What frequencies can humans hear?

Typically 20Hz to 20,000Hz. High frequency hearing decreases with age—many adults can't hear above 15-16kHz.

What are different waveforms for?

Sine: pure tone, good for testing. Square: harsh, used in electronics. Sawtooth/Triangle: richer harmonics, used in music synthesis.

Can I use this to tune instruments?

Yes! A=440Hz is standard tuning pitch. Generate reference tones for any note to tune by ear.

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Tone Generator

Generate sine, square, sawtooth, and triangle waves

Frequency

440.0 Hz

20 Hz2000 Hz

Presets

Wave Type

Volume: 50%

Wave Types

Sine: Pure, smooth tone
Square: Hollow, buzzy sound
Sawtooth: Bright, harsh sound
Triangle: Soft, mellow sound

About Tone Generator

What is Tone Generator?

Generate audio tones at precise frequencies. Choose from sine, square, sawtooth, or triangle waveforms. Useful for audio testing, tuning instruments, and hearing tests.

Features & Benefits

Precise frequency control
Multiple waveforms
20Hz to 20kHz range
Volume adjustment
Preset frequencies
Real-time generation

Frequently Asked Questions

What frequencies can humans hear?: Typically 20Hz to 20,000Hz. High frequency hearing decreases with age—many adults can't hear above 15-16kHz.
What are different waveforms for?: Sine: pure tone, good for testing. Square: harsh, used in electronics. Sawtooth/Triangle: richer harmonics, used in music synthesis.
Can I use this to tune instruments?: Yes! A=440Hz is standard tuning pitch. Generate reference tones for any note to tune by ear.

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How-To Guides

How to Generate a Tone at Any Frequency

100% Private & Secure

This tool runs entirely in your browser. Your files and data never leave your device and are not uploaded to any server.