Fa or F is the fourth note of the solfege. When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the F note is approximately 349.228 Hz. See pitch (music) for a discussion of historical variations in frequency.
Designation by octave
| Scientific Designation |
Helmholtz Designation |
Octave Name |
Frequency (Hz) |
| F-1 |
Fˌˌˌ |
Subsubcontra |
10.913 |
| F0 |
Fˌˌ |
Subcontra |
21.827 |
| F1 |
Fˌ |
Contra |
43.654 |
| F2 |
F |
Great |
87.307 |
| F3 |
f |
Small |
174.614 |
| F4 |
f′ |
One-lined |
349.228 |
| F5 |
f″ |
Two-lined |
698.457 |
| F6 |
f′″ |
Three-lined |
1396.913 |
| F7 |
f″″ |
Four-lined |
2793.826 |
| F8 |
f′″″ |
Five-lined |
5587.652 |
| F9 |
f″″″ |
Six-lined |
11175.303 |
