2 – G2

🎵 Ukulele (4 strings)

G4 – C4 – E4 – A4

🎻 Violin (4 strings)

G3 – D4 – A4 – E5

Tips for Using the Browser Tuner

Use a good microphone: Built-in laptop mics can work, but an external mic or phone mic placed close to the instrument gives better accuracy.
Reduce background noise: Tune in a quiet environment — fans, AC, and traffic can interfere with pitch detection.
Pluck clearly: Let each string ring out fully. A muted or lightly plucked string is harder to detect.
Tune before every session: Temperature and humidity change string tension — always tune at the start of practice.

Frequently Asked Questions

Q. How accurate is the online tuner?

It analyses your microphone with the Web Audio API to within 1-5 cents — plenty for practice. For professional recording or live work, a hardware tuner is still recommended.

Q. Which instruments are supported?

Guitar (E2-A2-D3-G3-B3-E4), Bass (E1-A1-D2-G2), Ukulele (G4-C4-E4-A4), Violin (G3-D4-A4-E5), plus a chromatic mode for any pitch.

Q. Does it handle Drop D or open tunings?

Yes — Drop D, Drop C, Open G, DADGAD and other alternates are one-click presets, perfect for metal, blues, or folk.

Q. Why does the page need microphone permission?

To analyse the instrument signal. Everything runs locally in your browser; nothing is sent to a server and the mic releases when you close the page.

Q. What does "cents" mean?

One semitone equals 100 cents. ±5 cents is essentially in tune to the human ear; beyond ±10 cents starts to sound noticeably off.

Q. Why isn't tuning working in a noisy room?

Ambient noise hurts pitch detection. Tune in a quiet room, pluck strings firmly, and place a phone or external mic close to the instrument for better accuracy than a built-in laptop mic.

* Accuracy may vary depending on your device's microphone quality and ambient noise levels. For professional recordings, a dedicated hardware tuner is recommended.

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