110 Hz: the A string of a guitar

110 Hz is the open fifth string of a guitar in standard tuning, two octaves below the 440 Hz reference A. Because it is an exact fraction of 440, it is the guitar string most easily checked against a tuning fork.

• Tune your A string with the guitar tuner
• All six standard-tuning frequencies

Which note 110 Hz is at other reference pitches

“In tune” depends on what A4 is tuned to, so the same frequency is a slightly different distance from the nearest note in each tuning.

Octaves of 110 Hz

Doubling a frequency raises it an octave and halving lowers it one, so these all have the same note name.

• 27.50 Hz · A0
• 55.00 Hz · A1
• 220.00 Hz · A3
• 440.00 Hz · A4
• 880.00 Hz · A5

Harmonics of 110 Hz

A real instrument playing 110 Hz also sounds whole-number multiples of it. The first eight, and the notes they fall nearest:

Period and wavelength

One cycle of 110 Hz lasts 9.091 milliseconds; in air at 20 °C, where sound travels at about 343 metres a second, one wavelength is 3.12 metres.

Convert another frequency

Or hold 110 Hz as a steady tone, sweep from it, or beat it against a second tone in the tone generator. The note frequency chart lists every note from C0 to B8.

Frequently asked questions

Related frequencies

• 82.41 Hz — the low E string of a guitar
• 146.83 Hz — the D string of a guitar
• 55 Hz — the A string of a bass
• 440 Hz — the standard tuning pitch