A weak Wi-Fi signal is usually a placement problem, a crowded channel, or a router that is too far from where you actually use it. These steps are ordered from free and quick to the options that cost money, so start at the top.
Steps
Move the router to a central, open spot. Place it out in the open, not inside a cabinet, behind a TV, or on the floor. A central spot in the home, about waist to chest height, reaches the most rooms. Keep it away from thick walls, metal objects, mirrors, and large appliances.
Restart the router. Unplug the router power cable, wait 30 seconds, then plug it back in and wait a few minutes for it to fully restart. A restart clears temporary glitches and can improve speed and stability.
Use the 5 GHz band close by, and 2.4 GHz further away. If your router shows two network names, use the 5 GHz one in the same room for the fastest speed, and the 2.4 GHz one in distant rooms, because 2.4 GHz travels through walls better but is slower.
Check for router firmware updates. Sign in to the router admin page, usually at 192.168.1.1 or 192.168.0.1, and look for a Firmware Update or Software Update section. Install any update offered, then let the router restart.
Pick a less crowded channel. In the router wireless settings, change the channel for the 2.4 GHz band to 1, 6, or 11, whichever is least used near you, and set the 5 GHz band to Auto if that option exists. Save the settings and let the router restart if asked.
Move other electronics away from the router. Microwaves, cordless phones, baby monitors, and Bluetooth devices can interfere with Wi-Fi, especially on the 2.4 GHz band. Keep the router away from them where you can.
Test the speed in the weak spot. Stand where the signal is worst and run a speed test. Note the result, then compare it after each change, so you know which step actually helped.
Add an extender or a mesh node if the signal still does not reach. A Wi-Fi extender repeats the signal into a dead spot, and a mesh system adds extra nodes that work together as one network. Place an extender halfway between the router and the dead spot, not inside the dead spot itself.
Do not buy a new router before trying placement, a restart, and the right band. Most weak-signal problems are fixed by one of those three free steps.
When is a mesh system worth it?
A mesh system is worth considering if your home is large, has thick walls, or has dead spots in several rooms, and an extender has not fixed it. For a small home with one weak room, a single well-placed extender is usually enough.
About this guide
This guide covers boosting a home Wi-Fi signal with placement, settings, and add-on hardware. Router menus differ by maker, so section names on your router may vary.
Common questions
Why is my Wi-Fi fast in one room and slow in another? Distance and walls. Wi-Fi weakens as it passes through walls and floors, and the 5 GHz band weakens faster than 2.4 GHz. Moving closer to the router, or switching to the 2.4 GHz network in a distant room, usually fixes it.
Does a Wi-Fi extender halve my speed? An extender can slow the connection in the area it covers, because it receives and retransmits on the same band. A mesh system avoids most of that problem, which is why it is the better choice for a large home.
How do I know if the problem is my Wi-Fi or my internet? Test the speed next to the router, then in the weak spot. If it is fast next to the router and slow elsewhere, the Wi-Fi signal is the problem. If it is slow everywhere, the internet connection itself is the problem.
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