Chapter 9: Design Calculators
Five real-time interactive calculators for wireless security system design, sizing, and performance estimation
The following calculators provide real-time, interactive assistance for the most common wireless security design calculations. All results update instantly as you adjust inputs. These tools are intended as design aids — always validate results against vendor-specific data sheets and conduct a physical site survey before finalizing AP placement and equipment quantities.
Calculator 1 — AP Count & Coverage Estimator
Estimate the number of APs required based on floor area, environment, and client density
Real-Time Results
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APs by Coverage
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APs by Client Density
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Recommended AP Count
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Spare APs (5%)
Enter values above to see results.
Calculator 2 — PoE Power Budget Calculator
Calculate total PoE power consumption and verify switch power budget
Power Budget Analysis
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Total PoE Load (W)
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Total Budget (W)
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Utilization (%)
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Headroom (W)
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Calculator 3 — RADIUS Authentication Capacity Planner
Size your RADIUS infrastructure based on authentication load, EAP method, and concurrency
RADIUS Sizing Results
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Peak Auth/sec
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RADIUS Servers Needed
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Server Utilization
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Re-auth Load/sec
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Calculator 4 — Wireless Throughput & Bandwidth Estimator
Estimate per-client and aggregate throughput based on Wi-Fi standard, MIMO, and channel width
60%
5%
Throughput Estimates
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Max PHY Rate (Mbps)
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Effective Throughput (Mbps)
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Per-Client Throughput (Mbps)
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After Security Overhead (Mbps)
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Calculator 5 — PKI Certificate Lifecycle & Renewal Planner
Plan certificate issuance, renewal windows, and PKI infrastructure load for EAP-TLS deployments
90%
PKI Planning Results
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Renewals/Day (steady state)
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Peak Renewals/Day (window)
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Manual Renewals/Day
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Total Issuances/Year
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