Wi-Fi Speed Guide / Calculator

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.