Runs in your browser. Nothing is uploaded.
Tone Generator
Play a sine, square, triangle, or saw wave from 20 Hz to 20 kHz. Start with the volume low.
15%
440 Hz
More tests
What it measures
Frequency
Any pitch from 20 Hz to 20 kHz, with presets for common test tones.
Shape
Sine, square, triangle, and saw waves, so you can hear how the speaker handles each one.
Questions
Can a loud tone damage hearing?
Keep the level low, especially with headphones. Start near the bottom of the volume control.
Does this upload audio?
No. The tone is generated in the browser and played locally.