This Bluetooth test checks two things: whether your computer or phone has a working Bluetooth adapter, and how well a Bluetooth device talks to it. The adapter check runs as soon as the page opens. Then you pick a device from your browser's list, and the tester connects and times the connection, reads the battery level, maker, model and firmware, lists the device's services and values, measures how fast it answers, and counts every time the connection drops. It works with Bluetooth Low Energy devices, such as fitness trackers, heart rate straps, sensors, smart tags, maker boards and many newer earbuds, in Chrome, Edge and Opera on Windows, macOS, ChromeOS and Android.
How to test a Bluetooth device
- Turn Bluetooth on and wake the device up. Put it in pairing mode if it has one.
- Check the adapter line at the top of the tester. A green light means the browser found a Bluetooth adapter.
- Press Find a device. Your browser shows the devices it can hear. Pick yours and press Pair or Connect.
- Wait a moment while the tester reads the device. The battery, details and services fill in by themselves.
- Walk away with the device, or leave it a few minutes, and watch Read response and Dropped. Press Measure response to time it again.
- Press Copy results to keep the details for a support request.
What the results mean
| Readout | What it shows | Good result |
|---|---|---|
| Adapter | Whether the browser found a usable Bluetooth adapter | Bluetooth adapter found |
| Time to connect | How long the connection took | 200 to 1,500 ms |
| Battery | Charge level from the device's battery service | Above 20% for range tests |
| Services | Groups of values the page may read | 1 or more |
| Read response | Average time to answer a read, over a series of reads | 15 to 100 ms, and steady |
| Dropped | Times the device disconnected by itself | 0 |
The Type, Maker, Model and Firmware lines come from the device itself. Firmware is worth noting: makers fix many pairing and dropout problems in updates, which usually come through their phone app.
Headphones and speakers do not appear
Bluetooth comes in two kinds. Classic Bluetooth carries audio and is used by most headphones, speakers, car kits and older keyboards and mice. Bluetooth Low Energy is used by trackers, sensors and smart gadgets, and newer earbuds often support both. Browsers only let web pages talk to Low Energy devices, so a classic-only headset never appears in the list, even when it works perfectly.
To test a Bluetooth headset, pair it in your system settings first. Then play sound to each side with the left right audio test and the headphone test, and measure the delay Bluetooth adds with the bluetooth audio latency test. If AirPods or other earbuds will not pair at all, follow the airpods not connecting guide.
A device can also be missing from the list because it is already connected to another computer or phone, which makes many devices stop advertising. Disconnect it there first.
Some speakers and headphones pair with a tap: hold the NFC spot on the back of an Android phone against the N mark on the speaker. If the tap does nothing, check the phone with the nfc test. A Bluetooth MIDI keyboard or controller is paired in your system's MIDI settings rather than here, and the midi tester then shows its notes.
No Bluetooth adapter found
- Windows 11 and 10: open Settings, then Bluetooth & devices (Devices on Windows 10), and turn Bluetooth on. If there is no switch, open Device Manager and look under Bluetooth. A missing adapter or a yellow warning means a driver problem: install the Bluetooth driver from your PC maker or from Intel, Realtek or MediaTek, depending on the chip.
- Mac: turn Bluetooth on in Control Center. If the page still cannot see it, open System Settings, then Privacy & Security, then Bluetooth, and allow your browser.
- Android: turn Bluetooth on and allow Chrome to find Nearby devices in its app permissions. Older Android versions ask for Location instead.
- Linux: Chrome keeps Bluetooth for web pages switched off. Turn on Experimental Web Platform features in chrome://flags and restart Chrome.
- USB dongles: plug the dongle in directly, not through a hub, and give it a moment for the system to install it.
If the adapter appears and then vanishes, or Windows says Bluetooth is turned off when it is not, the bluetooth not working guide covers drivers, power settings and resets step by step.
The device keeps disconnecting
A climbing Dropped count or uneven Read response times mean the link is weak. Check these, from the most common:
- Distance and obstacles. Most devices manage about 10 m in open air, much less through walls, bodies and metal desks. Test again close up.
