A western twelve tone equal temperament reference table in hertz. C4 is the middle C

0 1 2 3 4 5 6 7 8 9 10
C 16.352 32.703 65.406 130.813 261.626 523.251 1046.502 2093.005 4186.009 8372.018 16744.036
C#/Db 17.324 34.648 69.296 138.591 277.183 554.365 1108.731 2217.461 4434.922 8869.844 17739.688
D 18.354 36.708 73.416 146.832 293.665 587.33 1174.659 2349.318 4698.636 9397.273 18794.545
D#/Eb 19.445 38.891 77.782 155.563 311.127 622.254 1244.508 2489.016 4978.032 9956.063 19912.127
E 20.602 41.203 82.407 164.814 329.628 659.255 1318.51 2637.02 5274.041 10548.082 21096.164
F 21.827 43.654 87.307 174.614 349.228 698.456 1396.913 2793.826 5587.652 11175.303 22350.607
F#/Gb 23.125 46.249 92.499 184.997 369.994 739.989 1479.978 2959.955 5919.911 11839.822 23679.643
G 24.5 48.999 97.999 195.998 391.995 783.991 1567.982 3135.963 6271.927 12543.854 25087.708
G#/Ab 25.957 51.913 103.826 207.652 415.305 830.609 1661.219 3322.438 6644.875 13289.75 26579.501
A 27.5 55 110 220 440 880 1760 3520 7040 14080 28160
A#/Bb 29.135 58.27 116.541 233.082 466.164 932.328 1864.655 3729.31 7458.62 14917.24 29834.481
B 30.868 61.735 123.471 246.942 493.883 987.767 1975.533 3951.066 7902.133 15804.266 31608.531