Online dog whistle
A free, adjustable dog whistle right in your browser. Slide to the frequency you want, press play, and watch your dog’s reaction. Below, the science of which frequencies actually reach a dog — and why a “silent” whistle isn’t silent to them.
How it works
- 1Slide to the frequency you want, or tap a preset.
- 2Press Play and watch your dog — ears perking, head tilting or turning toward the sound means they hear it.
- 3Start lower and moderate the volume; you’re looking for attention, not a startle.
- 4Pair the whistle with a reward to build a recall or “look at me” cue.
What frequency is a dog whistle?
Traditional “silent” dog whistles produce roughly 23–54 kHz — above the ~20 kHz ceiling of adult human hearing, but comfortably inside a dog’s range. Dogs hear from about 40 Hz up to 45,000–65,000 Hz, far beyond our 20 Hz–20 kHz. That’s why a whistle can be “silent” to you and clearly audible to your dog. In a browser, you’re limited by your device’s speaker — many top out near 20 kHz — so the high presets here are best thought of as “as high as your hardware can go.”
Does a dog whistle stop barking?
A whistle by itself doesn’t “switch off” barking — it interrupts and redirects attention. The training works when you consistently pair the sound with a cue and a reward, so the dog learns to orient to you instead of continuing to bark. Used as a startle or punishment, high tones can backfire and increase anxiety. Positive, consistent association is what makes a whistle useful.
Frequently asked questions
Most dog whistles emit between about 23 kHz and 54 kHz — above human hearing (~20 kHz) but well within a dog’s range, which extends to roughly 45–65 kHz.
Usually not the ultrasonic part. Younger people may hear up to ~17–20 kHz; sensitivity drops with age. Below ~17 kHz, most people will hear the tone too.
Partly. Consumer speakers and browsers typically roll off above ~20 kHz, so the very high presets may be quiet or inaudible even to your dog. Lower frequencies (8–15 kHz) reproduce reliably.
At a moderate volume, no. It’s an attention signal, not pain. But loud or repeated startling tones can stress a dog, so keep the volume down and use it positively.
It can interrupt barking to get attention, but lasting results come from pairing the sound with a trained cue and reward — not from using it as punishment.
Does your dog actually respond?
Play a whistle, then record your dog’s reaction with BarkScope to see how their own bark changes — pitch, tone and all. First recording free.
●Try BarkScope free