Can I record audio with this tool?

Yes, our audio recorder uses the Web Audio API to capture microphone input directly in your browser. Recordings are available for playback and download.

What is a tone generator?

A tone generator produces test tones at specific frequencies, useful for audio testing, hearing tests, and sound system calibration. You can adjust frequency, waveform, and volume.

How does the BPM tapper work?

The BPM (beats per minute) tapper calculates tempo based on your tapping rhythm. Tap along with music to find its tempo, or tap at your desired pace to find the BPM.

Are recordings stored on your server?

No. All audio processing and recording stays in your browser. No data is transmitted to any server.

Tone Generator

Free online tone generator. Generate sine, square, triangle, sawtooth waves. All processing in your browser.

○ Stopped

Frequency: 440 Hz

20 Hz20000 Hz

Waveform

Volume: 50%

Detune: 0 cents

-100¢+100¢

Common Notes

Piano Keyboard (2 octaves)

Embed this tool

Copy and paste the code below into your website to embed this tool for free. An attribution link to The Util Box is required.

<iframe src="https://www.theutilbox.org/embed/tone-generator" width="600" height="500" frameborder="0" style="border: none; max-width: 100%;" title="Free Tone Generator tool from The Util Box"></iframe>
<!-- Free tool by The Util Box — https://www.theutilbox.org/tools/tone-generator -->
<a href="https://www.theutilbox.org/tools/tone-generator">Tone Generator by The Util Box</a>

Frequently Asked Questions about Tone Generator

What Is Tone Generator?

Free online tone generator. Generate sine, square, triangle, sawtooth waves. All processing in your browser. Whether you need a quick calculation, text transformation, or data conversion, this free online audio tool delivers instant results entirely in your browser — no server uploads, no sign-ups, and no data leaves your device.

How to Use the Free Tone Generator Online

Enter your input — type, paste, or select data in the provided field.
Adjust options — tweak any available settings or parameters to match your needs.
Get instant results — output appears immediately as you type or after clicking a button.
Copy or export — use the copy button to grab the result for use elsewhere.

All processing happens client-side using JavaScript, so your information never leaves your computer. This free online audio tool requires no registration and works on any modern browser.

Why Choose Our Free Tone Generator Tool?

100% free — no hidden premium tiers or usage limits.
Fully private — runs entirely in your browser; no data is sent to any server.
Instant & fast — results appear in milliseconds with zero load times.
Works offline — after the first load, the tool is available without an internet connection.
No sign-up — open the page and start using it immediately.

Tone Generator — Quick Reference

Feature	Details
Category	audio
Processing	100% client-side (browser)
Privacy	No data leaves your device
Cost	Free — no sign-up required
Works Offline	Yes (after first load)