Advanced free browser tool

Tone Generator

Create a test tone or controlled frequency sweep using the Web Audio API. Start at low volume, choose a waveform and stop instantly from any device.

Evidence, not guessworkNo sign-up · Local processing
Hz

Tone Generator workspace

Fast, private and designed for touch

BROWSER ONLY

Loading the interactive workspace…

✓ 1–20,000 Hz control✓ Four oscillator waveforms✓ Frequency sweep and note presets✓ Volume safety and instant stop

A focused three-step workflow

How to use the tone generator

  1. 1

    Add only what the tool needs

    Enter the relevant values, paste the source or select a local file. Input remains in this browser tab.

  2. 2

    Use the advanced controls

    Adjust matching, timing, measurement or inspection options. Safe defaults are selected for the most common task.

  3. 3

    Review result and evidence

    Use the diagnostics, warnings and supporting measurements to verify the main result before acting on it.

More than a one-number result

Create a test tone or controlled frequency sweep using the Web Audio API. Start at low volume, choose a waveform and stop instantly from any device. The workspace keeps the primary action quick while exposing the evidence that basic alternatives often omit.

1–20,000 Hz controlIncluded in the same responsive workspace with clear labels and practical output.
Four oscillator waveformsIncluded in the same responsive workspace with clear labels and practical output.
Frequency sweep and note presetsIncluded in the same responsive workspace with clear labels and practical output.
Volume safety and instant stopIncluded in the same responsive workspace with clear labels and practical output.

Private browser processing

Rantey performs this task with browser capabilities on your device. Selected files and entered data are not posted to an application endpoint. For sensitive work, still review the result and follow your organization’s security policy.

Mobile-ready and accessible

Controls stack on narrow screens, buttons keep large touch targets and wide diagnostic tables scroll inside their own container. Keyboard focus, status messages and readable contrast are included for desktop and mobile use.

Frequently asked questions

Tone Generator FAQ

Is Tone Generator free?+

Yes. It is free to use with no registration, subscription or watermark.

Does it work on Android, iPhone and desktop?+

Yes. The interface uses responsive layouts and touch-friendly controls in current mobile and desktop browsers.

Is my input uploaded?+

No. The calculation, inspection or test runs in the current browser tab. Rantey does not receive the entered values or selected files.

How is this different from a basic online tool?+

It combines the main result with validation, evidence and practical diagnostics so you can understand and verify the output.