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440 Hz Tone — Online Generator

Generate a clean audio tone of a given frequency and waveform locally in the browser.

Processing... 0%
Setting oscillator
Rendering tone
Encoding WAV output

Result

This page opens the tone generator already set to 440 Hz — choose a waveform and duration, generate the tone, then play it or download the WAV. 440 Hz is the modern concert pitch: the A4 that orchestras and tuners worldwide reference.

Pure tones are handy for testing speakers and headphones, tuning instruments by ear, audio experiments and relaxation sessions. Start at a low volume — a sustained pure tone can be harsh when loud.

Need a different pitch? Open the full generator and dial in any frequency from 20 Hz to 20 kHz. Everything runs locally in your browser — nothing is uploaded or stored.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Local audio decoding and processing
  • Immediate preview before download
  • Clear export flow for the final result

Key Benefits

✓ Works locally in the browser for private audio handling.
✓ Keeps preview and adjustment controls close to the result.
✓ Exports the finished file without sending the source audio to a server.

Use Cases

  • • Do you need to test headphones or speakers for sound distortion?
  • • Do you want to tune a musical instrument to a precise sound standard?
  • • Do you need to conduct a laboratory experiment or demonstrate the physics of sound waves?