Question 1

Is this guitar tuner free?

Accepted Answer

Yes, and every feature on this online guitar tuner stays free: automatic microphone tuning, all 18 named tunings, the custom tuning builder, 7-string and 12-string presets, and adjustable calibration. Fender's own web tuner keeps automatic tuning locked behind its app and an email signup for "Tune Plus." Nothing here is held back like that.

Question 2

How do I tune my guitar with this tool?

Accepted Answer

Click "Start microphone" and allow microphone access, then play one string at a time. That's all it takes to tune guitar online, with no download and no setup screen first. The tuner names the note you played, shows how many cents sharp or flat it is, and the needle centers and turns green once it's in tune.

Question 3

Does this guitar tuner use my microphone, and is my audio uploaded anywhere?

Accepted Answer

It uses your microphone, yes, because that's how automatic tuning works, but the audio never leaves your device. Pitch detection runs entirely in your browser through the Web Audio API, and this tool doesn't have a server to upload anything to in the first place.

Question 4

Why does my browser say microphone access is blocked?

Accepted Answer

Your browser is blocking this page's microphone access. On mobile, and in Safari or Firefox, there's no microphone icon in the address bar the way there is in desktop Chrome. Look for a site info or Shields icon next to the address bar instead, or check your browser's privacy/site settings. Allow microphone access there, then click "Start microphone" again.

Question 5

Is this a chromatic tuner?

Accepted Answer

Yes, this chromatic tuner online identifies whatever note you play, not just the strings in the current tuning, so it works above the 12th fret, on a badly out-of-tune string, or on any other instrument you point a microphone at.

Question 6

What alternate tunings does this guitar tuner support?

Accepted Answer

18 named tunings for 6-string guitar, so this doubles as a drop d tuner, a dadgad tuner, and an open g tuning reference, among others: Standard, Drop D, Double Drop D, Drop C♯, Drop C, Drop B, Drop A, DADGAD, half step down, full step down, half step up, all six open tunings (A, C, D, E, F, G), and Nashville. Pick one from the Tuning dropdown and the string buttons update to its targets immediately.

Question 7

Can I create a custom tuning?

Accepted Answer

Yes, this works as a custom guitar tuning builder and a fully custom tuner: choose "Custom…" in the Tuning dropdown and set any note and octave for any number of strings, from 1 up to 12. Only one of the five competitor tuners checked for this tool offers that at all.

Question 8

Does this work for 7-string or 12-string guitars?

Accepted Answer

Yes, this doubles as a 7 string guitar tuner and a 12 string guitar tuner. Switch Instrument to 7-String for standard or drop A tuning, or to 12-String for standard or drop D. Each course's octave string is listed as its own target, so a 12-string's higher-octave strings tune correctly instead of getting mistaken for their fundamental partner.

Question 9

Can I tune my guitar without a microphone?

Accepted Answer

Yes. Tap the play icon next to any string to hear its reference pitch and tune by ear, a genuine guitar tuner no mic option, since it needs no microphone permission at all. It's exactly how you'd tune guitar without microphone access, the same mode Fender's entire free web tuner relies on, available here alongside full automatic tuning rather than in place of it.

Question 10

What reference pitch does this tuner use, and can I change it?

Accepted Answer

Most people search for this as a guitar tuner 440hz or a 432 hz tuner, but it's really one tuner calibration control. It defaults to A4 = 440 Hz, standard concert pitch, and the slider adjusts anywhere from 415 to 466 Hz: 432 Hz, 442 Hz for an orchestra, or a historical 415 Hz baroque pitch, take your pick. Every target frequency and reference tone updates immediately, a control none of the five competitor tuners checked for this tool expose at all.

Question 11

Does this work for both acoustic and electric guitar?

Accepted Answer

Yes, with no separate mode to pick. Pitch detection reads whatever your microphone picks up, whether that's an acoustic guitar's soundhole or an electric plugged into an amp within mic range. There's nothing to switch.

Question 12

How often should I tune my guitar?

Accepted Answer

Check before every practice session or performance. Strings drift from normal playing, temperature swings, and string stretch: new strings especially can take a few days of playing before they stop slipping. Left a guitar unplayed for a while? Check it again before you pick it back up.

Question 13

Does this work on mobile?

Accepted Answer

Yes. Automatic tuning, every tuning preset, the custom builder, reference tones, and calibration all work on any modern mobile browser with microphone access, same as on desktop.

Guitar Tuner

Frequently asked questions