Modem vs Router: What's the Difference? (2024)

Most people use their home network to access the Internet, but many have no idea how these networks work. Can you tell the difference between a modem and router? Have you ever asked, "do I need a modem and router?" To put it simply, the modem connects your home to the Internet, while a router creates the network inside your house.

Knowing how the blinking boxes plugged into your wall work can help you to get the Internet up and running again the next time there's a power outage or connection disruption.

Short take: what’s the difference between a modem and a router?

Modem Router
Brings Internet to your home Brings Internet to your devices
Has public IP address Assigns local IP addresses
Uses a WAN network Creates a LAN network

Modems bring the Internet to your home

A modem is a device that connects your home, usually through a coax cable connection, to your Internet service provider (ISP), like Xfinity. The modem takes signals from your ISP and translates them into signals your local devices can use, and vice versa. The connection between your house and the Internet is known as a wide area network (WAN). Each modem has an assigned public IP address that identifies it on the Internet.

Routers bring the Internet to your devices

A router connects your devices to each other and, in hard-wired connection setups, to the modem. The router connects to your modem and then to your devices (laptops, smart TVs, printers, etc.) via either an Ethernet cable or, in the case of a wireless router, WiFi signal. The router creates a local area network (LAN) within your house, allowing your devices to share files and peripherals like printers. The router manages all the information going to and from each device and the modem and makes sure it all ends up safely in the right spot. However, a router doesn’t need to connect to a modem to function. You can choose to create a LAN without Internet access.

Simply put, your router:

  • Assigns a local IP address to each device on the network
  • Creates a firewall to prevent security breaches
  • Manages the traffic on your network
  • Handles any Parental Controls
Modem vs Router: What's the Difference? (2024)

FAQs

Modem vs Router: What's the Difference? ›

The modem is responsible for sending and receiving signals from the ISP, while the router disperses the signal to devices on the network. In a typical home network setup, the modem is connected to the router, which is then connected to each device on the network.

Do I need a router if I have a modem? ›

You need both a modem and router to connect to the Internet on multiple devices. Because most modems only have a single LAN Ethernet connector, you'll only be able to connect to one computer at a time with a single cable – which is not ideal for households with multiple people online at once.

How do I know if I need a new modem or router? ›

Reduced Speeds and Reduced Connection Quality

If you feel that your internet speeds have decreased or you are seeing issues with increased buffering and lagging or breaking in the connection, it could be time for a new modem. You can easily test your internet speed with online tools like Speedtest.net.

Are modems still used? ›

Today, modems are ubiquitous and largely invisible, included in almost every mobile computing device in one form or another, and generally capable of speeds on the order of tens or hundreds of megabytes per second.

Is modem and WiFi the same? ›

A modem on its own typically has an Ethernet connection port but no WiFi. However, in many cases, additional parts of the home network (such as a wireless router) are combined with the modem in the same package.

Can I get internet with just a router? ›

If you have multiple devices that need to connect to the Internet, you'll need a router. However, a router by itself will not allow you to connect to the Internet. A router must be connected to the modem to distribute the internet connection to your devices.

Is it better to have separate modem and router or all in one? ›

Is it better to have a separate modem and router? Yes, it's better to have separate devices due to its numerous advantages like more features, faster connectivity, better customization, and improved security.

What makes your internet faster, a router or a modem? ›

Your modem or ONT has an internet port outputting speeds up to 2.5Gbps, but your router uses Gigabit Ethernet for internet, so the most speed you can get from it is 1Gbps—half your plan's speed. Overall, a router can be your chokepoint, not the internet connection itself.

What are modems called now? ›

Often, your internet service provider will give you a device typically referred to as a gateway, a single box that serves as both modem and router, but these are still different technologies.

Where is the modem located in my house? ›

In most cases, devices like modems and routers are situated in a central area of your house, such as a living room, home office, media closet, or utility room. Look around these areas to see if your equipment is there.

Is it better to have a router or modem? ›

If you opt for a separate modem and router, you'll get a more secure connection than a modem alone can offer. You'll be able to connect a variety of devices, and if the router is wireless, you can do so without cables. The router should also offer more security features than a standalone modem would.

What does my modem look like? ›

The modem typically looks like a small box with a cable leading outside to connect to your cable, fixed wireless, satellite, or fiber internet service.

Does WiFi go through router or modem? ›

Routers bring the Internet to your devices

A router connects your devices to each other and, in hard-wired connection setups, to the modem. The router connects to your modem and then to your devices (laptops, smart TVs, printers, etc.) via either an Ethernet cable or, in the case of a wireless router, WiFi signal.

Does a router provide WiFi? ›

A router is a device that provides Wi-Fi and is typically connected to a modem. It sends information from the internet to personal devices like computers, phones, and tablets.

What is the purpose of a router? ›

A router is a device that connects two or more packet-switched networks or subnetworks. It serves two primary functions: managing traffic between these networks by forwarding data packets to their intended IP addresses, and allowing multiple devices to use the same Internet connection.

How do you connect a router to a modem? ›

Connect the modem power cord to an electrical outlet, then connect the other end to the modem. Connect one end of an Ethernet cable to the back of the modem and the other end to the router's Wide Area Network (WAN) port. Connect the router power cord to an electrical outlet, then connect the other end to the router.

How much does a router cost? ›

How much does an average Wi-Fi router cost? Entry-level Wi-Fi routers average around $75, but you can find some ultra-cheap models for under $50. Mesh systems start around $200, and it's not uncommon to see high-performance gaming routers in the $400-$500 range.

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