Hertz to octaves from A4
Type a value in Hz to get it in octaves instantly.
0octaves
That's about the same as concert A. That is about 0 semitones from concert A.
What it means
What does that sound like?
Based on equal temperament with A4 at 440 Hz. Orchestras sometimes tune to 442 or 443, shifting everything slightly.
The math
How to convert Hz to octaves
Pitch is logarithmic: f = 440 × 2^((note − 69) ÷ 12). Every octave doubles the frequency and holds 12 semitones.
Example: 440 Hz = 0 octaves.
Every unit
Your pitch in every unit
Tables
Hz to octaves conversion table
| Hz | octaves |
|---|---|
| 55 Hz | -3 octaves |
| 110 Hz | -2 octaves |
| 220 Hz | -1 octaves |
| 261.63 Hz | -0.749976 octaves |
| 330 Hz | -0.415037 octaves |
| 440 Hz | 0 octaves |
| 523.25 Hz | 0.249997 octaves |
| 660 Hz | 0.584963 octaves |
| 880 Hz | 1 octaves |
| 1,760 Hz | 2 octaves |
octaves to Hz conversion table
| octaves | Hz |
|---|---|
| -3 octaves | 55 Hz |
| -2 octaves | 110 Hz |
| -1 octaves | 220 Hz |
| -0.75 octaves | 261.626 Hz |
| -0.415 octaves | 330.009 Hz |
| 0 octaves | 440 Hz |
| 0.25 octaves | 523.251 Hz |
| 0.585 octaves | 660.017 Hz |
| 1 octaves | 880 Hz |
| 2 octaves | 1,760 Hz |
Quick answers
Quick answers
- How many octaves is 1 Hz?
- 1 Hz is -8.78136 octaves.
- How many octaves is 10 Hz?
- 10 Hz is -5.45943 octaves.
- How many octaves is 440 Hz?
- 440 Hz is 0 octaves.
The units
About these units
Hertz (Hz)
Cycles per second, the physical frequency of the note.
Octaves from A4 (octaves)
How many doublings above or below concert A the note sits.
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