Router Speed Checker

Find out whether your router is slowing your broadband, how to compare Wi-Fi with Ethernet and what to check before replacing your ISP router.

Router performance guide

Is your router limiting your broadband speed?

Your broadband package might be fast, but your router still has to deliver that speed to phones, laptops, TVs, consoles and smart devices around the home.

A router speed check means comparing broadband speed at the router with Wi‑Fi performance in real rooms. That helps you spot whether the issue is your line, Wi‑Fi coverage, router age or local interference.

Run a speed testBest router position

Can my router slow my internet?

Yes. Your broadband provider delivers a connection to your home, but the router is responsible for sharing it across your devices. If the router is old, badly positioned, overloaded or using older Wi‑Fi technology, your real-world speed can be far lower than the package you pay for.

This is especially common after upgrading to full fibre. A line may be capable of hundreds of Mbps or even gigabit speeds, while an older router, weak Wi‑Fi signal or poor room coverage prevents devices from reaching those speeds.

The simplest way to check is to compare a wired Ethernet speed test near the router with Wi‑Fi results in several rooms. A big gap between wired and wireless results usually points to a home network issue rather than a broadband line issue.

Router speed vs broadband speed

Broadband speed is the connection coming into your home. Router speed is how well your router distributes that connection. Wi‑Fi versions, Ethernet ports, antennas, processor power and router placement can all affect results.

Router / Wi‑Fi typePractical expectationWhat to watch for
Older Wi‑Fi 4 routerOften below 100 Mbps in real useMay bottleneck modern fibre packages.
Wi‑Fi 5 routerCan be good for many homesMay struggle with gigabit packages and many devices.
Wi‑Fi 6 routerStrong modern baselineGood for busy homes when placement is sensible.
Wi‑Fi 6E / Wi‑Fi 7 routerHigher wireless headroomBest with compatible devices and good 6 GHz coverage.
Gigabit EthernetUsually the most stable test methodBest way to separate broadband speed from Wi‑Fi.

Signs your router is the bottleneck

Ethernet is fast, Wi‑Fi is slow

This usually means the broadband line is fine and the wireless network needs attention.

One room is much slower

Distance, walls, furniture and interference can create Wi‑Fi dead zones.

Speeds drop upstairs

Floors and ceilings can weaken signal, especially on faster 5 GHz and 6 GHz bands.

Lag when others are online

The router may be struggling with congestion, bufferbloat or too many active devices.

How to run a router speed check

  1. Run a Wi‑Fi speed test in the problem room. Note download speed, upload speed, ping and jitter.
  2. Move next to the router and test again. If the result improves sharply, coverage is likely the issue.
  3. Test with Ethernet if possible. This gives the cleanest view of the broadband line.
  4. Compare results at different times. Evening drops may suggest congestion or busy household usage.
  5. Check router placement. Avoid cupboards, floors, thick walls, TVs, metal objects and microwaves.
Start speed testDownload speed checkerHome network guides

How to improve router performance

Best router position

Place your router where signal can reach the home more evenly.

Read guide

Mesh Wi‑Fi

Use multiple nodes to improve coverage in larger homes.

Read guide

Wi‑Fi extenders

Understand when extenders help and when they slow things down.

Read guide

Walls blocking Wi‑Fi

See how brick, concrete and metal affect wireless signal.

Read guide

One room slow

Troubleshoot dead zones and weak signal in a single room.

Read guide

Upstairs slow

Fix weak Wi‑Fi on another floor.

Read guide

Do I need a new router?

You may not need a new router immediately. If the router is badly placed, moving it can improve speeds for free. If one room is weak, mesh Wi‑Fi or an Ethernet run may be better than replacing the whole router. If your wired speed is also poor, the issue may be with the broadband connection, package or provider rather than the router.

A replacement is more likely to help if your current router is several years old, lacks gigabit Ethernet ports, struggles with many devices, frequently crashes, has weak Wi‑Fi coverage or cannot make good use of your full fibre package.

Router speed checker FAQs

Can my router slow my internet?

Yes. Old hardware, weak Wi‑Fi, poor placement, congestion and limited Ethernet ports can all reduce the speed you see on devices.

How do I know if Wi‑Fi or broadband is the problem?

Compare Ethernet and Wi‑Fi tests. If Ethernet is fast but Wi‑Fi is slow, the problem is probably wireless coverage or router performance.

Can an old router handle gigabit broadband?

Some older routers can route gigabit over Ethernet but struggle to deliver it over Wi‑Fi. Compatibility, ports and Wi‑Fi version all matter.

Is Ethernet better for gaming?

Yes. Ethernet is usually more stable and gives lower jitter than Wi‑Fi, which makes it better for gaming and video calls.