UniFi access point estimator
Budgetary estimate
9 to 13 access points
- Likely model
- U7 Pro Max
- Published coverage per AP
- 1,750 sq ft
- Count is driven by
- Floor area
- PoE switch ports for APs
- at least 13
High ceilings change mounting and antenna choices. Expect lift rental for installation.
Entries above 2,000,000 square feet or 20,000devices are capped; sites that large need a design review, not an estimate. Coverage per access point is Ubiquiti's published figure for the listed model. The range applies Preferred Data planning allowances for walls, racking and machinery, and assumes 25 to 40 active devices per access point. It is a budgeting aid, not a design: a site survey and predictive heat map set the final count and placement.
How many square feet does one UniFi access point cover?
According to Ubiquiti's UniFi WiFi design fundamentals, most UniFi access points cover 1,000 to 2,000 square feet (95 to 185 square meters), and Ubiquiti recommends at least one access point per 1,000 square feet for the best performance. That is a starting point for open, drywall space, not a design.
| Model | Vendor coverage | Vendor client figure | Best fit |
|---|---|---|---|
| U7 Lite | 1,250 sq ft | 200+ | Small rooms, light use |
| U7 Pro | 1,500 sq ft | 300+ | Most offices |
| U7 Pro Max | 1,750 sq ft | 500+ | Busy offices, open plant areas |
| E7 | 2,000 sq ft | 1000+ | High-density spaces |
| U7 Outdoor | 5,000 sq ft | 250+ | Yards, docks, lots |
Ubiquiti's own spec sheets list coverage per model: for example 115 square meters (1,250 square feet) for the U7 Lite, 140 square meters (1,500 square feet) for the U7 Pro, 160 square meters (1,750 square feet) for the U7 Pro Max and 185 square meters (2,000 square feet) for the E7. Those are vendor figures for open space.
The same guidance says coverage areas should overlap at about -70 dBm so devices can roam between access points without dropping calls or scanner sessions, and that exact spacing depends on the building materials.
Coverage or capacity: which one sets the access point count?
Coverage is whether a device gets a usable signal; capacity is whether the access point can serve everyone at once. Ubiquiti advises no more than 50 to 100 active client devices per radio, so a crowded training room or showroom can need more access points than its square footage suggests.
A 20,000 square foot warehouse with a dozen handheld scanners is usually a coverage problem. A 3,000 square foot conference center with 200 phones and laptops is a capacity problem. Most real buildings have both, in different rooms.
Plan capacity around what devices do, not only how many there are: video calls, point-of-sale terminals and voice-over-WiFi phones are less tolerant of congestion than a thermostat or a label printer.
Key takeaway: Count the people and devices in the busiest room at the busiest hour, not the average across the building.
How do walls, racking and ceilings change the number?
Building materials and height matter as much as floor area. Concrete block, brick, metal racking, freezers, elevator shafts and machinery absorb or reflect WiFi far more than drywall, and very high ceilings put the access point far from the devices on the floor.
If your site is a plant or distribution floor in the Piedmont Triad, see manufacturing and warehouse WiFi and PDC's article on industrial wireless networks.
- Offices with drywall and drop ceilings are the easy case; vendor coverage figures are closest to reality here.
- Manufacturing plants with block walls, metal enclosures and moving equipment usually need access points placed per area rather than per square foot, often with a separate network segment for machines.
- Warehouses with full-height racking need access points aimed down the aisles; stocked racks behave very differently from empty ones, so design for the full building.
- High-bay ceilings can call for lower mounting or directional antennas so signal lands where people work instead of in the rafters.
- Outdoor docks, yards and between-building links need outdoor-rated models such as the U7 Outdoor or a building bridge.
Does WiFi 7 and 6 GHz change how many access points I need?
WiFi 7 adds 320 MHz channels in the 6 GHz band and Multi-Link Operation, which the Wi-Fi Alliance says increases throughput and reduces latency. It does not remove the need for good placement: 6 GHz only helps devices that support it, and higher-frequency signals do not pass through walls as well as 2.4 GHz.
Current UniFi models such as the U7 Pro are tri-band (2.4, 5 and 6 GHz), while the U7 Lite is 2.4 and 5 GHz only. If most of your laptops and phones are recent, a 6 GHz-capable design is worth it; older scanners and machines will keep using 2.4 and 5 GHz.
In practice, PDC designs so that the 5 GHz band gives solid coverage everywhere people work, and treats 6 GHz as extra capacity where newer devices gather.
Why does a site survey beat a rule of thumb?
A rule of thumb like one access point per 1,000 square feet cannot see a freezer wall, a mezzanine or a steel-frame showroom. A predictive design on your floor plan, using a tool such as the free UniFi Design Center, followed by a walk-through of the building, finds those problems before cable is pulled.
- Predictive design: place access points on the floor plan with wall types and ceiling heights entered, and check coverage and overlap.
- Site walk: confirm materials, mounting points, cable paths and closet locations, and find interference sources.
- Post-install validation: walk the building with a device, confirm signal and roaming in the places that matter, and adjust.
Key takeaway: The estimator on this page gives a budgetary range, and a site survey sets the final count.
Frequently asked questions
How many access points do I need for a 10,000 square foot office?
Using Ubiquiti's guidance of at least one access point per 1,000 square feet, plan on roughly 10 as a budget figure. Open plans with drywall may need fewer; many small rooms, block walls or a large conference area may need more, which is what a site survey settles.
How many access points does a warehouse need?
It depends more on racking, ceiling height and where scanners are used than on square footage. Aisles lined with stocked metal racks usually need access points placed along the aisles, and high ceilings may need lower mounting or directional antennas. Plan from a floor plan and a site walk, not a per-square-foot number.
Can I just add more access points to fix slow WiFi?
Sometimes, but too many access points on overlapping channels can make things worse. Slow WiFi is often caused by poor placement, wrong channel widths, a congested 2.4 GHz band or a slow internet circuit. Measure first, then add hardware.
Is mesh a good idea for a business?
Wired access points are the better default. Mesh access points relay traffic wirelessly, which uses airtime and adds latency. Mesh is useful where a cable cannot reach, such as a yard light pole, but most business access points should have their own PoE cable.
Do I need WiFi 7 access points?
Not always. WiFi 7 benefits appear only with WiFi 7 devices and the 6 GHz band. For a new build or a refresh expected to last several years, current UniFi WiFi 7 models such as the U7 Pro are a sensible default; for a small room with older devices, a lower-cost model can be enough.
Who can do a WiFi site survey near me in North Carolina?
Preferred Data Corporation is based in High Point and does on-site surveys within 200 miles, which covers the Piedmont Triad, Charlotte and Raleigh-Durham. Call (336) 886-3282 or schedule a time.