Hears the low E properly
Most browser tuners octave-jump on a wound low E. This one uses McLeod pitch tracking, so 82 Hz reads as 82 Hz.
Guitar Tuner · in your browser · nothing to install
Tune up
in six strings
A proper chromatic tuner that runs in the tab you already have open. Allow the microphone, pluck the low E, and it walks you down the strings until all six are in tune. No app, no account, no audio ever leaves your device.
Mic off
♭ flatsharp ♯
E2— — —target 82.41 Hz
Press start and play the low E string.
Standard · E A D G B E — pick a string to jump to it, or just play and let the tuner walk you down the neck.
±1¢needle resolution
6strings, guided in order
4tunings built in
0bytes of audio uploaded
Features
Simple on the surface, solid underneath
Guides you string by string
It starts on the low E and works down the strings — but play any string and it jumps straight to that one. Hold it in tune for a second and it moves on by itself.
Accurate to the cent
Parabolic interpolation on the detected period, so the needle settles on ±1 cent instead of twitching around.
A reference note when you want it
Tap the pitch pipe to hear the target string. Handy when your ear is quicker than the needle.
Drop D and friends
Standard, Drop D, half step down and open G. Pick a tuning and the whole flow retargets.
Nothing leaves the browser
The microphone stream is analysed on your device and never recorded, uploaded or stored. No account, no cookies.
How to tune
Six strings, two minutes
- Allow the microphone. The tuner asks once. Nothing is recorded — the stream is analysed frame by frame and thrown away.
- Start on the low E. Pluck it open, let it ring, and watch the needle. Left of centre is flat: tighten. Right is sharp: loosen. Play a different string at any point and the tuner follows you to it.
- Come up to pitch, never down. If you overshoot, drop below the note and tighten back up. Tuning pegs hold better that way.
- Hold it steady. A second inside four cents and the string is ticked off — the tuner moves down to the A by itself.
- Go round twice. Tightening one string pulls slightly on the neck, so the first strings drift. A second pass settles everything.
— Quiet room, fresh strings, and it takes no time at all
Good to know
The fine print
Why does it need a microphone?
It listens to the string and measures how fast it vibrates. That is the whole trick. Browsers only hand out a microphone on a secure page, and only after you say yes.
Does it work on a phone?
Yes — iOS Safari and Android Chrome both do. Keep the phone within a metre of the guitar and it will hear the low E without trouble.
Will it tune a bass or a ukulele?
A ukulele is well inside its range. A bass is not — the needle tracks from 60 Hz up, and a four-string bass keeps its two lowest strings below that. This one is built for six-string guitar.
Is anything stored?
No. No recording, no upload, no account, no cookies from the tuner. Close the tab and the microphone stream is gone with it.