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Semitone Calculator
Calculate how many semitones to add or subtract from an audio clip, tuned to 440Hz, to tune it to a frequency of your choice.
Enter frequency (Hz)
Quick presets
425 Hz
432 Hz
446 Hz
450 Hz
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Reference: A4 = 440 Hz is the standard concert pitch.
Common alternative tunings include 432 Hz and 444 Hz.