Enter your plan and active devices.
Network & guides
Wi-Fi Speed Guide / Calculator
See the share of Wi-Fi each active device is likely to get.
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How much Wi-Fi speed does each device get?
Wi-Fi is shared. Every active device takes a slice of the router's airtime, and wireless overhead means you never get the full plan speed. This calculator estimates the share per device.
The formula
Speed per device = plan speed × efficiency ÷ active devices. Efficiency of about 70% is a reasonable default for a healthy connection; walls, distance and interference can push it lower.
Example
A 200 Mbps plan at 70% efficiency gives 140 Mbps of usable Wi-Fi. Shared between five active devices, that is roughly 28 Mbps each.
Practical fixes
- Place the router high and central, away from thick walls and appliances.
- Use 5 GHz or 6 GHz for nearby devices and 2.4 GHz for range.
- Move fixed, demanding devices such as consoles and desktops onto Ethernet.
- Add a mesh node or access point when one router cannot cover the home.
FAQ
Frequently asked questions about the Wi-Fi Speed Guide / Calculator
Why is my Wi-Fi slower than my plan?
Wireless overhead, distance, walls and interference reduce speed, and every active device shares what is left.
What Wi-Fi efficiency should I use?
Around 70% is a sensible starting point. Use 40–50% for a weak signal and 80% or higher close to the router.
Does 5 GHz give faster Wi-Fi than 2.4 GHz?
Usually yes at short range, but 2.4 GHz travels further through walls.
KEEP GOING
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Use this toolResults are estimates for planning. Last reviewed 22 September 2026.