WiFi Planner: How Many Mesh Nodes or Access Points Do You Need?
Plan a mesh WiFi system for a home or small office, or access points for a business. Mesh counts come from eero's and TP-Link's own spacing rules (nodes 20–30 ft apart, never more than 50 ft on wireless backhaul); access point counts come from HPE Aruba's design starting point, checked for both coverage and the number of devices. Results are planning ranges, not a site survey.
The interactive planner on this page has two modes. Mesh WiFi takes the distance from the router to the farthest room, the total area, the number of floors, the wall type and the backhaul (wireless or Ethernet), and optionally a product's stated coverage per node. Access points takes the area per floor, the number of floors, the people using WiFi at the busiest time and any fixed devices. It shows each formula with your numbers; the rules and tables below are the ones it applies.
The short answers
- Mesh: a 2,500 sq ft, two-floor home whose farthest room is 55 ft from the router needs 2–3 mesh nodes including the router unit, or 3 with brick, plaster or concrete walls.
- Mesh spacing: place nodes 20–30 ft apart, and no more than 50 ft from another node when they connect wirelessly (eero; TP-Link gives the same 50 ft limit). Put each node halfway between the router and the dead zone, not in it.
- Access points: a 10,000 sq ft office with 50 people needs 5–13 APs: floor area sets the count. A 2,000 sq ft room with 200 people needs 7–9: there, the number of devices sets it.
- Per AP: APs 30–50 ft apart each serve about 779–2,165 sq ft, and 30–40 connected devices, roughly 24–32 people (HPE Aruba).
- WiFi 7 adds 320 MHz channels (6 GHz only), 4K QAM and multi-link operation. The 6 GHz band has a slightly shorter range than 5 GHz, so a WiFi 7 system that relies on 6 GHz should not be spaced wider than a WiFi 6 one.
Mesh: nodes form a chain from the router to the farthest area that needs WiFi, 30 ft apart at the generous end and 20 ft at the cautious end; dense walls use 20 ft for both. Access points: the larger of a coverage count (APs 30–50 ft apart in a staggered layout, (√3/2)·s² each) and a capacity count (people × 2.5 devices × 50% connected, plus fixed devices, ÷ 30–40 clients per AP). No product's coverage claim is used unless you enter it.
Mesh nodes by distance from the router to the farthest room
| Farthest room | Typical walls (drywall, wood) | Dense walls (brick, plaster, concrete) |
|---|---|---|
| 25 ft | 1–2 | 2 |
| 40 ft | 2 | 2 |
| 55 ft | 2–3 | 3 |
| 70 ft | 3–4 | 4 |
| 90 ft | 3–5 | 5 |
| 120 ft | 4–6 | 6 |
Includes the router (gateway) unit. Chain at 30–20 ft spacing, or 20 ft for dense walls (eero placement guidance). Add a node on any floor that needs strong coverage and has none.
Access points needed for coverage, by floor area
| Area per floor | APs for coverage |
|---|---|
| 2,000 sq ft | 1–3 |
| 5,000 sq ft | 3–7 |
| 10,000 sq ft | 5–13 |
| 20,000 sq ft | 10–26 |
| 50,000 sq ft | 24–65 |
APs 30–50 ft apart (HPE Aruba open-office starting point), so each serves about 779–2,165 sq ft. Multiply by the number of floors.
Access points needed for capacity, by number of people
| People at the busiest time | Connected devices | APs for capacity |
|---|---|---|
| 10 | 13 | 1 |
| 25 | 32 | 1–2 |
| 50 | 63 | 2–3 |
| 100 | 125 | 4–5 |
| 200 | 250 | 7–9 |
| 500 | 625 | 16–21 |
2.5 devices per person, 50% connected at once, 30–40 clients per AP (HPE Aruba). Add cameras, scanners and other fixed devices on top. Use whichever table gives more APs.
