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DTMF Tone Generator
Standard telephone keypad tones — correct low/high frequency pairs.
Tap a key
DTMF standard
Each key plays two sine tones — a low-group and high-group frequency per ITU-T Q.23.
Keyboard
You can also press keys 0–9, *, and # on your keyboard when the page is focused.
Privacy
Tones are generated locally. No connection to telephone networks.
How to use
Adjust settings
Use sliders and controls to set frequency, volume, and waveform. Changes apply in real time.
Export or share
Download a WAV file or copy a share link. All processing stays on your device.
Frequently asked questions
Are these correct DTMF frequencies?
Yes — per ITU-T Q.23 low/high groups.