WiFi CalculatorHow many access points do you need?
A free WiFi calculator that sizes access points and bandwidth for your space in seconds — no signup. Recommendations follow IEEE 802.11 capacity planning and industry best practice.
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Three minutes: the calculator result, the same office on a floor plan, and why the count changes once walls are detected. Try the planner without signing up.
What this WiFi calculator works out
A WiFi calculator turns the details of a space — floor area, peak headcount, the devices people carry and what they run — into the two numbers that decide a wireless design: how many access points to install, and how much internet bandwidth to put behind them. Guessing either one is what leaves a network crawling in a full room, or overspent in an empty one.
This one sizes both at once. Coverage sets a floor — roughly one AP per 2,500 sq ft in open offices, closer to one per 1,000–1,500 sq ft in dense venues like conference centers and restaurants — while capacity caps each AP at about 25 concurrent devices before performance drops. It applies a 70% concurrency factor and 30% peak overhead, following IEEE 802.11 capacity-planning practice, then reports whichever limit bites first. Enter your numbers above to see the result in seconds, with no signup.
Need a different angle? Size internet capacity application by application with the bandwidth calculator, or plan around co-channel interference with the channel planning calculator.
Common questions
What does this WiFi calculator work out?
Two numbers: how many access points your space needs, and how much internet bandwidth has to sit behind them. It sizes both from your floor area, your peak user count, the devices those users bring, and what they actually do on the network — then reports whichever AP count is higher, coverage-driven or capacity-driven.
How many access points do I need?
There is no single answer per square foot, because two limits apply at once. Coverage sets a floor: roughly one AP per 2,500 sq ft in open offices, but closer to one per 1,000–1,500 sq ft in dense spaces like conference centers and restaurants. Capacity sets another: about 25 concurrent devices per AP before performance degrades. Whichever limit bites first decides the count, and this calculator computes both.
How much bandwidth does each user need?
Far less than people assume, because not everyone transmits at once. Web browsing and email sit under 0.5 Mbps per user; video conferencing runs about 1.5 Mbps; streaming and large file transfers are the heavy items at 3–5 Mbps. Applying a 70% concurrency factor and a 30% peak overhead — which the calculator does — gets you closer to a real-world figure than adding raw per-application numbers together.
Is this WiFi calculator free?
Yes. No account, no email, and no limit on how many times you run it. Results appear in the browser as soon as you fill in the required fields.
Does it account for walls and building materials?
Only indirectly, through the building-type multiplier — a warehouse and a hospital get different coverage assumptions. It does not model your specific floor plan. Construction matters a lot at 5 and 6 GHz, so see our reference on Wi-Fi signal loss through walls if your building has heavy interior partitions, and use predictive planning software for a real coverage map.
Planning a specific building? See how much signal each wall material costs you, or size coverage area directly with the coverage and range estimator.
Important Disclaimer
For Educational and Estimation Purposes Only: The Wi-Fi Capacity Calculator is provided as a free educational tool to help with preliminary planning estimates. Results should not be used as the sole basis for professional network deployments.
Professional Consultation Required: For production networks, always consult qualified professionals and conduct proper site surveys. Actual results may vary significantly based on environmental factors, building materials, interference, and specific requirements.
Methodology: Results are based on industry-standard guidance and the sources referenced below, simplified for general use. Real-world deployments require detailed analysis of specific conditions.
- Calculations assume 70% device concurrency based on industry studies
- Bandwidth estimates include 30% overhead for peak usage scenarios
- Building-specific multipliers based on typical usage patterns and RF challenges
- Professional site surveys required for production deployments
- Results may vary significantly based on building materials and interference
Sources & References:
- IEEE 802.11-2020 Standard for Wireless LAN Medium Access Control and Physical Layer Specifications
- Cisco Meraki: High Density Wi-Fi Deployments Best Practices (2024)
- Ekahau: Wi-Fi Capacity Requirements for Device Density (2022)
- Wi-Fi Alliance: Wi-Fi 6 and Wi-Fi 6E Planning Guidelines
- Industry standard: 25-30 concurrent devices per access point for optimal performance
- Coverage areas based on typical RF propagation in various building types
Limitation of Liability: WiFi Weave makes no warranties regarding the accuracy or completeness of these calculations. Users assume all responsibility for decisions based on these estimates.