Online Tone Generator
Generate pure audio tones at any frequency (20 Hz–20 kHz) — sine, square, sawtooth and triangle waves. Free, runs in your browser.
440 Hz
A4
Waveform
Volume
0%50%100%
Frequency Presets
Note Frequency Reference
| Note | C | D | E | F | G | A | B |
|---|---|---|---|---|---|---|---|
| Oct 3 | |||||||
| Oct 4 | |||||||
| Oct 5 |
Click any frequency to set it. All values in Hz, A4 = 440 Hz (standard tuning).
Frequently asked questions
What does Online Tone Generator do?
Generate pure audio tones at any frequency (20 Hz–20 kHz) — sine, square, sawtooth and triangle waves. Free, runs in your browser.
What should I check in the result?
Review the generated result in its destination application. Check formatting, required fields and the options you selected before sharing it.