Drop D Tuner

Free online Drop D tuner — tune your guitar to Drop D (D A D G B E) by ear with your mic, accurate to the cent. Plus the notes, how to drop-tune and songs in Drop D.

The notes

D2 · A2 · D3 · G3 · B3 · E4 (low to high). It's standard tuning with only the lowest string dropped a whole tone from E down to D.

What is Drop D tuning?

Drop D keeps five strings at standard pitch and lowers the 6th string from E to D. That low D gives a heavier, deeper sound and lets you play a power chord on the bottom three strings with a single finger — which is why it's everywhere in rock and metal.

How to tune to Drop D

1. Open the Drop D tuner and allow microphone access.
2. Play one string at a time and read the needle.
3. Turn the peg until the note turns green (within ±5 cents).

Songs & uses

• “Everlong” — Foo Fighters
• “Killing in the Name” — Rage Against the Machine
• Countless modern rock & metal riffs

Frequently asked questions

Is the Drop D tuner free?

Yes, 100% free in your browser — no app or sign-up.

What are the Drop D notes?

Low to high: D A D G B E. Only the lowest string changes (E→D).

How do I tune to Drop D?

Tune normally, then lower the thickest (6th) string until it matches the open 4th (D) string an octave lower — the tuner targets D2 for you.

Does it work on mobile?

Yes, it works in mobile browsers with your microphone.

More tools: all-tunings guitar tuner · free metronome · play songs

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