2.4GHz vs 5GHz (and 6GHz): which Wi-Fi band should you use?
Use 5GHz when you’re close to the router for the fastest speeds, and 2.4GHz when you’re far away or through several walls, because it reaches further. 6GHz (Wi-Fi 6E/7) is faster still but shorter range. Most modern routers handle this automatically under one network name, so you rarely need to choose manually.
Last updated: · Written by The NetSorted team
The two main Wi-Fi bands trade speed against range. Knowing which is which helps you get the best Wi-Fi in each room.
The simple rule
- 5GHz — faster, but shorter range and weaker through walls. Best up close to the router.
- 2.4GHz — slower, but travels further and through more walls. Best far away.
- 6GHz (Wi-Fi 6E/7) — fastest and least congested, but the shortest range. Needs compatible kit.
Most routers choose for you
Modern routers broadcast all bands under a single network name and steer each device to the best one automatically (“band steering”). Usually you don’t need to do anything.
If your router splits the bands into separate names, connect to the 5GHz one near the router and the 2.4GHz one in far rooms.
If far rooms are still weak
Choosing a band can only do so much against distance and walls. If a room is far from the router, the real fix is to extend coverage — see better Wi-Fi in every room or run the fix slow Wi-Fi tool.
Frequently asked questions
Should I use 2.4GHz or 5GHz?
Use 5GHz when you’re near the router for the fastest speeds, and 2.4GHz when you’re further away or through walls, because it travels further. Most routers switch automatically under one network name.
Why is 2.4GHz sometimes slower but more reliable far away?
2.4GHz signals travel further and through walls better than 5GHz, so they reach distant rooms — but they’re slower and more prone to interference from other networks and gadgets.
What is 6GHz Wi-Fi?
6GHz is a newer band (Wi-Fi 6E and Wi-Fi 7) that’s very fast and less congested, but has shorter range. You need a compatible router and device to use it.
Published and last updated — see dates above.