Most people share internet from a phone, and for most situations that is more practical. But there are a few situations where a laptop is the better choice — and the feature is already there with nothing to install.
When this is useful
Sharing from a laptop makes most sense in four situations:
- The laptop is connected by LAN cable, while phones and tablets need to use the same internet. This is the most common use.
- The Wi-Fi there limits one device per account, as some hotels and guesthouses do.
- The laptop uses its own USB modem or SIM, and other devices need to share it.
- Other devices can't open the network login page — televisions and games consoles often struggle with those pages, while laptops don't.
Outside those four, a phone hotspot is usually more practical. The comparison and its common problems are in the guide to phone hotspots that won't connect.
Windows
Windows provides this built in, and setup takes under a minute.
Open hotspot settings
Settings › Network & internet › Mobile hotspot. The quick route: open the quick settings panel in the taskbar, where the icon lives.
Choose the internet source
Under "Share my Internet connection from", pick the adapter actually connected to the internet — Ethernet if by cable, Wi-Fi if riding on another network.
Change the name and password
Press Edit. Use letters, numbers, and hyphens only — names containing emoji often don't appear on some devices.
Choose the 2.4 GHz band
This is the most decisive step. If a band option is available, choose 2.4 GHz so older devices can still see it. The difference between bands is in the guide to Wi-Fi frequency bands.
Turn the switch on
The list of connected devices appears on the same page, along with the eight-device limit.
macOS
On macOS it's called Internet Sharing, under System Settings › General › Sharing.
- Open Internet Sharing, then pick the source under "Share your connection from".
- Tick Wi-Fi in the "To computers using" list.
- Press Wi-Fi Options to set the network name and password. Choose WPA2 or WPA3; don't leave it without a password.
- Turn on the Internet Sharing switch and confirm.
One limitation worth knowing: macOS can't share Wi-Fi over Wi-Fi. The source must differ from the outgoing path — internet arriving over Ethernet or a USB adapter, then shared over Wi-Fi. To share Wi-Fi to Wi-Fi, use Windows or a phone.
If the hotspot misbehaves
| Symptom | Cause and action |
|---|---|
| Not visible on other devices | Change the band to 2.4 GHz |
| Hotspot option greyed out | Adapter doesn't support it; update the driver or use a USB adapter |
| Connects but no internet | Wrong source connection selected in the menu |
| Switches off after a few minutes | Sleep mode; change the laptop's power settings |
| Speed drops sharply | Normal when sharing Wi-Fi over Wi-Fi |
The second row deserves explaining. If the option can't be switched on, the adapter driver usually doesn't support this mode. Install the driver from your laptop maker's site — not through Windows' automatic search, which often installs a generic version without the feature. Considerations for an add-on adapter are in the guide to choosing a USB Wi-Fi adapter.
Limits worth knowing
This feature is designed for temporary use, not as a router replacement. The differences are real:
- Speed drops when sharing Wi-Fi over Wi-Fi. One radio alternates between receiving and transmitting, so capacity is cut roughly in half — the same issue as a repeater, discussed in the guide to mesh, repeaters, and access points.
- Its range is short. Laptop antennas are designed to receive, not to broadcast across a room.
- The battery drains quickly. Keep it plugged in if the hotspot needs to last.
- It stops when the laptop sleeps. Adjust power settings so it stays awake while in use.
- An eight-device limit on Windows.
On security
A few things worth attention, especially when using this in public:
- Always set a password. A hotspot without one can be used by anyone in range, and their traffic leaves through a connection in your name — the guide to Wi-Fi owner responsibility.
- Don't use a name resembling the venue's official network. A similar name can cause others to connect without realising.
- Turn it off when finished. Windows sometimes re-enables it after a system update.
- Note that connected devices share a network with your laptop. Turn off file sharing while the hotspot is on if unfamiliar devices are joining.
A long password still matters more than a complicated one, and the reasoning is in the guide to strong Wi-Fi passwords.
If the need is permanent
If you find yourself switching on the laptop hotspot every day, that's a sign the need isn't really a temporary hotspot.
For a room that needs permanent Wi-Fi, one inexpensive access point gives far better results with wider coverage and without depending on a laptop staying awake — the guide to setting up two routers on one network. For locations with no wired connection at all, the options are covered in the guide to choosing a MiFi or 4G router.
Frequently asked questions
Can a laptop share Wi-Fi while using Wi-Fi?
On most Windows laptops from recent years, yes, because the adapter can work in two roles at once. Speed drops because one radio alternates between them, and on older adapters the feature is sometimes unavailable entirely.
Why can't other devices see my laptop's hotspot?
Most often the frequency band. Windows sometimes broadcasts on 5 GHz while the receiving device only supports 2.4 GHz. Change the band option in hotspot settings, and most cases resolve.
How many devices can connect?
Windows caps its built-in feature at eight devices. That's usually enough for temporary use, but it isn't a substitute for a router in a room full of people.
Does the hotspot keep running when the laptop is closed?
No. Once the laptop sleeps, the hotspot stops and every device disconnects. Change the power settings to keep the laptop awake if the hotspot needs to last.