WiFi 6, WiFi 6E and WiFi 7 compared
| WiFi 6 | WiFi 6E | WiFi 7 | |
|---|---|---|---|
| Introduced (Wi-Fi Alliance) | 2018 | Wi-Fi 6 in the 6 GHz band | 2024 |
| Bands | 2.4 and 5 GHz | 2.4, 5 and 6 GHz | 2.4, 5 and 6 GHz |
| Widest channel | 160 MHz | 160 MHz | 320 MHz (6 GHz only) |
| Top modulation | 1024 QAM | 1024 QAM | 4K QAM (about 20% faster than 1024 QAM) |
| Multi-link operation (MLO) | No | No | Yes |
| Works with older devices | Yes | Yes | Yes (backward compatible in 2.4, 5 and 6 GHz) |
From the Wi-Fi Alliance and IEEE 802.11be-2024. The Wi-Fi Alliance treats 6E as Wi-Fi 6 extended into the 6 GHz band. Speed gains need WiFi 7 devices on both ends; older phones and laptops connect at their own standard.
How many mesh nodes you need
Measure along the path WiFi has to travel, from the router to the farthest room where you need good WiFi, not the house's total area. eero's guidance is to place units 20 to 30 ft apart and no more than 50 ft apart, and to put each extra unit halfway between the router and the dead zone, so it can still relay a strong signal. That makes a chain: the router covers the first stretch, each extra node one more.
For a farthest room 55 ft away that gives 2–3 nodes. Box coverage figures ("covers up to 5,000 sq ft") describe good conditions; if you want to compare one, enter it in the planner and it is used only if it calls for more nodes than the distance rule.
Walls and floors change the answer
eero names brick, stone and metal walls, and older plaster-and-lath or chicken-wire walls, as hard for WiFi to cross, and says such homes may need more units; the planner uses 20 ft spacing for them. Floors cost more than walls: ITU-R P.1238 lists about 5 dB of loss per floor in a house at 2.4 GHz and 7 dB at 5 GHz, and 14–16 dB through an office floor. In practice most multi-storey homes do best with a node on each floor that needs strong coverage, placed roughly above or below the node on the next floor.
WiFi 7 mesh: what actually changes
WiFi 7 (IEEE 802.11be, certified by the Wi-Fi Alliance from 2024) brings 320 MHz channels in the 6 GHz band (twice the width of WiFi 6), 4K QAM (about 20% higher rates than 1024 QAM) and multi-link operation, which balances traffic across links in different bands for more throughput and reliability.
Two things matter for planning. First, the 6 GHz band has a slightly shorter range than 5 GHz and is weakened more by obstacles (HPE Aruba), so do not space WiFi 7 nodes further apart than the rules above. Second, the gains need WiFi 7 devices: a WiFi 5 or WiFi 6 laptop connects at its own standard. A WiFi 7 system is worth it when you have, or will soon have, WiFi 7 phones and laptops, or a multi-gig internet connection. Whatever the generation, wired (Ethernet) backhaul between nodes removes the node-to-node wireless hop.
Wired or wireless backhaul
Backhaul is the link between mesh nodes. Wireless backhaul shares airtime with your devices; eero notes wireless links are typically slower and more prone to interference than wired ones. With Ethernet between nodes, both eero and TP-Link say spacing becomes more flexible, because nodes no longer need to hear each other. If you can run cable to even one node, put it at the far end of the chain.
Access points for a business: coverage and capacity
HPE Aruba's design guidance is to plan for users and devices, not just coverage. The planner works out both and uses the larger. Coverage: APs 30–50 ft (10–15 m) apart in an open office. Capacity: 30–40 clients per AP, assuming each person carries 2.5 WiFi devices and half are connected at once.
In a normal office the floor area usually sets the count; in meeting rooms, classrooms, warehouses with handheld scanners and event spaces the device count does. Aruba also advises a wireless design survey for every installation; treat this estimate as the starting point for one.
Where to put access points and nodes
- Mesh nodes: halfway between the router and the dead zone; about halfway up the wall or on a shelf, not on the floor or in a cabinet; line of sight between nodes where possible (eero). - Ceiling APs: mounted flat, facing down, typically 12–25 ft high; not above a drop ceiling; away from columns, beams and metal furniture (HPE Aruba). - Signal target: Cisco recommends at least −67 dBm everywhere for voice (WiFi calling), with two APs heard at that level; Aruba sizes WiFi 6 and 6E cells for −55 to −65 dBm at the edge. - Extra APs where people gather: conference rooms, break rooms, atriums.
