Should You Turn Wi-Fi Off at Night?
HEALTH • SLEEP • ELECTRICITY • ROUTER UPDATES • WHAT STOPS WORKING
You usually do not need to turn Wi-Fi off at night.
There is no health requirement to switch a normal, compliant home Wi-Fi network off while you sleep. UKHSA says there is no consistent evidence that exposure to Wi-Fi radio signals adversely affects the health of the general population, while ICNIRP says research has not shown conclusive evidence of adverse health effects from Wi-Fi exposure below its protection limits.
There can still be practical reasons to schedule Wi-Fi or pause devices overnight: reducing late-night distractions, setting screen-time boundaries or saving a modest amount of electricity. In most homes, that is better done with targeted controls rather than unplugging the entire router.
This article provides general information rather than personal medical advice. If symptoms or health concerns are persistent or worrying, speak to an appropriate healthcare professional.
Is it safe to leave Wi-Fi on all night?
Wi-Fi uses radiofrequency electromagnetic fields in the non-ionising part of the spectrum. UKHSA’s current guidance says Wi-Fi devices operate at very low power and that measured exposures are small compared with ICNIRP limits. UKHSA says it sees no reason why Wi-Fi should not continue to be used and does not recommend extra communal or individual action to reduce exposure.
ICNIRP likewise says a large body of research on high-frequency fields, including Wi-Fi, has not shown conclusive evidence of adverse health effects at exposure levels below the relevant thermal threshold.
For health reasons alone, there is no official recommendation to switch your home router off every night. If your concern is specifically cancer risk, see our separate evidence review on whether Wi-Fi can cause cancer.
Can turning Wi-Fi off help you sleep?
It can help indirectly if switching it off changes what you do before bed. The NHS recommends avoiding phones, tablets and computers for around an hour before bedtime as part of a calmer sleep routine. That is about screen use and behaviour rather than the Wi-Fi signal itself.
Control the devices
Use Do Not Disturb, bedtime mode, app limits or a router profile that pauses selected devices at a set time.
Schedule Wi-Fi only if needed
A Wi-Fi schedule can be useful when everyone in the home wants the wireless network unavailable overnight and nothing essential depends on it.
If your goal is simply fewer notifications or less scrolling, switching off the whole household network is usually a much bigger intervention than necessary.
Does turning Wi-Fi off save electricity?
Yes, but the amount depends on exactly what you switch off. A router, mesh unit or access point uses electricity while powered, so turning unused equipment off reduces consumption during those hours.
Disabling only the Wi-Fi radios normally saves less than powering down the complete router because the router’s processor, Ethernet ports and internet connection may continue working. If energy saving is the goal, check the actual power rating of your equipment rather than relying on a generic estimate.
Do not switch off equipment solely to save a small amount of power if it supports something important overnight. Digital phone service, alarms, cameras, heating controls, backups or other connected devices may depend on the connection.
What can stop working if you turn the router off?
Turning off Wi-Fi is not always the same as turning off the router. If you power down the complete network, you may also stop services that use the broadband connection.
- ×Digital landline calls: many UK digital landlines work through the broadband router. Ofcom says these services depend on the broadband connection and mains power.
- ×Security and care devices: cameras, alarms, smart locks, telecare and medical-alert equipment may lose connectivity or remote notifications.
- ×Smart-home routines: heating, lighting, speakers and other connected products may stop responding remotely.
- ×Backups and downloads: phones, computers and consoles often use quieter overnight periods for cloud backups, software updates and downloads.
- ×Wi-Fi Calling: a phone may fall back to the mobile network, which matters if indoor mobile reception is poor.
Is it bad to turn a router off every night?
It does not normally damage a modern router simply because it is switched off correctly, but nightly shutdowns can be inconvenient. Ofcom’s current broadband troubleshooting advice specifically recommends keeping routers, mesh devices and full-fibre ONTs switched on so they can receive automatic updates.
A reboot can still be useful when troubleshooting a temporary fault. Ofcom recommends restarting broadband equipment as one possible fix for a problem, but that is different from assuming a nightly restart will permanently make the connection faster.
Do not confuse a reboot with a speed upgrade. Restarting may clear a temporary glitch, but it does not increase the speed of your broadband package.
Does switching Wi-Fi off improve security?
A network that is switched off cannot be accessed during that period, but nightly shutdowns are not a substitute for proper security while the network is actually running.
Keep router firmware current, use a strong administrator password, use WPA2 or WPA3 where supported, and separate less-trusted devices onto a guest network if your equipment allows it. Those measures protect the network when you are awake and using it as well as overnight.
What is the best way to turn Wi-Fi off at night?
Use the least disruptive option that solves the actual problem.
Pause selected devices
Use router profiles, parental controls, device schedules, Do Not Disturb or bedtime mode. This keeps essential household services online.
Use a Wi-Fi schedule
If your router or mesh system supports it, schedule the wireless radios rather than unplugging the complete broadband system.
Restart only when needed
Reboot the router when diagnosing a fault rather than making it an automatic nightly routine.
Check what can safely go off
Non-essential mesh nodes or access points may be better candidates than the main router if other services depend on it.
Router menus vary, but useful settings are often labelled Wi-Fi schedule, wireless schedule, bedtime, access control, parental controls or pause devices.
Leave Wi-Fi on overnight unless switching it off solves a specific problem. There is no health requirement to power it down. For sleep and screen-time rules, targeted device controls are usually better; for the whole network, check first that phones, alarms, cameras and automatic updates will not be affected.
Wi-Fi at night FAQs
Should you turn Wi-Fi off at night?
Usually no. There is no health requirement to switch a compliant home Wi-Fi network off overnight. You may still choose to schedule Wi-Fi or pause devices for sleep routines, screen-time limits or modest energy savings.
Is it safe to leave Wi-Fi on all night?
Current UKHSA and ICNIRP guidance does not identify a health reason for people to switch normal compliant Wi-Fi equipment off overnight. UKHSA says there is no consistent evidence that Wi-Fi exposure adversely affects the health of the general population.
Does turning Wi-Fi off at night help sleep?
It can help indirectly if it reduces late-night phone use, gaming, streaming or notifications. The better-targeted approach is often bedtime mode, Do Not Disturb or pausing selected devices rather than switching off the entire network.
Does turning Wi-Fi off at night save electricity?
Yes, but the saving is usually modest and depends on the router, mesh units and other equipment. Turning off only the Wi-Fi radios generally saves less than powering down the whole network.
Should I turn off the whole router or only Wi-Fi?
Disabling or scheduling Wi-Fi is usually less disruptive. Turning off the whole router can interrupt digital landline service, security devices, smart-home equipment, overnight backups and automatic router updates.
Is it bad to turn a router off every night?
A normal shutdown does not usually damage a modern router, but Ofcom advises keeping routers and related broadband equipment switched on so they can receive automatic updates. Nightly shutdowns can also interrupt services that depend on the connection.
Sources and further information
- UK Health Security Agency: Wi-Fi radio waves and health — current UK public-health position on Wi-Fi exposure.
- ICNIRP: Wi-Fi — scientific overview and international radiofrequency exposure guidance.
- NHS: sleep better — bedtime-routine advice, including reducing phone, tablet and computer use before sleep.
- Ofcom: broadband and Wi-Fi troubleshooting — current advice on router reboots and keeping broadband equipment powered for automatic updates.
- Ofcom: digital landlines — explains that many modern landline services operate through the broadband connection and require powered equipment.