Online Guitar Tuner

Tune your guitar fast with an online tuner, hear reference tones, and start playing.

Lower pitchHigher pitchIn tune

Select tuning

Reference tones

Tap a note to hear the reference sound.

How to tune Guitar: online tuner and standard notes

This online Guitar tuner is built for the common how-to-tune question: choose a tuning, play one string, center the needle. Standard tuning notes are ready, and reference tones let you tune by ear when the mic is off. It runs entirely in your browser, so there is no app to install.

Guitar tuning steps

Choose a tuning. Standard tuning is preselected; switch only if a song calls for a different preset.
Start the microphone. Press Start and allow microphone access. Once it listens, the needle becomes active.
Play one string. Pluck a single string and let it ring for a steady reading. Mute the other strings for clarity.
Center the needle. When the needle centers and the tuner says In tune, that string is ready. Left means tune up, right means tune down.
Use reference tones. Tap a string button to hear the target pitch if you need it. You can also tune by ear without the mic.

What this tuner helps you do

Listens with your mic and shows the detected note plus tuning direction.
Starts on standard tuning notes and shows how far you are from the target.
Switches between alternate tunings instantly; target notes and reference tones update.
Plays clean reference tones for every string when you want to tune by ear.
Runs in your browser; audio stays on your device and no app is required.

Popular tuning options

Standard and alternate tunings are ready for your Guitar. Choose the tuning a song requires and the target notes plus reference tones update instantly, so you can move between styles without guessing. Highlights:

EADGBE (Standard), Drop D, Open G, Open D, DADGAD, Drop C

Reference tones for quick checks

Each string button plays the target note, and the tones update when you change tuning. If the microphone is unavailable, you can still tune by ear with these tones in a quiet room.

Standard tuning open-string notes

Open-string notes for guitar standard tuning.
String	Open-string note
String 1	E2
String 2	A2
String 3	D3
String 4	G3
String 5	B3
String 6	E4

Tips for a steadier Guitar tune

Confirm the tuning preset first; the target notes change with each option.
Pluck one string at a time and mute the others for a clean read.
Keep the mic close to the instrument and reduce background noise.
Recheck every string once more; small changes can affect the others.
Make the final adjustment by tightening up to the target note; tuning down slips faster.

Guitar tuning FAQ

Do I need to install an app?

No. The tuner runs in your browser and starts as soon as you grant microphone access. You can also use the reference tones if you prefer to tune by ear.

Why does the needle move?

Pitch naturally wobbles as a string settles, so the needle can drift. Pluck one string at a time and wait a few seconds for a steadier reading.

Which tuning should I choose?

Use Standard unless a song calls for a different tuning. When you select another preset, the target notes and reference tones update immediately.

Can I tune without a microphone?

Yes. Tap the reference tones and match the pitch by ear, which is helpful if mic permissions are blocked. A quiet room makes this method faster and more accurate.

Does the microphone work in every browser?

Most modern browsers support Web Audio, but settings or permissions can block mic access. If the mic is unavailable, keep tuning with the reference tones instead.

Is my audio uploaded?

No. Listening and pitch analysis happen locally on your device. Audio is not stored or sent to a server.