2 Ways to Check How Many Devices Are Connected to WiFi

2 Ways to Check How Many Devices Are Connected to Your WiFi (And What to Do About Unauthorized Ones)

Is your wifi running slower than molasses in January? Before you rage-quit and launch your router out the window, consider this: according to a recent report by Parks Associates, the average U.S. household now has over 10 connected devices. That‘s a lot of gadgets jockeying for your wifi‘s attention!

Luckily, as a MacOS and software expert, I‘m here to walk you through how to see exactly how many devices are connected to your home or small office network – and what to do if you spot any uninvited guests. Keeping tabs on your wifi connections is crucial for three key reasons:

1. Security: A 2020 study by Bitdefender found that 64% of Americans have never checked for unknown devices on their network. Yikes. Hackers can exploit these rogue connections to spy on your online activity, steal sensitive info, even access your IoT devices like security cameras. Bad news bears.

2. Performance: The more devices trying to use your wifi at once, the slower it‘ll be for everyone. It‘s like a highway – more cars equals more traffic. Older routers can realistically only handle around 10-15 devices before things start getting laggy.

3. Household Harmony: Hell hath no fury like a teenager whose TikTok stream is interrupted. If your wifi‘s chugging, performing a quick device audit is a great first troubleshooting step before you start pointing fingers at each other.

Okay, let‘s get into the nuts and bolts.

Method 1: Check Your Router‘s Admin Page
Your router is like the bouncer at the club – it decides which devices get let into the wifi party. Most have an admin page you can access to see a list of everything that‘s currently connected (or has been previously). Here‘s generally how you find it:

Windows:

1. Click the start menu and open the Command Prompt
2. Type "ipconfig" and hit Enter
3. Look for the line that says "Default Gateway" followed by an IP address (something like 192.168.0.1)

Mac:

1. Click the Apple menu and open System Preferences
2. Select Network, then click Advanced in the lower right
3. Go to the TCP/IP tab to see your router‘s IP next to "Router"

Now, open any web browser and paste that IP address into the URL bar. You should see a login screen like this:

If you never changed the default password, it‘s probably printed on a sticker somewhere on your physical router. If you can‘t find it, search online for your router‘s model + "default password".

Once you‘re logged in, look for a section called something like "Attached Devices" or "Client List." Voila – there‘s your list of everything currently connected to your network, along with some helpful details:

In this example from a Netgear router, we can see 12 total devices connected, including their hostnames (like "John‘s MacBook Pro"), IP addresses, MAC addresses, and connection type.

The MAC address is key – it‘s like a device‘s digital fingerprint. Every wifi-capable gadget has a unique one, and you can use it to figure out who made the device. The first 6 characters actually tell you the manufacturer.

For example, if you see a rogue device with a MAC that starts with B4:E6:2D, pop that into a MAC lookup tool like maclookup.app. You‘ll see that prefix belongs to Sony – so you‘re probably looking at a PlayStation that jumped onto your network. Mystery solved!

If you can‘t suss out an unknown device, try these tricks:

1. Power down your own devices one-by-one and keep refreshing the list until it disappears. Tedious but effective!
2. If you have any smart home gadgets like wifi lightbulbs or a thermostat, those are easy to overlook. Systematically turn them off and see if the device list changes.
3. As a last resort, change your wifi password. This will boot EVERYTHING off the network until you log back in with the new password. Then keep an eye out to see if the freeloader reappears.

Method 2: Use a Network Scanning App
Don‘t feel like mucking around in your router settings? I don‘t blame you. There are plenty of smartphone and computer apps that can run a network scan for you and report back what they find, no technical skills required. Some of my favorites:

• Fing (Android & iOS): This one‘s great for less tech-savvy folks, with a simple interface and easy setup. It‘ll show you all the devices currently on your network, plus any that were previously connected. You can customize the device names so they‘re more recognizable. And if you spot a suspicious device, you can even boot it off your wifi remotely right from the app!

• Angry IP Scanner (Windows, Mac, Linux): This open-source tool has been around since 2001, so you know it‘s battle-tested. It‘s lightning-fast, able to scan a network with 65,536 addresses in under 20 seconds. While it lacks some of the bells and whistles of newer apps, it reliably gets the job done.

• Wireless Network Watcher (Windows): Confession: this one‘s my personal go-to. It‘s a portable app, so no installation required – just download and run. In addition to showing you what‘s connected in real-time, it also logs changes to your network, so you have a historical record. It can even notify you if a new unknown device joins.

Here‘s a quick comparison table of these apps:

So how often should you actually check in on your wifi devices? At minimum, I recommend taking a peek quarterly. Think of it like checking your smoke alarm batteries when the seasons change. Better yet, make it a monthly habit – pick a memorable date like the 1st and set a recurring reminder on your phone.

According to Cisco, the number of connected devices worldwide will hit 29.3 billion by 2023. To put that in perspective, that‘s nearly FOUR devices for every human on the planet. Wild, right?

With all these gadgets knocking on your wifi‘s door, you can‘t afford to just "set it and forget it" anymore. Channel your inner bouncer and stay vigilant! Your network security (and your sanity) will thank you.

Now if you‘ll excuse me, my smart fridge says I‘m running low on sparkling water. Gotta add that to my IoT-powered grocery list! Stay secure, my friends.