Tune a 6-string acoustic or electric guitar with live microphone feedback, visual string targets, alternate tunings, and an adjustable A4 reference pitch.
A guitar tuner compares each open string with its target pitch and shows whether the string is flat, sharp, or in tune. Standard 6-string tuning is E-A-D-G-B-E from the lowest string to the highest.
The target setup on this page is E2 - A2 - D3 - G3 - B3 - E4.
Pitch analysis runs continuously in the browser and displays the nearest target, frequency, and cents difference.
The tuner shows whether the current note needs to move up, move down, or is within the in-tune range.
Select a visible target to hear a clean reference pitch when you want to compare the instrument by ear.
Microphone samples are analyzed locally and are not uploaded as an audio recording.
Tune in a quiet room and play only one clear note or open string at a time.
Start with E2 - A2 - D3 - G3 - B3 - E4. Available alternatives include Drop D, Drop C, D Standard, half step down, open tunings, and modal tunings.
Allow microphone access, keep the instrument close enough for a clean signal, and avoid other sustained sounds.
Play one open string and let it sustain while the tuner selects or follows its target.
Move gradually toward the center, then repeat every target because changing one string can slightly affect the others.
Use the dedicated preset when the target notes and physical string order matter more than a general chromatic reading.
Check all six strings before scales, chords, recording, rehearsal, or a lesson.
Use a device microphone for acoustic guitar or place an unplugged electric guitar close to the microphone.
Switch from Standard to Drop D, Drop C, Open G, Open D, D Standard, and other included presets.
Adjust A4 from 430 Hz to 450 Hz when an ensemble, recording, or instrument uses a reference other than 440 Hz.
Both use the same pitch detector, but they organize targets differently.
| Guitar Tuner preset | Chromatic mode | |
|---|---|---|
| Targets | E2 - A2 - D3 - G3 - B3 - E4 | All twelve semitones |
| Visual layout | Instrument-specific pegs and strings | Detected note and cents |
| Best for | Guitar Tuner | Custom tunings and other pitched instruments |
| Tuning choice | Drop D, Drop C, D Standard, half step down, open tunings, and modal tunings | No instrument tuning required |
A dedicated preset is easier when you want the correct string order. Chromatic mode is more flexible when you already know the target note.
Yes. It runs in a supported browser without requiring an account or installing a tuning app.
The default targets are E2 - A2 - D3 - G3 - B3 - E4.
Yes. Allow microphone permission, keep the device near the instrument, and play in a quiet place for a more stable reading.
One semitone contains 100 cents. A negative reading is flat, a positive reading is sharp, and a value close to zero is in tune.
Other strings, room noise, overtones, and a hard attack can compete with the fundamental. Mute unused strings and read the note after it settles.
No. Live microphone analysis stays in the browser and the tuner does not create or upload an audio recording.
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