How many access points do I need? Wi-Fi coverage guide

How many access points do I need for Wi-Fi coverage“How many access points do I need for my space?” Is the right question to ask before installing Wi-Fi — and the honest answer is not a fixed number. It depends on several factors. This guide explains which ones are necessary and how to get the right number without buying too much or too little.

The factors that determine the number

• Area to cover: more square metres, more points — but it is not a linear rule.
• Wall materials: concrete, brick and metal greatly reduce the range.
• Device density: many users demand more points, even in small areas.
• Type of use: Video calls and streaming take up more data than email.
• Layout: Open spaces are more easily covered than many closed offices.

Why “covering by area” is misleading

It is tempting to estimate “one access point per X square metres”, but this calculation ignores walls and density. A small meeting room with 20 people on video calls may need as much capacity as an entire little-used floor. Therefore, coverage is not the same as capacity — and both matter.

The right way to know: measure

The only rigorous way to determine the number and position of the access points is a site survey. It considers the area, materials, interferences and actual density, and returns a precise plan. This avoids the classic dual error: buying too many access points (waste) or too few (dead zones).

Rules of thumb (with reservations)

As a rough starting point, a typical modern construction office usually needs one access point per set of rooms/areas, plus extra capacity in high-density zones (meeting rooms, crowded open-plan spaces). But treat this only as an initial estimate — the survey is what gives the real number.

Frequently Asked Questions

Is there a simple “1 per 100 m²” type of rule?

These rules serve only as a very rough estimate. They ignore walls and user density, which are often the deciding factor. For a reliable figure, you need to measure.

Are more access points always better?

No. Too many access points, badly configured, interfere with each other and can worsen performance. The goal is the right number, well positioned and with optimised channels.

How do I get the exact number for my space?

With a site survey, which analyses your specific space and returns a plan with the number, model and ideal position of the access points.

Want to know how many access points you need?

We carry out the coverage survey and install the right solution: Wireless network installation for businesses.

See also: Networks and structured cabling · IT support for businesses