Guitar Tuner
Tune your guitar by ear with reference tones for E, A, D, G, B and E. Tap a string to hear its note, then match it — free, no app needed.
Tap a string to hear its reference tone, then tune your string to match it. Play the tone, listen, adjust, repeat.
How to tune by ear
Start with the low E string and work up. Play the reference tone, then pluck your string: if yours sounds lower, tighten the tuning peg; if higher, loosen it. When the two notes stop wobbling against each other — no beating sound — the string is in tune.
| String | Note | Frequency |
|---|---|---|
| 6th string — low E | E2 | 82.41 Hz |
| 5th string — A | A2 | 110.00 Hz |
| 4th string — D | D3 | 146.83 Hz |
| 3rd string — G | G3 | 196.00 Hz |
| 2nd string — B | B3 | 246.94 Hz |
| 1st string — high E | E4 | 329.63 Hz |
How it works: Standard guitar tuning is E2–A2–D3–G3–B3–E4. The intervals are perfect 4ths except G to B, which is a major 3rd — the quirk that makes guitar chord shapes what they are.
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