Updated September 28, 2026

Drop D Tuner

Tune your guitar to drop D (D A D G B E) with your device's microphone.

Tunes with your device's microphone. Nothing is recorded or uploaded.

Settings

Reference pitch (A4)

440 Hz432 Hz442 Hz415 Hz

How to Tune to Drop D

Tune the other five strings to standard first: A, D, G, B, and E.
Tap the D2 button to lock the tuner to the low string, then loosen that string while it rings. It drops a whole step, 200 cents, from E2 to D2.
Stop when the tuner shows In tune. As a check, the low D should sound one octave below the open D string.

Tune up to each note rather than down to it. If you go past, loosen the string below the note and come back up: the string holds its pitch better that way.

String Notes and Frequencies

At the standard reference pitch, A4 = 440 Hz. String 1 is the highest-pitched string.

String	Note	Frequency
6	D2	73.42 Hz
5	A2	110.00 Hz
4	D3	146.83 Hz
3	G3	196.00 Hz
2	B3	246.94 Hz
1	E4	329.63 Hz

Questions

What is drop D tuning?+

Standard tuning with the lowest string lowered a whole step, from E to D. The notes are D2, A2, D3, G3, B3, and E4. It gives a deeper low end and lets you play power chords on the bottom three strings with one finger.

Does my guitar need adjusting for drop D?+

Usually not. Lowering one string by a whole step loosens it a little, which most guitars handle fine. If the low string buzzes, pluck it more softly or use a heavier string.

How do I go back to standard tuning?+

Tighten the low string until the tuner shows E2 in tune, or use the guitar tuner page.

How do I tune to drop D without a tuner?+

Lower the low E string until the note at its 7th fret matches the open A string. You can also match the harmonic at its 12th fret to the open D string. For a bass in drop D, use the bass tuner and choose Drop D.

Is my audio recorded?+

No. The sound is analyzed in your browser, on your device. Nothing is saved or uploaded.

Drop D Tuner

How to Tune to Drop D

String Notes and Frequencies

Questions

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