Tools / Network & Throughput / PoE Budget

PoE Budget & Switch Margin Analyzer

Size PoE headroom before the install total draw, margin, and safe capacity checks.

Use this to estimate total Power-over-Ethernet demand from connected devices and verify you have enough headroom. Results are planning math real draw can vary by device class, temperature, cable loss, and load spikes.

Free tool

Switch Budget Inputs

Enter your switch budget and device mix. (Planner math not a controller simulator.)

Switch PoE budget (W)

Safety margin (%)

PoE standard (assumption)

PoE ports used (count)

Device mix

Add your device counts and typical watts. Keep it conservative (IR on, heaters, etc.) when in doubt.

Cameras (count)

Camera watts (each)

Wireless APs (count)

AP watts (each)

VoIP phones (count)

Phone watts (each)

Other devices (count)

Other watts (each)

Tip: If you're close to the line, budget higher IR/heaters, cold starts, and long cable runs can shift real draw.

Capacity & Margin Results

Total device draw

Safe budget (after margin)

Headroom

Utilization (vs switch budget)

Status

Enter values and calculate.

Note: This is planning math only. It does not model per-port limits, negotiation/class behavior, or injector efficiency (yet).

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