- 2.4 GHz interference. Bluetooth shares the band with 2.4 GHz Wi-Fi, microwave ovens and wireless dongles. USB 3 ports and cables also leak noise near 2.4 GHz, so move a Bluetooth dongle away from them with a short USB extension cable.
- Power saving. On Windows, open Device Manager, open your Bluetooth adapter's properties, and on the Power Management tab untick Allow the computer to turn off this device to save power.
- A low battery. Many devices cut their radio power when the battery runs low.
- Too many devices. Adapters handle several connections, but cheap ones struggle with more than a few at once.
Game controllers that will not stay connected to a PC are covered in the controller not connecting to pc guide, and the gamepad tester confirms every button once it pairs.
Test Bluetooth on Windows, Mac, Android and iPhone
- Windows 11: Settings, Bluetooth & devices shows paired devices and their battery levels. For a built-in troubleshooter, open Settings, then System, then Troubleshoot, then Other troubleshooters, and run Bluetooth. The Bluetooth Support Service must be running in services.msc.
- Mac: hold Option and choose System Information from the Apple menu, then Bluetooth, to see the chipset, firmware version and connected devices. If Bluetooth stops responding, run
sudo pkill bluetoothdin Terminal to restart it. - Android: Settings, then Connected devices shows paired devices. To start fresh on a Pixel, open Settings, then System, then Reset options, and choose Reset Bluetooth & Wi-Fi. On a Samsung Galaxy, open Settings, then General management, then Reset, then Reset Wi-Fi and Bluetooth settings.
- iPhone and iPad: Settings, then Bluetooth. Tap the info button next to a device and choose Forget This Device to pair again from scratch. Safari, Chrome and Firefox on iPhone cannot run this test.
For makers: BLE serial modules
Boards that send data over Bluetooth Low Energy, such as ESP32 and nRF52 projects using the Nordic UART service, or HM-10 style modules, show up here with a value you can listen to and one you can write to. Press Listen on the transmit value to watch the board's output, and use Write to send it text or hex. For boards on a USB cable, use the serial monitor online instead.
What a browser Bluetooth test cannot check
Browsers do not report signal strength in dBm, cannot pair or unpair devices, cannot see classic Bluetooth devices, and keep keyboard, mouse and controller input services private. They also cannot tell which audio codec a headset uses. For those, use your system's Bluetooth settings or the device maker's app. What the tester can show, whether the adapter works and whether a device connects quickly and stays connected, covers most everyday Bluetooth problems.
Bluetooth test questions
How do I test if Bluetooth works on my PC?
Open this page in Chrome or Edge. The top of the tester says whether the browser found a Bluetooth adapter. Then press Find a device: if nearby devices appear in the list, the adapter is scanning and working. Connect to one to check that connections hold.
Why does my Bluetooth headset not show up in the list?
Most headphones and speakers use classic Bluetooth, which browsers cannot reach. Only Bluetooth Low Energy devices appear. To check a headset, pair it in your system settings and use the headphone test to check its sound.
Can I test Bluetooth online on an iPhone?
Not in Safari, Chrome or Firefox. Browsers on iPhone and iPad are built on Apple's WebKit engine, which does not let web pages use Bluetooth devices, and only a few specialist browser apps add it. Check the device in Settings, then Bluetooth, instead.
What does the read response time mean?
It is the time the device takes to answer a read over the Bluetooth link. Most devices answer in 15 to 100 ms. Times that jump around a lot, or reads that fail, point to distance, walls, interference or a low battery.
Why is the battery level missing?
Only devices with the standard battery service report it to the browser. Many headphones, mice and keyboards report their battery only to your system, so check it there, for example in Windows Settings under Bluetooth & devices.
Is it safe to connect a device to this page?
Yes. The browser only lets the page talk to the one device you pick, and blocks services such as keyboard input. Nothing is sent anywhere, and the connection ends when you close the tab.