See how a pitch changes when you move it by whole octaves. Enter a starting frequency in hertz and choose how many octaves to shift, up or down, and this tool doubles the frequency for each octave higher and halves it for each octave lower. This simple two to the power relationship is the most fundamental in music: an octave up always sounds like the same note but higher, because the frequency exactly doubles. That is why A4 at 440 Hz becomes A5 at 880 Hz and A3 at 220 Hz. Use the tool to plan octave doublings in an arrangement, to check where a bass note lands an octave down, or to teach the physics of pitch. It shows the multiplication factor and lists the pitch across a range of octaves so you can see the doubling pattern clearly.
Going up one octave doubles the frequency and going down one octave halves it.
Yes, enter the number of octaves to shift up or down and the tool multiplies or divides the frequency accordingly.
Enter any starting frequency in Hz and choose how many octaves to move it.
See how a pitch changes when you move it by whole octaves. Enter a starting frequency in hertz and choose how many octaves to shift, up or down, and this tool doubles the frequency for each octave higher and halves it for each octave lower.
Yes. Octave Frequency Calculator is completely free, with no sign-up and no usage limits.
Yes. Octave Frequency Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Octave Frequency Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.