Power: PoE and UPS for access points
Business APs are powered over Ethernet (PoE) from the switch. Check each AP model's datasheet for its PoE class and maximum draw, add them up against the switch's PoE budget, and put the switch on a UPS so WiFi survives a short outage. The CCTV planner has a PoE budget step that works for APs too, and the UPS calculator sizes the battery backup.
Mesh system or access points?
A mesh system is a set of matched units managed from one app, designed for homes and small offices, and it works without running cable (better with it). Access points are business devices, powered by PoE, mounted on ceilings and managed from a controller or cloud dashboard; they suit offices, shops, schools and warehouses where cable can be run and many people connect at once. Both use the same WiFi standards; the difference is management, mounting, power and how many devices they are designed to carry.
Shop for this plan
Frequently asked questions
How many mesh nodes do I need?
Measure from the router to the farthest room that needs WiFi and allow one node per 20–30 ft, including the router. A farthest room 55 ft away needs 2–3 nodes with ordinary walls, 3 with brick, plaster or concrete. Consider one more on any floor that needs strong WiFi and has no node.
How far apart should mesh nodes be?
20 to 30 ft apart, and no more than 50 ft from another node when they connect wirelessly (eero; TP-Link Deco also says no more than 50 ft). With Ethernet backhaul they can be further apart. Place each node halfway between the router and the dead zone.
How many access points do I need per square foot?
With APs 30–50 ft apart (HPE Aruba's open-office starting point), each covers about 779–2,165 sq ft, so a 10,000 sq ft floor needs 5–13 APs for coverage. Check capacity too: many people in a small space need more.
How many users can one access point handle?
HPE Aruba plans for 30–40 connected devices per AP. With 2.5 devices per person and half of them connected at once, that is about 24–32 people per AP. 200 people need 7–9 APs for capacity alone.
Is a WiFi 7 mesh system worth it?
It is if you have WiFi 7 phones or laptops, or multi-gig internet: WiFi 7 adds 320 MHz channels in 6 GHz, 4K QAM and multi-link operation. Older devices still work but connect at their own standard. Wired backhaul between nodes helps any generation.
Does WiFi 7 cover a bigger area than WiFi 6?
No standard promises more range. WiFi 7's widest channels are in the 6 GHz band, which has a slightly shorter range than 5 GHz and is weakened more by walls (HPE Aruba), so plan the same or closer spacing for a WiFi 7 system.
What is the difference between WiFi 6 and WiFi 6E?
WiFi 6E is WiFi 6 extended into the 6 GHz band; the Wi-Fi Alliance says Wi-Fi 6 introduced Wi-Fi in 6 GHz in addition to 2.4 and 5 GHz. Both use 160 MHz maximum channels and 1024 QAM; WiFi 7 adds 320 MHz channels and multi-link operation.
What WiFi signal strength should I aim for?
Cisco recommends at least −67 dBm where voice (WiFi calling) is used, with two access points heard at that level. HPE Aruba sizes WiFi 6 and 6E cells for −55 to −65 dBm at the cell edge, depending on capacity needs.
Mesh or access points for a small office?
Mesh suits a small office that cannot run cable and has a modest number of users. Ceiling-mounted PoE access points suit offices that can run Ethernet and have many people or devices connecting at once. The planner calculates both.
Sources
- eero (Amazon): Where should I place my eeros? (accessed 2026-10-30)
- eero (Amazon): How much distance should there be between eeros? (accessed 2026-10-30)
- TP-Link: TP-Link Deco range: coverage, placement, and tips (FAQ 2716) (accessed 2026-10-30)
- HPE Aruba Networking: Campus design: radio frequency design (Validated Solution Guide) (accessed 2026-10-29)
- Cisco: Understand site survey guidelines for WLAN deployment (Document 116057) (accessed 2026-10-29)
- ITU-R: Recommendation ITU-R P.1238-13: indoor propagation data (Table 5, floor penetration loss) (accessed 2026-10-29)
- IEEE Standards Association: IEEE 802.11be-2024: Enhancements for Extremely High Throughput (Wi-Fi 7) (accessed 2026-10-30)
- Wi-Fi Alliance: Wi-Fi CERTIFIED 7 (accessed 2026-10-30)
- Wi-Fi Alliance: Wi-Fi CERTIFIED 6 (accessed 2026-10-30)
Related tools and guides
Updated 2026-10-30.