How Many Devices Can Connect to One Wireless Router?

Computers and other devices on a network must share a finite capacity of resources, and that's true for wired and wireless (​Wi-Fi) networks alike. However, the precise limits depend on multiple factors.

For example, you may notice that when you connect your laptop, a couple of PCs, and some smartphones to your network, it's much harder to stream Netflix or Hulu on your TV. Perhaps the movie stalls or looks fuzzy or you start receiving connection errors.

That's because every device connected to your wireless network takes a bit more of the bandwidth and it has to come from somewhere once the maximum bandwidth is reached. It's as if your network says, 'Oh, you're using your phone right now? No problem, let me pull some strength from that movie that's hogging so much space.'

Most home networks and public Wi-Fi hotspots function with a single wireless access point (a broadband router in the case of home networking). Conversely, larger business computer networks install multiple access points to expand the wireless network's coverage to a much larger physical area. 

Each access point has limits for the number of connections and amount of network load it can handle, but by integrating multiple of them into a larger network, the overall scale can be increased.

Many individual wireless routers and other access points can support up to approximately 250 connected devices.

From a wired perspective, routers can accommodate a small number (usually between one and four) of wired Ethernet clients with the rest connected over wireless.

If you're not sure what your router can support, Google the model number and you should be able to find it that way.

Remember, however, most people only use their network connection occasionally, and a router shifts its available bandwidth to the devices that need it. Those shifts will depend upon what a particular device needs at a particular time.

Most people don't have anywhere near the maximum number of devices a typical router can hold. That's a good thing, because connecting 250 devices to a single Wi-Fi access point, while theoretically possible, is not very feasible for a few reasons:

On home networks, all devices normally share a single internet connection. The performance will start to degrade as more devices join the network and start using it simultaneously. Even just a handful of active devices streaming video or downloading files can quickly max out a shared internet link.

Access points overheat and stop working when operating at extreme loads for extended periods, even if handling only local traffic and not accessing the internet.

Having a large number of Wi-Fi devices concentrated in close physical proximity, like a home or office building, generates significant wireless signal interference. Radio interference among Wi-Fi devices degrades network performance (due to frequent re-broadcasting of messages that fail to reach their destination) and eventually causes connection drops.

Some home routers include a feature that allows administrators to control the number of clients that can simultaneously connect. Many Linksys routers, for example, set a default maximum of 50 maximum devices.

Installing a second router or access point on a home network can greatly help distribute the network load. By adding more access points to the network, effectively any number of devices can be supported. However, this will make the network progressively more difficult to manage.

Something else you can do if you already have one or more routers that support a large number of devices is to increase the bandwidth available to each simultaneously connected device by upping your subscription with your ISP.

For example, if your network devices and internet subscription lets you download at 1 Gbps, then having even 50 devices connected at once lets each device consume up to 20 megabits of data per second.