# DTMF Tone Generator - Complete Guide

> Play phone keypad tones in your browser and download a digit sequence as a WAV file for testing IVR menus and decoders.

Source: https://edesy.in/docs/tools/audio-tools/dtmf-tone-generator

[DTMF Tone Generator](https://edesy.in/tools/dtmf-tone-generator) plays the tones a phone keypad makes and turns a typed digit sequence into a WAV file. Tones and files are generated in your browser. Nothing is uploaded.

## How to Use

1. Press and hold a key on the on-screen keypad, or use your keyboard (0-9, \*, #). The tone plays for as long as you hold it. Each key shows its low and high frequency.
2. Optional: turn on **Show A-D keys** for the extra column used by test equipment.
3. Type a **Digit sequence**, for example `1,,2*45#`. A comma adds a pause.
4. Set **Tone length (ms)**, **Gap between tones (ms)** and **Pause for each comma (ms)**. The defaults are 100, 100 and 500. The gap is at least 40 ms so repeated digits such as `11` stay two separate presses.
5. Click **Play sequence** to hear it, or **Stop** to cut it short.
6. Choose a **WAV sample rate**: **8000 Hz (telephone)** (default) or **44100 Hz**, then click **Download WAV**.

## Things to know

- **Allowed characters**: 0-9, \*, #, A-D and commas. Spaces, dashes and brackets are ignored, so you can paste a formatted phone number. Other characters are removed and listed in a warning.
- **Length limit**: the sequence can be up to 2 minutes long. The tool shows the number of tones and the total length as you type.
- **Output**: 16-bit mono WAV.
- **Privacy**: everything is generated in your browser.

## Tips

- To test an IVR menu, use commas to wait for each prompt, for example `1,,3,,2`, and raise the comma pause if the menu is slow.
- Use 8000 Hz for anything that goes into a phone system or telephony decoder. Use 44100 Hz for video and music editing.

Want a real phone menu that reads these keypresses? You can build one on [Edesy IVR](https://ivr.edesy.in/); new accounts get INR 20 credit on sign-up, no card needed.

**Related:** [IVR Script Generator](https://edesy.in/tools/ivr-script-generator), [Text-to-Speech Demo](https://edesy.in/tools/text-to-speech-demo)