In this article
The right number of access points for an enterprise Wi-Fi network does not come from a rule per square metre. It depends on the area, the wall materials, device density, the type of use and the layout of the space, and only a site survey can determine it accurately. This guide shows how to approach sizing without buying too much or too little equipment.
Five factors that change the calculation
| Factor | Effect on the number of access points |
|---|---|
| Area | More square metres call for more access points, but not in a linear way |
| Walls | Concrete, brick and metal greatly reduce range |
| Density | Many users require more access points, even in small areas |
| Usage | Video calls and streaming weigh more than email |
| Layout | Open-plan spaces are easier to cover than many closed offices |
Coverage and capacity are not the same thing
The "one access point per X square metres" rule ignores walls and density. A small meeting room with 20 people on a video call can need as much capacity as an entire lightly used floor. Coverage means there is a signal; capacity means the signal can handle the load. A business wireless network has to guarantee both.
Measure before you buy: the site survey
A site survey is the only rigorous way to decide how many access points to install and where. It takes into account the area, materials, interference and actual density, and produces a precise plan. It avoids the two classic mistakes: too many access points, which is wasteful and causes interference between them, and too few, which leaves dead zones.
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An initial estimate, with caveats
As a rough starting point, a modern office usually needs one access point for each group of rooms or areas, plus extra capacity in dense zones such as meeting rooms and busy open-plan spaces. Use this only for a first idea: the real number comes from the survey.
Frequently asked questions
Will a rule such as "one per 100 m²" do?
Only as a very rough estimate. These rules ignore walls and user density, which are often the deciding factors. For a reliable number, you need to measure.
Do more access points always mean better Wi-Fi?
No. Too many poorly configured access points interfere with each other and can make performance worse. The goal is the right number, well positioned and with optimised channels.
How do I find the exact number for my space?
With a site survey, which analyses your specific space and delivers a plan with the number, model and position of each access point.
Next step: the right number for your business
DataRoad carries out the coverage survey and installs and manages the solution: business wireless network installation for companies. The wireless network relies on sound network infrastructure and structured cabling and is backed by DataRoad's managed helpdesk. Request a no-obligation proposal.
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