Guitar tuner: Open D minor tuning
In Open D minor tuning, the open strings of guitar, from string 6 to string 1, are D2 A2 D3 F3 A3 D4, with concert A (A4) at 440 Hz. The lowest note is D2, at 73.42 Hz, and the highest is D4, at 293.66 Hz.
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— Hz — cents
Tap “Turn on tuner” and allow the microphone.
Guitar tunings
Standard and lower tunings
Other tunings
Open D minor tuning
Open D minor tuning: the open strings form a D minor chord. A melancholy color used in folk and blues.
Notes: D2 A2 D3 F3 A3 D4.
Notes and frequencies of each string
| String | Note | Frequency |
|---|---|---|
| 6 | D2 | 73.42 Hz |
| 5 | A2 | 110.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | F3 | 174.61 Hz |
| 2 | A3 | 220.00 Hz |
| 1 | D4 | 293.66 Hz |
How to use it
Tap “Turn on tuner”, allow the microphone and play one open string at a time. The tuner recognises the string and shows whether to tighten it (it is flat) or loosen it (it is sharp). Tap a string name to lock onto it and hear the reference note.
Frequently asked questions
What are the open-string notes of guitar in Open D minor tuning?
From string 6 to string 1: D2 A2 D3 F3 A3 D4.
What is the frequency of the lowest note in this tuning?
It is D2, at 73.42 Hz (with concert A at 440 Hz). The highest is D4, at 293.66 Hz.
Does the tuner work offline?
Yes. After the first visit (or once installed as an app), the pages open without a connection and pitch detection happens on your device.
What are cents?
A cent is one hundredth of a semitone. Up to 5 cents off is barely audible; the needle turns green in that range.
Can I change the reference A?
Yes: the − and + buttons set A4 anywhere from 430 to 450 Hz, to play along with a piano or a recording tuned differently. Your choice is saved.
Does the microphone record what I play?
No. The sound is analysed on the fly, inside the browser, and is never recorded or sent anywhere.