Online Dog Whistle

New: install the dog whistle as an app

You don’t need an app store. On Android or desktop Chrome/Edge, tap Install app under the whistle. On iPhone or iPad, open this page in Safari, tap the Share button and choose Add to Home Screen. The whistle then opens full screen from its own icon, works without an internet connection, and remembers your dog’s favorite frequency.

• Hold to whistle: press and hold the button. The tone plays only while your finger is down, just like blowing a real whistle.
• Frequency finder: plays short pips at rising frequencies, and you tap when your dog reacts. That frequency is saved as your favorite.
• Vibration feedback on supported phones, so you know a signal was sent even when you can’t hear it.

How to use the online dog whistle

1. Test your sound. Tap the 440 Hz preset and press play. If you hear nothing, check your volume, mute switch and Bluetooth output.
2. Find a working frequency. Pick a preset between 10 kHz and 20 kHz and watch your dog. A head tilt, ear twitch or a glance toward the phone means they hear it.
3. Choose a sound style. Pulse beeps are easier for dogs to notice than a steady tone. Sweep glides up to your device’s maximum, which is handy for checking your own hearing.
4. Use the training signals. The recall, stop and attention buttons play the classic gundog whistle patterns at the frequency you chose.

Dog whistle frequency: which Hz should I use?

Dogs hear roughly 67 Hz to 45,000 Hz, compared with about 20 Hz to 20,000 Hz for a young adult human. Most adults lose the top few kilohertz with age. Any frequency in the table below is audible to a healthy dog. Pick based on whether you want people nearby to hear it.

Tip: consistency matters far more than the exact number. Once you’ve found a frequency your dog responds to, stick with it. Changing it every session is like changing the word for “sit.”

Why no website can play a truly “silent” 40 kHz whistle

Many dog whistle apps advertise 30,000 to 54,000 Hz. In a browser, that’s physically impossible. Digital audio can only reproduce frequencies up to half its sample rate. Browsers run at 44,100 or 48,000 samples per second, so the ceiling is about 22–24 kHz. On top of that, small phone and laptop speakers usually drop off sharply above 18–20 kHz.

This whistle detects your device’s real limit and shows it under the slider, so the frequency on screen is the one that actually plays. If you need truly inaudible ultrasonic tones, a physical adjustable whistle is the right tool. For everyday training, an audible-to-you tone works just as well, as long as you use it consistently.

How to train your dog with a whistle

A whistle is just a cue, like a word. Dogs aren’t born knowing what it means, so you teach it with positive reinforcement. Start with recall, the most useful whistle command:

1. Charge the whistle. In a quiet room, play the Recall signal and immediately give a high-value treat. Repeat 10–15 times over a couple of short sessions. Your dog doesn’t have to do anything yet.
2. Add distance. When your dog perks up at the sound, play it while they’re a few steps away. Reward generously when they come to you.
3. Add distractions slowly. Practice in the garden, then on a long line in a quiet park, then in busier places. If your dog ignores the whistle, go back a step.
4. Never use it to punish. Don’t whistle your dog in to scold them or to end every fun walk. The whistle should always predict something good.
5. Keep it reliable. Once trained, keep rewarding recalls now and then for life. Unrewarded cues gradually fade.

Common whistle commands

These are conventions from gundog training. You can choose any patterns, as long as each one always means the same thing.

Using a whistle for barking, jumping and other problem behaviors

A sudden sound will often interrupt a behavior, but interrupting isn’t the same as teaching. The whistle works best as a cue for something your dog should do instead: come to you, sit, or go to their bed. Then reward that behavior. Step-by-step: how to train a whistle to stop barking. For other plans, see our guides on stopping excessive barking, jumping up and whining. For a quick read on what might be driving a behavior, try the pet behavior analysis tool.

Safety tips

Used at a sensible volume, a whistle isn’t a sound dogs hate: it’s a cue that predicts something good. Curious which noises really bother dogs? See sounds dogs hate (and why), or relax your dog with our calming music player.

• Don’t use headphones or earbuds with this tool, and keep the volume moderate.
• Don’t hold the speaker right next to your dog’s ears. Arm’s length or more is plenty.
• Keep sessions short. A training cue lasts a second or two, not minutes.
• Watch your dog’s body language. Flattened ears, cowering, lip-licking or leaving the room mean stop.
• If your dog suddenly stops responding to sounds, have a vet check their hearing. Senior dogs often lose high-frequency hearing first.