Standard Guitar Tuner targets: E2 A2 D3 G3 B3 E4
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Tune a six-string guitar to standard E A D G B E with a browser tuner that identifies the intended string and processes microphone audio entirely on your device.
Standard tuning is the baseline for most guitar lessons, chord charts, scale diagrams, and recordings. It balances familiar chord shapes with a useful low range, so it is the right place to begin unless a song or arrangement explicitly calls for another setup.
Use the string gauge recommended for your guitar's scale length and setup. A typical light or medium set should feel balanced in standard tuning. After installing new strings, stretch them gently and make several tuning passes because fresh strings continue to settle around the bridge and tuner posts.
Approach every target from below. If a string is sharp, lower it slightly past the note and then tune upward; this helps remove slack around the tuner post and nut.
The fifth fret of the low E should match the open A. Continue with fifth-fret A to open D, fifth-fret D to open G, fourth-fret G to open B, and fifth-fret B to open high E. These comparisons are a useful final check after the browser tuner has brought every string close.
Most neighboring strings are a perfect fourth apart, with a major third between G and B. That one interval shift is what makes familiar open chords, barre chords, and scale patterns fall under the fingers the way standard guitar methods show them.
TuneToy analyzes microphone audio locally in this browser. Your playing is not recorded, uploaded, or stored.